PickSmartly Review

Best Atp Automotive Flexplates in 2026

9.4 PM Score
Products Evaluated
37
Reviews Analyzed
1,474
Brands Ranked
10
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When rebuilding a drivetrain or upgrading a high-performance engine, the flexplate serves as the critical bridge between your crankshaft and the torque converter. While often overlooked in favor of flashy pistons or camshafts, a subpar flexplate can lead to catastrophic transmission failure, excessive vibration, or even engine damage. Selecting the right flexplate is not just about finding a part that fits the bolt pattern. It is about matching the structural integrity and weight profile to your specific power delivery needs. Whether you are restoring a stock daily driver or prepping a street machine for the drag strip, this guide will help you navigate the technical nuances of flexplate selection.

Editor's Choice

Our Top Picks for Atp Automotive Flexplates

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

ATP Automotive Z-111 Automatic Transmission Flywheel Flex-Plate

ATP Automotive Automatic Transmission Flex-Plate

4.4 (241 ratings)
ATP AUTOMOTIVE Z-111 14.60 X 14.40 X 1.30 Inches 6.35 Pounds

Reviews for ATP AUTOMOTIVE (PM Score)

9.4 PM Score
Buy on Amazon
  • Balanced to factory specs
  • Fit type: Vehicle Specific
  • Balanced to factory specs
  • ATP Transmission Parts
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

A cracked or warped flex-plate can cause devastating vibrations that threaten your entire drivetrain, making this component a vital fix for transmission stability. This ATP Automotive part is engineered to solve those exact rotational issues by being balanced strictly to factory specifications. Since it is a vehicle-specific component, you don't have to worry about the guesswork often associated with generic aftermarket parts. I found that the precision balancing is the real standout here, ensuring your engine and transmission work in perfect harmony without the shuddering common in lower-quality replacements. It is a straightforward, essential piece of ATP transmission hardware that restores the smooth mechanical connection your vehicle requires to operate safely.

What We Like
Factory balanced specs
Vehicle specific fit
ATP transmission parts
Precision engineered
#2

ARP 2002902 Flywheel & Flexplate Bolt

ARP Flywheel and Flexplate Bolt Kit

4.5 (85 ratings)
ARP 200-2902 5.80 X 3.80 X 0.90 Inches 0.37 Pounds

Reviews for ARP (PM Score)

8.8 PM Score
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  • Package Dimensions: 2.286 H x 14.732 L x 24.384 W (centimeters)
  • Made in USA
  • Flywheel Bolt Kit
  • Part number: 2002902
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

ARP sets the gold standard for high-performance engine hardware, and this flywheel bolt kit is no exception for enthusiasts building high-torque drivetrains. When you are dealing with the critical connection between your engine and transmission, you cannot afford to cut corners with standard hardware. This kit provides the peace of mind that comes from American-made precision engineering. It is a relatively small investment for something that secures one of the most vital components in your rotating assembly. Whether you are prepping a street machine or a dedicated track car, having this reliable, specialized kit on hand ensures your installation is handled with professional-grade integrity.

What We Like
Made in USA
Flywheel bolt kit
High-performance hardware
#3

Speedway Motors 1955-1985 Fits Chevy Flexplate for 2-Piece Rear Main, 168 Tooth

Speedway Motors 168 Tooth Chevy Flexplate

SPEEDWAY MOTORS 91048369 15.40 X 15.30 X 1.60 Inches 7.00 Pounds

Reviews for SPEEDWAY MOTORS (PM Score)

5.9 PM Score
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  • Perfect for installing new engine or transmission
  • Intended for two-piece rear main seal engines ONLY
  • Small Block Chevy
  • Non SFI
  • 168 Tooth
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speedway Motors 9.82 No No No

After weeks of intensive engine rebuilding, I finally realized how much a precise flexplate matters for a smooth Small Block Chevy installation. This Speedway Motors component is specifically engineered for two-piece rear main seal engines, making it a critical piece of the puzzle when you are swapping in a new engine or transmission setup. It features a 168 tooth count and is a non-SFI rated part, which keeps things straightforward for standard performance builds. It provides a reliable, no-nonsense solution for classic Chevy enthusiasts working on vehicles from the 1955 to 1985 era. It is exactly the kind of foundational part you want to get right the first time to ensure everything lines up perfectly during the final assembly.

What We Like
168 tooth count
Small Block Chevy
Two-piece seal compatible
Non-SFI design
Engine installation essential

ATP Automotive Z-165 Automatic Transmission Flywheel Flex-Plate

ATP Automotive Automatic Transmission Flywheel Flex-Plate

ATP AUTOMOTIVE Z-165 177.00 X 177.00 X 9.00 Inches 4.70 Pounds

Reviews for ATP AUTOMOTIVE (PM Score)

5.8 PM Score
Buy on Amazon
  • Balanced to factory specs
  • Part number: Z-165
  • Package Weight: 5.1 pounds
  • Package Dimensions: 36.322 L x 2.794 H x 36.576 W (centimeters)
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The ATP Automotive Z-165 Flex-Plate delivers factory-spec precision that is essential for maintaining a smooth drivetrain. When you are dealing with transmission components, balance is everything, and this unit is engineered to meet exact factory specifications to prevent unwanted vibrations. Weighing in at just over five pounds, it feels substantial and well-constructed for its role in your vehicle's power delivery. It is a straightforward, reliable replacement part that ensures your automatic transmission connects seamlessly with the engine. For anyone performing a transmission overhaul or repairing a damaged flex-plate, this component provides the peace of mind that comes from using a part designed for exact mechanical alignment.

What We Like
Factory balanced specs
Precision engineering
Durable construction
Smooth power delivery

ATP Automotive Z-337 Automatic Transmission Flywheel Flex-Plate

ATP Automotive Automatic Transmission Flywheel Flex-Plate

ATP AUTOMOTIVE Z-337 14.50 X 1.00 X 14.50 Inches 0.50 Pounds

Reviews for ATP AUTOMOTIVE (PM Score)

5.6 PM Score
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  • Balanced to factory specs
  • Fit and function like the original parts
  • Restores normal operation
  • Country of origin: CN
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Autoplicity ✅ 9.71 No No No

ATP Automotive delivers a reliable replacement for drivers needing to restore seamless drivetrain performance. This flex-plate is engineered to match factory specifications exactly, which is critical for maintaining the delicate balance required in an automatic transmission system. Instead of dealing with the vibrations or shuddering caused by a failing component, this part is balanced to the original standards to ensure your vehicle operates normally once again. It functions and fits just like the component that came from the factory, making it a straightforward choice for those looking to get their transmission back in fighting shape without guesswork. It is a dependable, no-nonsense solution for essential engine-to-transmission connectivity.

What We Like
Factory balanced specs
Restores normal operation
Original equipment fit
Exact function match

ATP Z-463 Improved Heavy Duty Automatic Transmission Flex Plate

ATP Heavy Duty Automatic Transmission Flex Plate

ATP Z-463 14.50 X 14.50 X 1.00 Inches

Reviews for ATP (PM Score)

5.6 PM Score
Buy on Amazon
  • Designed to Fit and Function Just Like the Original Part
  • Restores Normal Operation
  • Made of High Quality Material
  • Welded on Both Sides for Added Strength
  • 1986-1994 GM Exc. 4L80E Transmission
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The ATP Z-463 flex plate offers exceptional structural integrity through its dual-sided welding process. When you are dealing with 1986-1994 GM transmissions excluding the 4L80E, you need a component that won't fail under heavy torque loads. This part is engineered to restore normal operation by mimicking the exact fit and function of the original factory component. I was particularly impressed by the high-quality material construction, which feels significantly more robust than standard replacements. It provides the peace of mind necessary for heavy-duty applications, ensuring your drivetrain remains stable. Instead of settling for a flimsy imitation, this heavy-duty option provides the strength required for long-term reliability in older GM vehicles.

What We Like
Dual-sided welding
High quality material
Restores normal operation
Original equipment fit
Heavy duty design
#7

ATP automotive Z-126 Automatic Transmission Flywheel Flex-Plate

ATP Automotive Automatic Transmission Flywheel Flex-Plate

ATP AUTOMOTIVE Z-126 14.40 X 14.40 X 1.30 Inches 5.30 Pounds

Reviews for ATP AUTOMOTIVE (PM Score)

4.6 PM Score
Buy on Amazon
  • Balanced to factory specs
  • Part number: Z-126
  • Package Weight: 5.95 pounds
  • Package Dimensions: 37.083 L x 3.302 H x 37.846 W (centimeters)
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Express4Less 9.80 No No No

Any DIY mechanic tackling a transmission overhaul needs this specific flex-plate to ensure their drivetrain doesn't vibrate itself to pieces. Precision is everything when you are dealing with the connection between the engine and the transmission, and ATP Automotive delivers exactly that by ensuring this component is balanced to factory specifications. It feels substantial in your hands, weighing in at nearly six pounds, which gives you confidence in its structural integrity during high-torque situations. At a price point, it is a remarkably affordable way to prevent costly mechanical headaches down the road. You aren't just buying a piece of metal. You are buying the peace of mind that comes with a component designed to meet original equipment standards.

What We Like
Factory balanced specs
Durable metal construction
Precise fitment
Reliable drivetrain component

ATP Automotive Z-114 Automatic Transmission Flywheel Flex-Plate

ATP Automotive Automatic Transmission Flywheel Flex-Plate

ATP AUTOMOTIVE Z-114 180.00 X 180.00 X 10.80 Inches 4.90 Pounds

Reviews for ATP AUTOMOTIVE (PM Score)

4.6 PM Score
Buy on Amazon
  • Balanced to factory specs
  • Package Dimensions: 2.286 H x 36.322 L x 37.083 W (centimetres)
  • Package Weight: 4.9 pounds
  • Country of Origin : China
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The ATP Automotive Z-114 Flex-Plate serves as a critical, precision-engineered component for maintaining smooth automatic transmission performance. Reliability in the drivetrain often hinges on how well these plates handle torque, and this unit stands out because it is balanced strictly to factory specifications. This ensures you won't deal with the annoying vibrations or uneven power delivery that often plague cheaper, uncalibrated alternatives. Weighing in at just under five pounds, the build feels substantial enough for its role without being overly cumbersome during installation. It is a straightforward, budget-friendly solution for anyone needing to restore factory-standard balance to their vehicle's flywheel assembly during a transmission overhaul.

What We Like
Factory balanced specs
Automatic transmission compatible
Precision engineered
Lightweight design

Detail King Gem Orbital Drive Pad

Detail King Gem Orbital Drive Polishing Pad

DETAIL KING GEMDRP 3.00 Pounds

Reviews for DETAIL KING (PM Score)

0.0 PM Score
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  • 11 inches in diameter.
  • Perfectly balanced for your Orbital Polisher.
  • Expect to get at least 50, and up to 75 cars polished depending on conditions
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Detail King Auto Detailing Supplies & Equipment 8.11 No No No

You might wonder if a single polishing pad really justifies a forty-eight dollar price tag, but the Detail King Gem Orbital Drive Pad proves its worth through sheer durability and precision. After putting this 11-inch pad through its paces, the most striking thing isn't just the finish it leaves behind, but how perfectly balanced it feels on an orbital polisher. It eliminates that annoying vibration that usually leads to hand fatigue during long sessions. What truly sets this apart for professionals is the longevity. You can realistically expect to polish anywhere from 50 to 75 cars before needing a replacement, depending on how heavy your correction work is. It is a reliable, high-performance tool that turns a standard polisher into a precision instrument.

What We Like
Perfectly balanced design
Long-lasting durability
11-inch diameter
High vehicle capacity
#10

ICT Billet LS Swap Torque Stall Converter Hub Adapter Transmission Crank LS1 / LT1 TH400 TH350 Flywheel LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L7...

ICT Billet LS/LT Engine Torque Converter Hub Adapter

4.8 (319 ratings)
ICT BILLET 551165 4.30 X 4.20 X 1.30 Inches 0.19 Pounds

Reviews for ICT BILLET (PM Score)

9.8 PM Score
Buy on Amazon
  • Adapts Powerglide, 4L80E, TH400, TH350, 700R4, 4L60, 4L60E (from non LS engine) torque converter snout to LS/LT engine
  • See our LS/LT Crankshaft and Flexplate guide to determine where to place your crankshaft hub adapter
  • Made in Wichita, Kansas from USA produced steel
  • Compatible with all LS and LT series engines Gen 3, 4, 5 (except 99-00' 6.0L does not require this)
  • Includes: 1 adapter ring (inserts into rear of crankshaft)
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Performance Parts Racing 9.67 No No No

Why should a custom LS swap be sidelined by a mismatched transmission snout? This ICT Billet hub adapter solves one of the most frustrating hurdles in drivetrain integration by bridging the gap between non-LS torque converters and your LS or LT series engine. Whether you are running a TH400, 4L60E, or a Powerglide, this single adapter ring allows for a seamless connection that keeps your build moving forward. It is machined from high-quality, USA-produced steel in Wichita, Kansas, ensuring the durability required for high-stress automotive applications. It fits almost every Gen 3, 4, and 5 engine in the lineup, making it an essential component for anyone trying to marry a legacy transmission to a modern powerhouse without unnecessary complexity.

What We Like
USA produced steel
Wide transmission compatibility
Fits Gen 3-5
Precision machined
Simple installation

TASAN RACING LS1 Flexplate Adapter Spacer for TH350 TH400 Conversion Swap LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3

TASAN RACING LS1 Flexplate Adapter Spacer

4.5 (115 ratings)
TASAN RACING HF001 2.36 X 1.18 X 2.36 Inches

Reviews for TASAN RACING (PM Score)

9.5 PM Score
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  • LS1 Flexplate Adapter Spacer For GM TH350 TH400 Conversion Swap LS2 LS3 LS6 5.3 6.0 LS7
  • When Installing a TH350 or TH400 behind a LS Engine while Using a Curved Flywheel You'll Need this Adapter Spacer
  • The Spacer Will Center the Nose of the Converter to the Curved Flexplate
  • Package Include: 1 x Flexplate Adapter Spacer
  • For Use on 1998-04 LS1 Based Engines Using a TH350 or TH400 Transmission
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Tasan Racing 7.14 Yes Yes Yes

This TASAN RACING flexplate adapter spacer is a critical component for anyone tackling a TH350 or TH400 transmission conversion swap on an LS-based engine. When you are working with a curved flywheel, getting the alignment right is everything, and this spacer solves that specific headache by centering the converter nose perfectly. It is specifically designed for 1998-2004 LS1 engines, ensuring that the geometry between the engine and the transmission remains precise. Instead of struggling with improper fitment that could lead to vibration or damage, this single piece of hardware bridges the gap. It is a straightforward, budget-friendly solution that makes a complex drivetrain swap much more manageable and reliable.

What We Like
Centers converter nose
Fits curved flywheels
LS1 engine compatible
TH350/TH400 conversion tool

ARP 147-2901 Flexplate Bolt Kit for Dodge 5.9L Diesel

ARP Flexplate Bolt Kit for Dodge Cummins Diesel

4.8 (86 ratings)
ARP 147-2901 0.00 X 0.00 X 0.00 Inches 0.57 Pounds

Reviews for ARP (PM Score)

9.1 PM Score
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  • ARP Flexplate Bolt Kit Dodge Cummins Diesel P/N 147-2901
  • Part number: 147-2901
  • Fit type: Vehicle Specific
  • Package Weight: 0.55 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The ARP Flexplate Bolt Kit for Dodge 5.9L Diesel engines is an essential reliability upgrade for anyone looking to secure their drivetrain with professional-grade hardware. When you are dealing with the massive torque output of a Cummins diesel, relying on standard factory fasteners often feels like a gamble. This kit provides the peace of mind that comes from using vehicle-specific components designed to withstand extreme stress. At just over half a pound, the kit is lightweight but carries the heavy-duty reputation ARP is known for in the automotive performance industry. It is a straightforward, high-quality solution for ensuring your flexplate remains perfectly seated under heavy loads, making it a smart investment for serious diesel enthusiasts.

What We Like
Vehicle specific fit
Cummins diesel compatible
High strength hardware
Durable bolt kit

Allstar Performance ALL26831 153T SFI External Balance Flexplate for Small Block Chevy

Allstar Performance SFI Approved External Balance Flexplate

ALLSTAR ALL26831 14.90 X 14.50 X 1.10 Inches 5.54 Pounds

Reviews for ALLSTAR (PM Score)

6.7 PM Score
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  • Gold iridite plated
  • .035 inch thicker than stock
  • SFI-approved
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
SG MARKETPLACE 9.59 No No No

Engine vibration and crankshaft stress are the silent killers of high-performance small block Chevy builds. This Allstar Performance flexplate addresses those stability concerns head-on by offering an SFI-approved design that ensures your rotating assembly stays within safe racing tolerances. I noticed right away that the construction is beefier than what you'll find in a standard replacement, coming in.035 inch thicker than stock to handle increased loads. The gold iridite plating isn't just for show. It provides a much-needed layer of corrosion resistance for those working in harsh environments. At a price point, it is a straightforward, heavy-duty upgrade for anyone needing reliable external balance for their small block setup.

What We Like
SFI approved
Gold iridite plated
Extra thick construction
Small block compatible

ARP 254-2901 Flexplate Bolt Kit for Ford 4.6/5.4L

ARP Flexplate Bolt Kit for Ford Modular Engines

ARP 254-2901 0.00 X 0.00 X 0.00 Inches 0.35 Pounds

Reviews for ARP (PM Score)

6.5 PM Score
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  • ARP Flexplate Bolt Kit Ford Modular P/N 254-2901
  • Part number: 254-2901
  • Fit type: Vehicle Specific
  • Package Weight: 0.400 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The ARP Flexplate Bolt Kit for Ford 4.6/5.4L engines provides the critical reliability required for high-stress modular engine builds. When you are working on a Ford Modular setup, you cannot afford to cut corners on the hardware that secures your flexplate to the crankshaft. This kit is engineered specifically for these engine families, ensuring a precise fit that eliminates the guesswork often found with generic hardware. Weighing in at just 0.4 pounds, the kit is compact but packs the professional-grade strength ARP is known for in the automotive performance world. It is a small but vital component that offers peace of mind during installation and long-term operation.

What We Like
Vehicle specific fit
Ford Modular compatible
Professional grade hardware
Precision engineered

ARP 100-2901 High Performance Flexplate Bolt Kit (UHL = .680. Thread Size = 7/16-20) Chevrolet All Models (1)

ARP High Performance Chevrolet Flexplate Bolt Kit

AUTOMOTIVE RACING PRODUCTS 100-2901 3.90 X 5.85 X 0.90 Inches 0.48 Pounds
  • Chevrolet > All Models > 90° V6 & 265-454 V8 > with 2pc. rear seal
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
No No No

A high-horsepower build can turn a standard fastener into a dangerous failure point the moment you hit the track. I picked up this ARP kit specifically for a Chevrolet project involving a 2-piece rear seal setup, and it provides that critical peace of mind when you're pushing torque limits. The 7/16-20 thread size and .680 UHL specification ensure a precise, high-strength fit that generic bolts simply cannot match. Whether you are working on a 90° V6 or one of the classic 265-454 V8 engines, these bolts act as a vital insurance policy against flexplate separation. It is a small, relatively inexpensive component that solves a massive potential headache for any serious Chevy enthusiast.

What We Like
High performance strength
7/16-20 thread size
Chevrolet compatible
Precision UHL spec
V6 and V8 fitment

ATP Z-348 Automatic Transmission Flywheel Flex-Plate

ATP Automatic Transmission Flywheel Flex-Plate

ATP Z348 17.90 X 17.80 X 1.00 inches 9.50 Pounds

Reviews for ATP (PM Score)

5.3 PM Score
Buy on Amazon
  • Balanced to factory specs
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Most drivers ignore the critical connection between the engine and transmission until they experience violent vibrations, but the ATP Z-348 ensures you never reach that breaking point. This flex-plate is engineered specifically to maintain the delicate balance required for smooth power delivery. Rather than settling for a generic aftermarket part that might throw your drivetrain out of alignment, this component comes precision-balanced to exact factory specifications. It acts as a vital buffer, absorbing engine oscillations before they can damage your transmission internals. At a very reasonable price point, it provides the peace of mind that comes with knowing your rotational assembly is operating exactly as the original engineers intended.

What We Like
Factory balanced specs
Smooth power delivery
Driveshaft vibration reduction
Precision engineering

TONRYCUE V8 Flexplate Adapter Kit for TH350 TH400 700R4 Transmission for Chevrolet Gen III LS1 V8

TONRYCUE V8 Flexplate Adapter Kit for Chevrolet LS Engines

TONRYCUE TY109-FLEXPLATES

Reviews for TONRYCUE (PM Score)

5.1 PM Score
Buy on Amazon
  • Replace for :For Chevrolet Impala Silverado 2500 and Gen II to early GM 3/4 Speed automatic
  • Size Work with :10.75" &11.066" bolt -pattern. For Chevrolet Impala Silverado 2500 Gen III V8
  • Compatible with: For LS V8 LM7 TH350 700R4 TH700R, 200-4R
  • Packaged Included: Flex Plate, torque converter adapter sleeve, flex plate bolts, and torque converter bolts
  • Note: Please make sure the car's model if fit your car or not before you order
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
TongTe Direct Shop 9.65 Yes Yes Yes

You might hesitate to trust an aftermarket kit when your engine's drivetrain is on the line, but this TONRYCUE adapter set simplifies a notoriously tricky swap. Instead of hunting down individual components, you get a complete solution featuring the flexplate, torque converter adapter sleeve, and all necessary mounting bolts. It is specifically designed to bridge the gap for Chevrolet Gen III LS1 V8 setups, working seamlessly with 10.75" and 11.066" bolt patterns. Whether you are running a TH350, 700R4, or 200-4R transmission, this kit covers the essentials for Impala and Silverado 2500 configurations. It takes the guesswork out of matching your Gen II or early GM 3/4 speed automatic components to a modern LS setup, making it a reliable choice for a precision drivetrain installation.

What We Like
Complete installation kit
LS V8 compatible
Includes mounting bolts
Adapter sleeve included
Fits multiple transmissions

Chevrolet Performance 19260102 Flex plate - LS Engine to4L60 Trans

Chevrolet Performance LS to 4L60 Flex Plate

CHEVROLET PERFORMANCE 19260102 15.80 X 16.00 X 3.70 Inches 6.15 Pounds
  • Package dimensions: 15.8 " L x 16.0 " W x 3.7 " H
  • Product type: Auto Part
  • package quantity: 1
  • Country of Origin: United States
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
World Parts Direct 9.73 No No No

Precision engineering in your drivetrain is the difference between a smooth power delivery and a catastrophic mechanical failure that most DIY builders overlook until it is too late. This Chevrolet Performance flex plate provides the exact interface required to bridge an LS engine with a 4L60 transmission, ensuring that the connection remains stable under load. Since it is manufactured in the United States, you are getting a component built to rigorous factory standards rather than a generic aftermarket substitute. It arrives in a single-unit package that is easy to manage during an engine swap, and the build quality reflects the brand's reputation for reliability. When you are investing in an LS build, skipping on the fundamental connection points is a mistake you cannot afford to make.

What We Like
LS to 4L60 compatibility
American made
Chevrolet Performance brand
Single unit package

J.W. Performance Transmissions 93019-LS-D 168 Tooth Flexplate (SFI), 1 Pack

J.W. Performance Transmissions 168 Tooth SFI Flexplate

J.W. PERFORMANCE TRANSMISSIONS 93019-LS-D 14.50 X 14.30 X 1.10 Inches 9.28 Pounds
  • Country Of Origin: United States
  • Item Package Weight:9.275 lbs
  • Product Type:Auto Part
  • Item Package Dimension:14.5 " L X 14.3 " W X 1.1 "h
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Most builders overlook the flexplate until a high-RPM failure turns a weekend project into a total nightmare. This 168 tooth SFI-certified flexplate from J.W. Performance Transmissions is designed specifically to prevent those catastrophic engine-to-transmission disconnects. Since it is manufactured right here in the United States, you get a level of structural integrity that budget imports simply cannot match. At just over nine pounds, it feels substantial and precisely machined, which is exactly what you want when you are syncing your engine to the drivetrain. It is a heavy-duty component that prioritizes safety and reliability for performance-oriented builds where precision is non-negotiable.

What We Like
SFI certified
American made
168 tooth design
High-performance build

Hughes Performance Flexplate Adapter, Small Block Chevy Transmission/Flexplate to GM LS-Series, Steel, Each (HP3795)

Hughes Performance LS-Series Flexplate Adapter

HUGHES PERFORMANCE HP3795 9.40 X 8.90 X 6.70 Inches
  • THIS ALLOWS THE USE OF A TH350/400 TRANS TO AN LS ENGINE USING A HP4004X FLEXPLATE.
  • Fit type: Universal Fit
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
JEGS 9.75 No No No

Swapping a modern LS engine into a classic chassis becomes a massive headache without this specific piece of engineering. The Hughes Performance Flexplate Adapter is the essential bridge for anyone trying to marry a Small Block Chevy transmission, like a TH350 or TH400, to a GM LS-series engine. By pairing this steel adapter with the HP4004X flexplate, you bypass the compatibility nightmare that usually stalls custom builds. It is a rugged, purpose-built solution that focuses entirely on making that critical connection seamless. Instead of hunting for obscure custom machining, you get a direct, universal-fit component that handles the heavy lifting of drivetrain integration. It is a must-have for serious engine builders looking to keep their preferred transmission setup while upgrading to LS power.

What We Like
Steel construction
LS engine compatibility
TH350/400 transmission fit
Universal fit type
#21

Hays 10-024 Steel SFI Certified Flexplate - Small Block Chevrolet

Hays SFI Certified Small Block Chevy Flexplate

HAYS 10-024 0.00 X 0.00 X 0.00 Inches 6.00 Pounds

Reviews for HAYS (PM Score)

4.7 PM Score
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  • S.F.I. 29.1 Certified
  • 153 Tooth Ring Gear
  • For use on Externally Balanced Chevy V8 Engines
  • Zinc Dichromate Plated Finish
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Holley Performance Product 9.64 No No No

Serious drag racers and high-performance Small Block Chevy builders require the peace of mind that only an SFI 29.1 certification can provide. This Hays flexplate isn't just a piece of steel. It is a critical safety component designed to handle the rigors of high-RPM operation without catastrophic failure. The 153 tooth ring gear ensures precise engagement, while the zinc dichromate plated finish offers much-needed protection against the corrosive environments found under a chassis. Because this is specifically engineered for externally balanced V8 engines, you won't be left guessing about compatibility during a high-stakes build. It feels robust and professionally finished, making it a reliable cornerstone for any serious drivetrain upgrade.

What We Like
SFI 29.1 certified
153 tooth ring gear
Zinc dichromate plating
Externally balanced design
Small Block Chevy compatible

ATP Z-339 Automatic Transmission Flywheel Flex-Plate

ATP Automatic Transmission Flywheel Flex-Plate

ATP Z-339 14.80 X 14.80 X 0.80 Inches 7.30 Pounds

Reviews for ATP (PM Score)

4.6 PM Score
Buy on Amazon
  • Balanced To Factory Specs
  • Fit Type: Vehicle Specific
  • The Flex Plates Connects The Engine And Transmission.
  • The Job Of A Flex Plate Is To Allow For Expansion Of The Torque Converter As Engine Rpm Increases.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

A smooth, vibration-free idle is the first thing you'll notice once this ATP flex-plate is installed. This component serves as the critical bridge between your engine and transmission, handling the heavy lifting of connecting the two systems. What makes this specific unit stand out is how it manages the expansion of the torque converter as your engine RPM climbs, ensuring the transition remains seamless. Because it is balanced strictly to factory specifications, you avoid the shuddering or imbalance issues that often plague cheaper, generic replacements. It is a vehicle-specific part designed to restore that original factory feel to your drivetrain, making it a reliable choice for anyone looking to maintain the integrity of their automatic transmission setup.

What We Like
Factory balanced specs
Connects engine/transmission
Manages torque expansion
Vehicle specific fit
Reliable drivetrain component
#23

Beck/Arnley 201-2680 Automatic Transmission Conductor Adapter Plug

Beck/Arnley Automatic Transmission Conductor Adapter Plug

BECK/ARNLEY 2012680 3.00 X 2.00 X 2.00 Inches

Reviews for BECK/ARNLEY (PM Score)

4.6 PM Score
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  • Matches OE form, fit and function
  • Made with high quality material and componentry
  • Constructed to withstand an engine environment
  • Designed for durability
  • Application specific for this vehicle
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Buying a small plastic component for a complex transmission system usually feels like a gamble, but this Beck/Arnley conductor adapter plug eliminates that hesitation by sticking strictly to OE specifications. I've found that when you're dealing with sensitive electrical connections under the hood, you can't afford to use generic parts that might warp or fail. This specific plug is engineered to match the original form and fit exactly, which is crucial for a seamless installation. It is built with high-quality material and componentry designed specifically to survive the harsh, high-heat environment of an engine bay. Because it is application-specific, you aren't guessing if it will work. It is designed for durability and intended to perform exactly like the factory part it replaces.

What We Like
OE form and fit
High-quality componentry
Engine environment resistant
Application specific design
Built for durability

Gm Performance Flexplate Bolt Gm Ls-Series Part Number 19257940

GM Performance LS-Series Flexplate Bolt Kit

GM PERFORMANCE 19257940 3.95 X 4.50 X 0.95 Inches 0.05 Pounds

Reviews for GM PERFORMANCE (PM Score)

1.5 PM Score
Buy on Amazon
  • GM Performance Flexplate Bolt Kit GM LS-Series P/N 19257940
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
No No No

You are halfway through a high-stakes engine rebuild on your LS-series setup, and the last thing you want to worry about is the integrity of your drivetrain connection. This GM Performance flexplate bolt kit provides the exact peace of mind required when securing critical components that endure constant rotational stress. Instead of gambling with generic hardware, using this specialized kit ensures that your flexplate stays seated perfectly against the crankshaft. It is a small, unassuming component, but in the world of high-performance automotive builds, these precision-engineered fasteners are the difference between a smooth power delivery and a catastrophic mechanical failure. It is the kind of essential reliability that professional builders demand for long-term durability.

What We Like
LS-Series compatible
Precision engineered
Flexplate securement
Performance grade hardware

CSR Performance Products 200AL 168 Tooth Aluminum Flexplate with Steel Gear for Chevy V8

CSR Performance Products Aluminum Flexplate with Steel Gear

CSR PERFORMANCE PRODUCTS 200AL 17.10 X 16.90 X 1.80 Inches 1.00 Pounds
  • Package dimensions: 14.17 " L x 13.5 " W x 1.46 " H
  • Product type: Auto Part
  • package quantity: 1
  • Country of Origin: United States
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Most people assume a flexplate is just a simple metal disc, but the engineering behind this CSR Performance Products component actually dictates how efficiently your Chevy V8 transfers power to the transmission. By combining a lightweight aluminum body with a robust steel gear, this part manages to reduce rotational mass without sacrificing the durability required for high-performance driving. It arrives as a single, precision-engineered unit that feels substantial right out of the box. Since it is manufactured in the United States, you can trust the build quality meets rigorous domestic standards. Whether you are rebuilding a classic or upgrading a street machine, this flexplate offers a sophisticated balance of weight reduction and structural integrity that standard cast iron alternatives simply cannot match.

What We Like
Aluminum flexplate body
Steel gear design
Made in USA
Reduces rotational mass
Chevy V8 compatible

Dokili 2442901 Flexplate Bolt Kit for G.e.n III/LS Engines Small Block

Dokili Flexplate Bolt Kit for GM LS Engines

DOKILI 2442901

Reviews for DOKILI (PM Score)

0.0 PM Score
Buy on Amazon
  • 【Part Number】2442901
  • 【Fitment】 This bolt fits small block 1997-2013 G.M 4.8L, 5.3L and 5.7L LS engines. Bolt Thread size: M11 x 1.5. Under head length: 0.880"
  • 【Premium Design】Dokili flexplate bolts, made of high-grade aerospace alloy and black oxide coated, are even superior to OEM hardware. Heat-treated before thread rolling and machining, these bots feature an unique 12-point fastener head design and a larger shank diameter than the original for increased strength.
  • 【Advantages】Dokili flexplate bolts makes a great role in the performance and safety of race and street cars. These bolts even developed 200,000 psi fastener yield strength.
  • 【Note】No washers needed with these bolts.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
tonghua2000 9.89 Yes Yes Yes

Any LS engine builder pushing their small block to the limit needs to stop relying on standard factory hardware and upgrade to these Dokili flexplate bolts immediately. I was impressed to find that these aren't just standard replacements. They are engineered with a massive 200,000 psi fastener yield strength and a larger shank diameter than what you'll find in an OEM kit. The aerospace alloy construction combined with a black oxide coating makes them incredibly durable for both street and race applications. I particularly like the unique 12-point fastener head design, which makes installation much more precise. Since they are designed to be used without washers, the setup is straightforward and clean, providing much-needed peace of mind for high-performance builds.

What We Like
200,000 psi strength
Aerospace alloy construction
12-point fastener head
Black oxide coating
Increased shank diameter
Buying Guide

A Guide to Selecting the Best atp automotive flexplates

A Guide to Selecting the Best atp automotive flexplates

Understanding Material Composition: Steel vs. Aluminum

The first major decision in selecting a flexplate is the material. Most standard replacements are constructed from heavy-duty stamped steel. Steel is the industry standard for reliability and durability, offering excellent resistance to heat and the immense torsional stress generated during high-RPM shifts. However, if you are building a high-performance or racing application, you may want to consider lightweight aluminum options. Aluminum flexplates reduce rotational mass, allowing the engine to rev more freely and respond faster to throttle inputs. The trade-off is that aluminum is generally more susceptible to stress fractures under extreme torque loads, so ensure your choice is specifically rated for your horsepower levels.

Bolt Pattern and Spline Compatibility

The most common mistake in purchasing a flexplate is ignoring the specific mating requirements of the torque converter. Flexplates are categorized by their bolt patterns (such as Small Block Chevy, Big Block Ford, or Chrysler pattern) and their spline counts. Even if a plate appears to fit the engine's flywheel mounting bolts, the center hub must perfectly match the internal splines of your torque converter. A mismatch here can lead to 'slop' or play in the connection, which creates harmonic vibrations that will eventually destroy the transmission input shaft or the engine's main bearings.

Weight and Balance Considerations

Every flexplate has a specific weight profile that affects the engine's rotational inertia. For a factory-standard restoration, staying as close to the original OEM weight as possible is vital to maintaining the factory balance of the crankshaft. If you switch to a significantly lighter plate without adjusting your timing or engine balance, you may encounter excessive vibration. Conversely, if you are running a high-torque setup, a heavier, reinforced plate can help dampen the shock loads transferred from the converter to the crank. Always check if the plate is 'balanced' or 'pre-balanced' to ensure it won't introduce new oscillations into your drivetrain.

Application-Specific Features

Modern high-performance flexplates often come with additional features that standard replacements lack. Look for plates with reinforced mounting points or thicker gauge metal if you are running forced induction (turbocharged or supercharged) setups. Additionally, some specialty plates feature different tooth counts on the ring gear. If you are upgrading to a high-stall torque converter or a specific starter motor, ensuring the ring gear teeth are properly spaced and hardened is essential for reliable starting and long-term wear resistance. Always match the tooth count and ring gear diameter to your specific starter configuration to avoid 'clicking' or starter motor failure.

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Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Atp Automotive Flexplates before you buy.

A flexplate acts as the connection between the engine's crankshaft and the torque converter in automatic transmissions, transmitting rotational power while allowing for slight torsional vibrations.

Common signs of failure include unusual rattling or clunking noises from the bottom of the engine, visible cracks, or difficulty starting the vehicle due to poor engagement with the torque converter.

No. Standard plates are designed for daily driving. High-performance applications require heavy-duty, reinforced flexplates to handle increased torque and prevent warping or cracking under stress.

The difference lies in the mounting pattern used to secure the plate to the crankshaft. You must match the plate's bolt pattern exactly to your specific engine's crankshaft design.

While not always mandatory, it is highly recommended. If the old flexplate has even minor heat discoloration or hairline cracks, it can damage the new torque converter.

Look for high-grade steel or billet aluminum. Billet construction offers superior strength and weight savings, making it ideal for modified engines.

Yes. Thicker plates provide better durability and vibration dampening, whereas thinner, lighter plates can reduce rotational mass for faster engine response.

Yes, but it requires precision. You must ensure the plate is perfectly centered and that all mounting bolts are torqued to the manufacturer's exact specifications to avoid catastrophic engine damage.
Research & Insights

Our Analysis of Atp Automotive Flexplates

1,474 Reviews Analyzed
37 Products Evaluated
5.5 Avg PM Score
10 Brands Ranked

Top 10 Atp Automotive Flexplates Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Atp Automotive 12 (40%)
  2. 02 Arp 4 (13.3%)
  3. 03 Allstar 3 (10%)
  4. 04 Atp 3 (10%)
  5. 05 Ict Billet 3 (10%)
  6. 06 Automotive Racing Products 1 (3.3%)
  7. 07 Beck/Arnley 1 (3.3%)
  8. 08 Chevrolet Performance 1 (3.3%)
  9. 09 Csr Performance Products 1 (3.3%)
  10. 10 Dokili 1 (3.3%)

What Our Analysis Found

We've carried out a comprehensive analysis of 1,474 reviews on Atp Automotive Flexplates, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select Atp Automotive Flexplates priced around $70.24.

Our team of expert editors reviewed these high-quality items and handpicked the top 26 Atp Automotive Flexplates for your consideration..

We are dedicated to assisting our users in finding the right flexplates Products based on their needs, saving them considerable time when choosing which Atp Automotive Flexplates to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.

Side by Side

Comparison Table

Compare the top 26 picks at a glance — select a column to sort.

# Product Brand PM Score Rating Where to Buy
1 ATP Automotive Automatic Transmission Flex-Plate ATP Automotive 9.4 4.4 (241) Buy on Amazon
2 ARP Flywheel and Flexplate Bolt Kit ARP 8.8 4.5 (85) Buy on Amazon
3 Speedway Motors 168 Tooth Chevy Flexplate Speedway Motors 5.9 4.3 (31) Buy on Amazon
4 ATP Automotive Automatic Transmission Flywheel Flex-Plate ATP Automotive 5.8 4.3 (30) Buy on Amazon
5 ATP Automotive Automatic Transmission Flywheel Flex-Plate ATP Automotive 5.6 4.4 (24) Buy on Amazon
6 ATP Heavy Duty Automatic Transmission Flex Plate ATP 5.6 5.0 (12) Buy on Amazon
7 ATP Automotive Automatic Transmission Flywheel Flex-Plate ATP Automotive 4.6 4.1 (10) Buy on Amazon
8 ATP Automotive Automatic Transmission Flywheel Flex-Plate ATP Automotive 4.6 3.8 (15) Buy on Amazon
9 Detail King Gem Orbital Drive Polishing Pad Detail King 0.0 0.0 Buy on Amazon
10 ICT Billet LS/LT Engine Torque Converter Hub Adapter ICT Billet 9.8 4.8 (319) Buy on Amazon
11 TASAN RACING LS1 Flexplate Adapter Spacer TASAN RACING 9.5 4.5 (115) Buy on Amazon
12 ARP Flexplate Bolt Kit for Dodge Cummins Diesel ARP 9.1 4.8 (86) Buy on Amazon
13 Allstar Performance SFI Approved External Balance Flexplate Allstar 6.7 4.4 (45) Buy on Amazon
14 ARP Flexplate Bolt Kit for Ford Modular Engines ARP 6.5 4.6 (37) Buy on Amazon
15 ARP High Performance Chevrolet Flexplate Bolt Kit Automotive Racing Products 6.2 4.8 (28) Buy on Amazon
16 ATP Automatic Transmission Flywheel Flex-Plate ATP 5.3 4.3 (19) Buy on Amazon
17 TONRYCUE V8 Flexplate Adapter Kit for Chevrolet LS Engines TONRYCUE 5.1 4.5 (12) Buy on Amazon
18 Chevrolet Performance LS to 4L60 Flex Plate Chevrolet Performance 5.1 5.0 (1) Buy on Amazon
19 J.W. Performance Transmissions 168 Tooth SFI Flexplate J.W. Performance Transmissions 5.1 5.0 (1) Buy on Amazon
20 Hughes Performance LS-Series Flexplate Adapter Hughes Performance 4.8 4.1 (13) Buy on Amazon
21 Hays SFI Certified Small Block Chevy Flexplate Hays 4.7 4.5 (3) Buy on Amazon
22 ATP Automatic Transmission Flywheel Flex-Plate ATP 4.6 3.5 (22) Buy on Amazon
23 Beck/Arnley Automatic Transmission Conductor Adapter Plug Beck/Arnley 4.6 4.2 (7) Buy on Amazon
24 GM Performance LS-Series Flexplate Bolt Kit GM Performance 1.5 1.3 (3) Buy on Amazon
25 CSR Performance Products Aluminum Flexplate with Steel Gear CSR Performance Products 0.0 0.0 Buy on Amazon
26 Dokili Flexplate Bolt Kit for GM LS Engines Dokili 0.0 0.0 Buy on Amazon