Best Square Exhaust Header Gaskets in 2026
Daisy
Last Updated: Jul 18, 2026
Daisy
Last Updated: Jul 18, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
1-7/8" Diameter Round Port; Chevy V8 - 4.8L, 5.3L, 6.0L LS2 ('99-'08), 5.7L, LS1 LS6 ('97-'08), includes Vortec, Manifold or Headers, 2/Set
Port configuration comparable to Fel-Pro 1440
Heating and cooling of the exhaust system causes header and manifold flanges to warp resulting in gaps between the head and header which Remflex exhaust gaskets seal completely due to the thickness and compressibility of the 100 percent flexible graphite
Remflex exhaust gaskets come in a standard 1/8 inch thickness and are designed to crush 50 percent allowing them to fill any pits or gaps in the flange surface up to 1/16 inch
There are no rubber binders or composite materials in Remflex exhaust gaskets so they will not shrink or harden due to time or temperature eliminating the need to go back and continually retighten your flange bolts
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| TiCon Industries | 9.82 | ✅ | ✅ | ✅ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| SS AUTOCHROME INC | 6.43 | ❌ | ❌ | ❌ |
Gasket for 4-2-1 headers
New M10 x 1.25 studs and nuts
2" (id) graphite donut gasket
Replacement for damaged or used gaskets
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Racer's Speed Shop | 9.64 | ❌ | ❌ | ❌ |
Manufactured from high-temperature steel core/graphite faced exhaust material
Expanded steel core provides stability and maximum torque retention to eliminate gasket failure
Graphite impregnated facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head
Conforms to and seals minor surface irregularities
Can be trimmed if necessary for modified port application
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Part number: 27340
Orem equivalent part number: 27340
Package Weight : 0.09 kilograms
Package Dimensions: 0.508 L x 58.42H x12.7W(centimeters)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Aluminum Reinforced Graphite Exhaust Manifold Gasket
Complete Hardware Kit for Installing Aftermarket Header to your Vehicle
Great for Replacement of Missing or Damaged Gaskets
100% Brand New
Installation Instruction is NOT Included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Fircar Store | 9.84 | ✅ | ✅ | ✅ |
🔧 【High Quality Copper】:The exhaust header collector gasket made of 2.5" solid copper 0.41" thick with impeccable durability performance, wear-resisting, anti-strike, anti-scratch, dust-proof and colorfast.without included bolts
🔧 【Wide Applicability】:This 2 1/2" Header Collector Gasket are especially designed for SBC BBC 302 350 454, and fit all 2.5 inch collector with Triangle (3 Bolt Pattern).
🔧 [Excellent Sealing Effect]: The exhaust header collector gasket uses a durable composite O-shaped design to form a tight leak-proof seal, without additional sealant, and can seal perfectly every time.
🔧 [What You Will Get]: Includes 2 x 2.5-inch exhaust header collector gaskets for easy installation and operation.Replace old or damaged header collector gasket in time for better performance.
🔧 【Aftermarket Service】:GSKMOTOR specializes in providing high-performance repair and replacement parts for various automobiles, we support 30 days returns and exchanges. If you have any questions, please feel free to contact us, we will solve it for you as soon as possible, customer satisfaction is our unremitting pursuit.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Aluminum Reinforced Graphite Exhaust Manifold Gasket
Complete Hardware Kit for Installing Aftermarket Header to your Vehicle
Great for Replacement of Missing or Damaged Gaskets
100% Brand New
Installation Instruction is NOT Included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Genuine Mr. Gasket product
Designed for performance
Made from quality materials
Easy installation
Durable and long lasting
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Matches OE form, fit, and function
Manufactured from premium materials
Quality construction for durability
Packaged in clear plastic for easy visibility and identification of all components
Application specific to ensure a correct fit for your vehicle
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| SecosAutoparts | 9.85 | ✅ | ✅ | ✅ |
Applicable models: Compatible with all LS series engines (except LS7) LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LY2 LY5 LY6 LC9 LFA LH8 LMG LS3 L98 L9H L20 L94 LZ1 L99 L96 LC8 L77 Don't forget to refer to the product description when purchasing to make sure the parameters in it match your vehicle!
Advantages: The dimensions and parameters of our products are precisely manufactured and produced according to the original accessories, accurate to the millimeter level, you can buy with confidence after referring to the description!
Installation method: The installation of this product is not complicated, you can search for relevant installation videos on the Internet, or send us a message after receiving the goods to provide you with installation tutorials and guidance programs!
Save money: Buying original parts often costs a lot of money, and sometimes you need to go to the 4S shop for repairs, which is expensive and time-consuming! In fact, for some parts, there is no difference in the quality of the original and aftermarket products, and the money you save can be used for more things!
Our commitment: SecosAutoparts has been committed to the auto parts market for more than ten years. For products purchased in our store, we promise to provide technical guidance and return and exchange services within the one-year warranty period (when there is a problem with the product)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Autocare Depot | 9.60 | ❌ | ❌ | ❌ |
Package dimensions: 11.43 cms L x 53.34 cms W x 54.61 cms H
Package quantity: 1
Product type: Auto Part
Country of Origing: United States
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
▶️ Aluminum Reinforced Graphite Exhaust Manifold Gasket
▶️ Complete Hardware Kit for Installing Aftermarket Header to your Vehicle
▶️ Great for Replacement of Missing or Damaged Gaskets
▶️ 100% Brand New
▶️ Installation Instruction is NOT Included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Aluminum Reinforced Graphite Exhaust Manifold Gasket
Complete Hardware Kit for Installing Aftermarket Header to your Vehicle
Great for Replacement of Missing or Damaged Gaskets
100% Brand New
Installation Instruction is NOT Included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Aluminum Reinforced Graphite Exhaust Manifold Gasket
Complete Hardware Kit for Installing Aftermarket Header to your Vehicle
Great for Replacement of Missing or Damaged Gaskets
100% Brand New
Installation Instruction is NOT Included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| YIYUQI | 9.88 | ✅ | ✅ | ✅ |
OEM Part Number: 12617944, 12558573, 12600530
Compatible with all LS series engines (except LS7) LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LY2 LY5 LY6 LC9 LFA LH8 LMG LS3 L98 L9H L20 L94 LZ1 L99 L96 LC8 L77
For GMC for Chevy for Pontiac for Hummer for Cadilac for Buick 1997-2020 4.8L 5.3L 5.7L 6.0L 6.2L 6.6L V8 Engines
For 1999-2002 Camaro & Firebird 2010-2013 Camaro 1999-2013 Corvette 2004-2006 Pontiac GTO 2004-2007 Cadillac CTS-V 2008-2009 Pontiac G8 2000-2013 Tahoe, for Yukon Escalade 2003-2009 H2 Hummer 2001-2013 Chevrolet Avlanche 1999-2013 Silverado & Sierra (4.8L, 5.3L, 6.0L)
Package includes: 3pcs gasket.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Dna Motoring | 5 |
| Mr. Gasket | 2 |
| Auto Dynasty | 1 |
| Bbk Perf | 1 |
| Beck/Arnley | 1 |
| Gskmotor | 1 |
| Hedman Hedders | 1 |
| Remflex | 1 |
| Secosautoparts | 1 |
| Strongthium | 1 |
We've carried out a comprehensive analysis of 1,205 reviews on exhaust header gaskets, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select exhaust header gaskets priced around $22.93, with top brands including ticon, dna motoring, gskmotor, mr. gasket, secosautoparts, remflex, bbk perf, beck/arnley and strongthium and auto dynasty
Our team of expert editors reviewed these high-quality items and handpicked the top 16 exhaust header gaskets for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category. These include ticon industries, amazon.com, fircar store, racer's speed shop, secosautoparts, ss autochrome inc and autocare depot and yiyuqi .
We are dedicated to assisting our users in finding the right gaskets Products based on their needs, saving them considerable time when choosing which exhaust header gaskets to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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