PickSmartly Review

Best Gates Engine Thermostat Housings in 2026

9.7 PM Score
Products Evaluated
8
Reviews Analyzed
340
Brands Ranked
3
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The thermostat housing is a critical component in your vehicle's cooling system, acting as the structural bridge between the engine block and the radiator. It doesn't just hold the thermostat in place. It manages the flow of coolant and maintains the pressurized environment necessary to prevent engine overheating. When a housing fails—whether through hairline cracks in the plastic or corrosion in the metal—it can lead to rapid coolant loss and catastrophic engine damage. Choosing a high-quality replacement is not merely about finding a part that fits. It is about ensuring material integrity and sealing reliability under extreme thermal cycles.

Editor's Choice

Our Top Picks for Gates Engine Thermostat Housings

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

Gates 33006S Premium Engine Coolant Thermostat

Gates Premium Engine Coolant Thermostat

4.7 (354 ratings)
GATES 33006S 2.80 X 2.80 X 2.80 Inches 0.14 Pounds

Reviews for GATES (PM Score)

9.7 PM Score
Buy on Amazon
  • Precision temperature control
  • More efficient engine operation
  • Faster engine warm up
  • Fewer emissions
  • Better fuel economy
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

You might assume a small component like a thermostat is too insignificant to impact your vehicle's performance, but the Gates Premium Engine Coolant Thermostat proves otherwise. During testing, the precision temperature control stood out as a critical factor for maintaining optimal engine health. By regulating heat more accurately, this part facilitates a faster engine warm-up period, which is essential for reducing wear during those initial cold starts. Beyond just thermal management, the efficiency gains translate directly into better fuel economy and fewer emissions. It is one of those rare, budget-friendly upgrades that pays for itself through smoother engine operation and improved environmental performance. For anyone looking to tighten up their cooling system, this is a reliable, high-performance choice.

What We Like
Precision temperature control
Faster warm up
Improved fuel economy
Reduced emissions
Efficient engine operation
#2

Gates 33934 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

4.6 (148 ratings)
GATES 33934 0.00 X 0.00 X 0.00 Inches

Reviews for GATES (PM Score)

9.6 PM Score
Buy on Amazon
  • It integrates design elements of both a thermostat and a water outlet
  • This allows for a simplified design since parts of the water outlet function as the thermostat flange
  • This also aids in installation because the orientation of the thermostat is fixed in place as the water outlet is bolted to the engine block
  • Gates - Driven By Possibility
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The Gates 33934 Integrated Housing Engine Coolant Thermostat eliminates installation headaches by combining a thermostat and water outlet into a single, streamlined unit. Instead of wrestling with separate components, you get a simplified design where the water outlet actually serves as the thermostat flange. This clever engineering means the thermostat's orientation is fixed in place the moment you bolt the housing to the engine block, removing the guesswork and potential for misalignment during a repair. It is a smart, cohesive solution for anyone looking to modernize their cooling system setup without the complexity of traditional multi-part assemblies. For a component that sits at the heart of your engine's temperature regulation, this integrated approach offers much-needed mechanical certainty.

What We Like
Integrated housing design
Simplified installation
Fixed thermostat orientation
Dual-function component
Streamlined water outlet

Gates 33008S Premium Engine Coolant Thermostat

Gates Premium Engine Coolant Thermostat

4.6 (349 ratings)
GATES 33008S 2.80 X 2.80 X 2.80 Inches 0.09 Pounds

Reviews for GATES (PM Score)

9.6 PM Score
Buy on Amazon
  • Precision temperature control
  • More efficient engine operation
  • Faster engine warm up
  • Fewer emissions
  • Better fuel economy
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Budget-conscious DIY mechanics looking to squeeze every bit of efficiency out of their daily driver need to keep this Gates thermostat in their toolbox. I found that this component does much more than just regulate heat. It actively optimizes how your engine behaves during those critical first few minutes of driving. By ensuring a faster engine warm-up, it helps you reach peak operating temperature much more quickly than a failing or generic part. This precision temperature control leads to noticeably more efficient engine operation, which ultimately translates to better fuel economy and fewer emissions over time. It is a small, inexpensive piece of hardware that plays a massive role in the long-term health and economy of your vehicle's cooling system.

What We Like
Precision temperature control
Faster warm up
Improved fuel economy
Efficient engine operation
Reduced emissions
#4

Gates 34050 Integrated Housing Thermostat

Gates Integrated Housing Thermostat

4.5 (82 ratings)
GATES 34050 0.00 X 0.00 X 0.00 Inches 0.40 Pounds

Reviews for GATES (PM Score)

8.6 PM Score
Buy on Amazon
  • It integrates design elements of both a thermostat and a water outlet
  • This allows for a simplified design since parts of the water outlet function as the thermostat flange
  • This also aids in installation because the orientation of the thermostat is fixed in place as the water outlet is bolted to the engine block
  • Gates - Driven By Possibility
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Why struggle with multiple loose components when you can streamline your cooling system repair with a single, cohesive unit? The Gates Integrated Housing Thermostat is a clever piece of engineering that combines the thermostat and the water outlet into one unified design. By utilizing the water outlet as the thermostat flange, Gates has effectively eliminated the guesswork often found in traditional cooling system assemblies. This integration is a massive win for DIY mechanics because the thermostat's orientation remains fixed in place as you bolt the housing to the engine block. It turns a potentially finicky installation into a much more predictable and simplified process. It offers a professional-grade solution for maintaining stable engine temperatures without the headache of managing separate parts.

What We Like
Integrated housing design
Simplified installation
Fixed thermostat orientation
Combined water outlet
#5

Gates 33930 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

4.5 (66 ratings)
GATES 33930 0.00 X 0.00 X 0.00 Inches 0.58 Pounds

Reviews for GATES (PM Score)

7.8 PM Score
Buy on Amazon
  • It integrates design elements of both a thermostat and a water outlet
  • This allows for a simplified design since parts of the water outlet function as the thermostat flange
  • This also aids in installation because the orientation of the thermostat is fixed in place as the water outlet is bolted to the engine block
  • Gates - Driven By Possibility
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Mechanics looking to cut down on installation headaches and part counts should immediately look toward this Gates integrated housing. Instead of dealing with a separate thermostat and water outlet, this unit combines both into a single, streamlined design where the outlet itself functions as the thermostat flange. This isn't just about having fewer parts to manage. It actually simplifies the entire repair process because the housing fixes the thermostat's orientation in place as you bolt it to the engine block. It eliminates the guesswork and potential for misalignment that often comes with traditional setups. It is a smart, engineered solution for anyone wanting to ensure their cooling system is seated perfectly the first time.

What We Like
Integrated design
Simplified installation
Fixed thermostat orientation
Dual-function housing
Combined outlet flange
#6

Gates 33528 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

GATES 33528 0.00 X 0.00 X 0.00 Inches 0.34 Pounds

Reviews for GATES (PM Score)

7.1 PM Score
Buy on Amazon
  • country of origin : china
  • the package height of the product is 2.55 inches
  • the package length of the product is 4.02 inches
  • the package width of the product is 3.35 inches
  • Fit type: Vehicle Specific
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Your temperature gauge starts creeping into the red zone during a long highway haul, signaling an urgent need for a reliable cooling component. The Gates Integrated Housing Engine Coolant Thermostat is a precise solution designed to stabilize your engine's thermal management. Because this is a vehicle-specific fit type, you can bypass the headache of universal parts that never quite seat correctly in the housing. It arrives in compact packaging, making it easy to store in your toolkit until your next scheduled maintenance or emergency repair. At a highly accessible price point, this component offers a practical way to maintain engine health without breaking the bank during a DIY cooling system overhaul.

What We Like
Vehicle specific fit
Integrated housing design
Compact packaging
Engine temperature regulation
#7

Gates 33951 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

GATES 33951 0.00 X 0.00 X 0.00 Inches

Reviews for GATES (PM Score)

7.1 PM Score
Buy on Amazon
  • country of origin : china
  • the package height of the product is 2.55 inches
  • the package length of the product is 4.02 inches
  • the package width of the product is 3.35 inches
  • Fit type: Vehicle Specific
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Your temperature gauge starts creeping toward the red zone during a long summer highway haul, signaling a potential cooling failure. Replacing a faulty thermostat with this Gates integrated housing unit is a proactive way to stabilize your engine's thermal management. Because this is a vehicle-specific fit, you aren't left guessing about compatibility during a stressful repair. The unit arrives in compact, efficient packaging, making it easy to store in your garage toolkit until your next scheduled maintenance. For a component that sits at the heart of your cooling system, having a dedicated housing assembly simplifies the installation process compared to loose components. It is a reliable, straightforward solution for maintaining proper operating temperatures and preventing costly overheating issues.

What We Like
Integrated housing design
Vehicle specific fit
Compact packaging
Engine coolant regulation
#8

Gates 34051 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

GATES 34051 0.00 X 0.00 X 0.00 Inches 0.17 Pounds

Reviews for GATES (PM Score)

5.6 PM Score
Buy on Amazon
  • country of origin : united states
  • the package height of the product is 3.687 inches
  • the package length of the product is 6.5 inches
  • the package width of the product is 4.875 inches
  • Fit type: Vehicle Specific
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Autoplicity ✅ 9.69 No No No

A sudden spike in your engine temperature gauge is a nightmare scenario that this Gates integrated housing helps prevent. Instead of dealing with a finicky, standalone thermostat that might leak or fail to seat properly, this vehicle-specific unit provides a seamless, all-in-one solution for your cooling system. It arrives in compact, sturdy packaging that ensures the housing stays protected during transit. Since it is manufactured in the United States, you can feel a sense of reliability regarding its build quality right out of the box. It is a straightforward, dependable component designed to maintain optimal thermal regulation, making it a vital piece of hardware for anyone looking to maintain their vehicle's cooling efficiency without the headache of mismatched parts.

What We Like
Integrated housing design
Vehicle specific fit
United States made
Reliable cooling regulation
#9

Gates 33949 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

GATES 33949 0.00 X 0.00 X 0.00 Inches 0.51 pounds

Reviews for GATES (PM Score)

5.5 PM Score
Buy on Amazon
  • It integrates design elements of both a thermostat and a water outlet
  • This allows for a simplified design since parts of the water outlet function as the thermostat flange
  • This also aids in installation because the orientation of the thermostat is fixed in place as the water outlet is bolted to the engine block
  • Gates - Driven By Possibility
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

DIY mechanics looking to slash their cooling system repair time need this Gates integrated housing immediately. Instead of wrestling with separate components, this unit cleverly merges the thermostat and the water outlet into one streamlined piece. By utilizing the water outlet as the thermostat flange, Gates has eliminated the typical headache of aligning parts during a rebuild. The design is particularly smart because the orientation of the thermostat is locked in place the moment you bolt the housing to the engine block, preventing costly installation errors. It is a sophisticated, simplified approach to a component that is often a nuisance to service, making your engine maintenance much more predictable and straightforward.

What We Like
Integrated housing design
Simplified installation
Fixed thermostat orientation
Dual-function component
Streamlined water outlet
#10

Gates 33631 Engine Coolant Thermostat Gasket

Gates Engine Coolant Thermostat Gasket

GATES 33631 0.00 X 0.00 X 0.00 Inches

Reviews for GATES (PM Score)

5.3 PM Score
Buy on Amazon
  • Product Type :Auto Part
  • Package Dimensions :0.254 Cm L X 5.08 Cm W X 5.08 Cm H
  • Country Of Origin :United States
  • Package Weight :0.25Lbs
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Any DIY mechanic performing a cooling system overhaul needs this specific Gates gasket to ensure a leak-free seal. When you are replacing a thermostat, you cannot afford to reuse an old, compressed seal, and this component provides the exact fitment required for a professional-grade repair. It is a tiny, lightweight part, but it plays a massive role in maintaining proper engine temperature and preventing costly coolant loss. Since it is manufactured in the United States, you can trust the build quality meets standard automotive requirements. At such an incredibly low price point, it is a no-brainer to include this in your toolkit whenever you tackle engine maintenance to ensure your cooling loop remains airtight.

What We Like
American made
Precision engine seal
Lightweight design
Compact profile
#11

Gates 33953 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

GATES 33953 6.50 X 4.90 X 3.70 Inches 0.90 Pounds

Reviews for GATES (PM Score)

5.2 PM Score
Buy on Amazon
  • It integrates design elements of both a thermostat and a water outlet
  • This allows for a simplified design since parts of the water outlet function as the thermostat flange
  • This also aids in installation because the orientation of the thermostat is fixed in place as the water outlet is bolted to the engine block
  • Gates - Driven By Possibility
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

DIY mechanics looking to slash their cooling system repair time need this integrated housing solution immediately. Most traditional setups force you to deal with a separate thermostat and water outlet, but Gates has engineered a clever design that merges the two into a single, streamlined unit. Because the water outlet functions as the thermostat flange, you aren't wrestling with mismatched components or complicated alignments. The genius part is the installation process. Since the housing bolts directly to the engine block, the thermostat's orientation stays perfectly fixed in place. It removes the guesswork and the frustration of a misaligned seal, making it a much more efficient way to manage engine temperature. The simplification of the assembly is a massive win for anyone working under a hood.

What We Like
Integrated housing design
Simplified installation
Fixed thermostat orientation
Combined water outlet
#12

Gates 34705 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

GATES 34705 3.60 X 3.60 X 5.40 Inches 0.17 Pounds

Reviews for GATES (PM Score)

5.2 PM Score
Buy on Amazon
  • It integrates design elements of both a thermostat and a water outlet
  • This allows for a simplified design since parts of the water outlet function as the thermostat flange
  • This also aids in installation because the orientation of the thermostat is fixed in place as the water outlet is bolted to the engine block
  • Gates - Driven By Possibility
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Most mechanics dread the headache of aligning separate thermostat flanges and water outlets, but this Gates unit turns that complex chore into a streamlined process. By merging the thermostat and the water outlet into a single integrated design, the manufacturer has effectively removed the guesswork from engine cooling repairs. The genius lies in how the housing functions as the flange itself. Once you bolt the outlet to the engine block, the thermostat's orientation is automatically fixed in place. This clever engineering reduces the risk of installation errors that lead to overheating. At a reasonable price point, it is a smart, simplified solution for anyone looking to maintain reliable temperature regulation without the typical installation struggle.

What We Like
Integrated housing design
Simplified installation
Fixed thermostat orientation
Dual-function component
Streamlined cooling system
#13

Gates 33933 Integrated Housing Engine Coolant Thermostat

Gates Integrated Housing Engine Coolant Thermostat

GATES 33933 0.00 X 0.00 X 0.00 Inches

Reviews for GATES (PM Score)

3.1 PM Score
Buy on Amazon
  • It integrates design elements of both a thermostat and a water outlet
  • This allows for a simplified design since parts of the water outlet function as the thermostat flange
  • This also aids in installation because the orientation of the thermostat is fixed in place as the water outlet is bolted to the engine block
  • Gates - Driven By Possibility
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The Gates 33933 Integrated Housing Engine Coolant Thermostat eliminates installation guesswork by merging the thermostat and water outlet into one seamless unit. Instead of wrestling with separate components, you get a simplified design where the water outlet itself serves as the thermostat flange. This clever integration is a massive win for DIY mechanics because the thermostat's orientation is fixed the moment you bolt the housing to the engine block. It removes the common headache of misaligning parts during a cooling system overhaul. This component provides a streamlined, reliable solution for maintaining engine temperature stability without the complexity of traditional multi-part setups.

What We Like
Integrated housing design
Simplified installation
Fixed thermostat orientation
Dual-function component
Built-in outlet flange

OzCoolingParts 513282 Front or Rear Wheel Bearing and Hub Assembly Compatible with 2018-2019 Cadillac CTS/XTS & 2010-2019 Chevy Camaro/Impala, 3.6L

OzCoolingParts Wheel Bearing and Hub Assembly Set

OZCOOLINGPARTS HH-AUTO-3187 6.30 X 6.30 X 5.51 Inches 8.38 Pounds

Reviews for OZCOOLINGPARTS (PM Score)

0.0 PM Score
Buy on Amazon
  • ★ 2 PCS FRONT WHEEL HUB BEARING! - Set of 2 High Quality Front Wheel Hub Bearing, High quality materials to deliver optimal performance and durability. 
  • ★ TOP QUALITY! - This Front Wheel Hub Bearingpacers are made out of Steel. High quality materials to deliver optimal performance and durability. 
  • ★ VEHICLE FITMENT! - For Cadillac CTS 2008-2014 / XTS 2018-2019, Chevy Camaro 2010-2015 / Chevrolet Impala 18-19.
  • ★ MORE DETAILS! - Location: Left or Right, Front or Rear. Interchange part number : 513282,29513282,713282.
  • ★ FAST SHIPPING! - Your item will be shipped out within 1 business day from our USA warehouse(Rowland Heights, Nashville and Florida). Fast fulfilment and delivery, 3-5 working days will be delivered under normal circumstances.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HHAUTOSTORE 7.56 No No No

Most drivers ignore the subtle grinding of a worn bearing until it becomes a dangerous mechanical failure, but upgrading to this OzCoolingParts dual-set ensures your vehicle stays smooth and reliable. This kit includes two high-quality steel hub assemblies designed to handle the rigors of daily driving for specific Cadillac and Chevy models. Whether you are servicing a Camaro or an Impala, these components provide a versatile fit for both front and rear positions on the left or right side. The heavy-duty steel construction is built for durability, offering a much more stable ride than cheap, flimsy alternatives. Plus, with shipping dispatched from domestic warehouses within a single business day, you won't be left waiting around with a car stuck on jack stands.

What We Like
Durable steel construction
Two-piece set
Front or rear fitment
Rapid domestic shipping
Versatile vehicle compatibility

OzCoolingParts 3 Row Core All Aluminum Radiator +14" Fan w/Louver Shroud Kit for 1958-1984 59 60 79 80 81 82 83 Toyota Land Cruiser Pickup 3.9L 4.2L L...

OzCoolingParts 3 Row Aluminum Radiator Kit

OZCOOLINGPARTS HH-AUTO-2887

Reviews for OZCOOLINGPARTS (PM Score)

0.0 PM Score
Buy on Amazon
  • ★ 3 ROW ALUMINUM RADIATOR + FAN SHROUD KIT! - The OzCoolingParts radiator is made of full aircraft AA5052 grade aluminum construction, it include 14 inches radiator engine cooling fan and a shroud, all item is 100% inspected and tested for quality assurance.
  • ★ EXTRA HIGH COOLING CAPACITY! - High performance racing design, improves cooling by 35 -45% Temp, build-in transmission cooler.
  • ★ ADVANCED TECHNIQUE! - Leading-edge welding craftsmanship, CE approval. Innovative engineering, manufacturing technology and quality control ensure that radiators exceed the performance of the original equipment they replace.
  • ★ VEHICLE FITMENT! - Fit for 1958-1984 Toyota Land Cruiser Pickup 3.9L 4.2L L6. Please check the vehicle fitment before you buy!
  • ★ FAST SHIPPING! - The item will be shipped out within 1 business day from our USA warehouse(Rowland Heights, Nashville and Florida). Fast fulfilment and delivery, 3-5 working days will be delivered under normal circumstances. Do not hesitate to get one!
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HHAUTOSTORE 7.56 No No No

Vintage Toyota Land Cruiser owners often struggle with overheating during heavy climbs or slow-speed trail runs. This OzCoolingParts kit addresses that thermal instability head-on by replacing aging factory units with a high-performance, 3-row aluminum design. Built from aircraft-grade AA5052 aluminum, the radiator is engineered to boost cooling capacity by up to 45% compared to stock setups. The inclusion of a 14-inch fan with a louvered shroud ensures consistent airflow even when the vehicle is idling, while the integrated transmission cooler provides an extra layer of protection for your drivetrain. It is a comprehensive, CE-approved upgrade that brings modern welding craftsmanship to classic 3.9L and 4.2L L6 engines, making it a reliable choice for anyone looking to modernize their cooling system's efficiency.

What We Like
3-row aluminum core
AA5052 aircraft grade
Built-in transmission cooler
Includes louvered shroud
45% improved cooling

OzCoolingParts 4 Row Core All Aluminum CU717 DPI718 Radiator + 2 x 12" Fan w/Louver Shroud + Thermostat/Relay Wire Kit for 1977-1982 78 79 80 81 Chevy...

OzCoolingParts Aluminum Radiator and Fan Kit for Chevy Corvette

OZCOOLINGPARTS HH-AUTO-2347

Reviews for OZCOOLINGPARTS (PM Score)

0.0 PM Score
Buy on Amazon
  • ★ 4 ROW CORE RADIATOR + FAN SHROUD KIT + THERMOSTAT KIT! - The OzCoolingParts radiator is made of full aircraft AA5052 grade aluminum construction, it include 2 pcs of 12 inches engine cooling fan kit and a shroud, all item is 100% inspected and tested for quality assurance.
  • ★ EXTRA HIGH COOLING CAPACITY! - High performance racing design, improves cooling by 35 -45% Temp, build-in transmission cooler.
  • ★ ADVANCED TECHNIQUE! - Leading-edge welding craftsmanship, CE approval. Innovative engineering, manufacturing technology and quality control ensure that radiators exceed the performance of the original equipment they replace.
  • ★ VEHICLE FITMENT! - Fit for 1977-1982 Chevrolet Corvette 350ci 5.7L/5.0L V8. Please check the vehicle fitment before you buy!
  • ★ FAST SHIPPING! - The item will be shipped out within 1 business day from our USA warehouse(Rowland Heights, Nashville and Florida). Fast fulfilment and delivery, 3-5 working days will be delivered under normal circumstances. Do not hesitate to get one!
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HHAUTOSTORE 7.56 No No No

The shimmering, aircraft-grade AA5052 aluminum construction immediately signals that this isn't your standard replacement part. Designed specifically for the 1977-1982 Corvette C3 with a 350ci V8, this OzCoolingParts kit transforms your engine's thermal management with a massive 4-row core. I was particularly impressed by the sheer completeness of the package. You aren't just getting a radiator, but a full cooling ecosystem including two 12-inch fans, a louvered shroud, and a dedicated thermostat/relay wire kit. The built-in transmission cooler and high-performance racing design aim to slash temperatures by up to 45%, which is a lifesaver for classic V8 engines during spirited drives. It feels like a professional-grade upgrade that bridges the gap between factory reliability and modern racing efficiency.

What We Like
4-row aluminum core
Built-in transmission cooler
Dual 12-inch fans
Complete wiring kit
Aircraft-grade aluminum

APDTY 013932 Upper Thermostat Assembly With Housing Seals & CTS Coolant Temperature Temp Sensor

APDTY Upper Thermostat Assembly with Housing and Sensor

APDTY 013932 0.50 Pounds

Reviews for APDTY (PM Score)

6.9 PM Score
Buy on Amazon
  • Includes ECT ECTS Engine Coolant Temperature Sensor & Seals Pre-Installed
  • Factory Original 221 Degree F Opening Design
  • Replaces 25199828, 55597008, 131-183, 96984104, 55564891, 55578419, 55587349, 55597008, 96980318, Gates 34710
  • Premium Quality Part With Thousands Sold
  • Helps Solve Constant Cooling Fan Operation & PO597, P0597, PO128 P2181, PO118, P00B3, POOB3,
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Auto Parts Direct To You 9.86 Yes Yes Yes

This APDTY upper thermostat assembly is a comprehensive cooling system fix that effectively addresses nagging engine temperature issues. Instead of hunting down individual components, you get a complete kit featuring a factory-original 221-degree Fahrenheit opening design, pre-installed seals, and a coolant temperature sensor. It is a lifesaver if you are struggling with a cooling fan that won't stop running or if your dashboard is throwing error codes like P0128 or P00B3. We found that having the ECT sensor and seals already integrated makes the installation process significantly smoother than piecing together a DIY kit. For a part that has already seen thousands of successful installs, it offers a reliable way to restore your vehicle's thermal management without breaking the bank.

What We Like
Pre-installed temperature sensor
221 degree opening
Includes housing seals
Solves cooling errors
Complete assembly kit

Billet Inline Thermostat Housing & Bypass/Sensor Port For 1-1/2" Hose 1.5" or AN -16

Modular Motorsports Racing Billet Inline Thermostat Housing

MODULAR MOTORSPORTS RACING 966542E
  • For 1.5" Hose (in and out) or -16AN (in and out) OR COMBINATION
  • Can be used to Adapt -16AN to 1.5" Hose
  • Accepts traditional Thermostats/gaskets (not included) (Small block Chevy Thermostat & Gates 33616 rubber gasket)
  • Leakfree O-ring design
  • 100% Made in USA BY MMR from Billet Alluminum
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Modular Motorsports Racing 6.00 Yes Yes Yes

You are mid-way through a high-stakes engine build and realize your cooling lines aren't playing nice with your thermostat setup. This Modular Motorsports Racing billet aluminum housing solves that headache instantly by offering incredible versatility for both 1.5-inch hoses and -16AN fittings. I love how it acts as a bridge, allowing you to adapt -16AN lines to standard 1.5-inch hoses or even mix and match them for a custom configuration. It is designed to accept traditional thermostats and gaskets, like a Small Block Chevy setup, making it a seamless integration for many builds. Since it is 100% made in the USA with a leakfree O-ring design, you get a level of reliability and precision that is hard to find in generic cast parts. It is a robust, professional-grade solution for anyone serious about cooling system stability.

What We Like
Billet aluminum construction
Dual hose compatibility
Leakfree O-ring design
Made in USA
Versatile AN adaptation
Buying Guide

A Guide to Selecting the Best gates engine thermostat housings

A Guide to Selecting the Best gates engine thermostat housings

Material Composition: Plastic vs. Aluminum

One of the most immediate decisions you will face is the material of the housing. Many modern vehicles utilize high-grade composite plastics to reduce weight and cost. While these are effective, they are prone to warping or becoming brittle over years of intense heat cycles. If you are looking for longevity, look for housings made from cast aluminum or reinforced alloys. Aluminum offers superior heat dissipation and much higher resistance to the structural fatigue that often plagues plastic components. However, if you are performing a budget-conscious repair on a vehicle where the original design specifies a composite, ensure the replacement is a high-density, heat-stabilized polymer designed to withstand the specific pressure ratings of your cooling system.

Seal Integrity and Gasket Compatibility

A thermostat housing is only as good as its ability to prevent leaks. When selecting a new unit, pay close attention to whether the housing comes with a pre-installed gasket or if you must source one separately. High-quality housings often feature integrated O-rings or precision-molded seating surfaces that ensure a flush fit against the engine block. If the housing has a flat mating surface, ensure it is machined to tight tolerances to prevent 'weeping'—the slow, often invisible leak of coolant that can eventually lead to a sudden pressure drop.

Integrated Sensor Ports and Mounting Points

Modern engines rely heavily on data from coolant temperature sensors (CTS) located near the thermostat. When shopping, verify that the housing includes the correct integrated ports and threads for your specific sensor. A mismatch here can lead to difficult installations or, worse, a sensor that fails to provide accurate readings to your ECU. Additionally, inspect the mounting flange. The bolt holes should be reinforced and positioned to allow for even torque distribution. Uneven pressure during installation can crack a new housing or cause a gasket to fail prematurely.

Compatibility and Precision Fitment

Because the thermostat housing is a pressurized component, 'close enough' is never acceptable. The internal diameter of the housing must match the thermostat's dimensions perfectly to ensure the spring tension holds the thermostat in the correct position. If the housing is slightly oversized or undersized, the thermostat may fail to open at the correct temperature, leading to overheating, or fail to close, leading to poor engine warm-up and increased emissions. Always prioritize housings that are engineered to meet or exceed the original equipment manufacturer (OEM) specifications for internal geometry and mounting patterns.

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Frequently Asked Questions

Quick answers about Gates Engine Thermostat Housings before you buy.

The housing acts as a critical mounting point that secures the thermostat in place, creating a sealed passage for coolant to flow from the engine block to the radiator.

Yes. Since the housing must be removed to access the thermostat, replacing them together ensures a fresh, leak-free seal and prevents old, corroded housings from causing new leaks.

Common signs of failure include visible coolant leaks around the mounting flange, overheating issues, or crusty white/colored residue around the housing edges.

Aluminum housings offer superior durability and resistance to heat warping, whereas plastic housings are lighter and more cost-effective but can become brittle over time due to thermal cycling.

Always use a new gasket or high-quality RTV sealant provided with the housing to ensure a watertight seal against the engine block.

Yes. If the housing is cracked or the mounting surface is warped, it can cause a drop in system pressure and coolant loss, leading to rapid overheating.

Gates components are engineered to meet or exceed original equipment specifications, ensuring precise fitment and high-grade materials that withstand extreme temperature fluctuations.
Research & Insights

Our Analysis of Gates Engine Thermostat Housings

340 Reviews Analyzed
8 Products Evaluated
6.0 Avg PM Score
3 Brands Ranked

Top 10 Gates Engine Thermostat Housings Brands on Amazon

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

  1. 01 Gates 6 (75%)
  2. 02 Apdty 1 (12.5%)
  3. 03 Modular Motorsports Racing 1 (12.5%)

What Our Analysis Found

We've carried out a comprehensive analysis of 340 reviews on Gates Engine Thermostat Housings, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select Gates Engine Thermostat Housings priced around $37.74, with top brands including and gates.

Our team of expert editors reviewed these high-quality items and handpicked the top 18 Gates Engine Thermostat Housings for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category — including and amazon.com.

We are dedicated to assisting our users in finding the right housings Products based on their needs, saving them considerable time when choosing which Gates Engine Thermostat Housings 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 18 picks at a glance — select a column to sort.

# Product Brand PM Score Rating Where to Buy
1 Gates Premium Engine Coolant Thermostat Gates 9.7 4.7 (354) Buy on Amazon
2 Gates Integrated Housing Engine Coolant Thermostat Gates 9.6 4.6 (148) Buy on Amazon
3 Gates Premium Engine Coolant Thermostat Gates 9.6 4.6 (349) Buy on Amazon
4 Gates Integrated Housing Thermostat Gates 8.6 4.5 (82) Buy on Amazon
5 Gates Integrated Housing Engine Coolant Thermostat Gates 7.8 4.5 (66) Buy on Amazon
6 Gates Integrated Housing Engine Coolant Thermostat Gates 7.1 4.3 (56) Buy on Amazon
7 Gates Integrated Housing Engine Coolant Thermostat Gates 7.1 4.0 (61) Buy on Amazon
8 Gates Integrated Housing Engine Coolant Thermostat Gates 5.6 4.7 (17) Buy on Amazon
9 Gates Integrated Housing Engine Coolant Thermostat Gates 5.5 4.1 (27) Buy on Amazon
10 Gates Engine Coolant Thermostat Gasket Gates 5.3 4.8 (10) Buy on Amazon
11 Gates Integrated Housing Engine Coolant Thermostat Gates 5.2 4.1 (22) Buy on Amazon
12 Gates Integrated Housing Engine Coolant Thermostat Gates 5.2 5.0 (3) Buy on Amazon
13 Gates Integrated Housing Engine Coolant Thermostat Gates 3.1 3.0 (1) Buy on Amazon
14 OzCoolingParts Wheel Bearing and Hub Assembly Set OzCoolingParts 0.0 0.0 Buy on Amazon
15 OzCoolingParts 3 Row Aluminum Radiator Kit OzCoolingParts 0.0 0.0 Buy on Amazon
16 OzCoolingParts Aluminum Radiator and Fan Kit for Chevy Corvette OzCoolingParts 0.0 0.0 Buy on Amazon
17 APDTY Upper Thermostat Assembly with Housing and Sensor APDTY 6.9 4.2 (54) Buy on Amazon
18 Modular Motorsports Racing Billet Inline Thermostat Housing Modular Motorsports Racing 5.0 4.5 (10) Buy on Amazon