Best Remflex Exhaust Header Gaskets in 2026

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

Matches the Stock Cylinder Head Port; AMC V8 - 304('70-'79), 360('70-'93), 390('70), 401('71-'76), Dog Leg Stock Port, Manifold or Headers, 2/Set

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

2 1/2" Header Collector Gasket---- The exhaust header collector gaskets are especially designed for SBC BBC 302 350 454, and fit all 2.5 inch collector with Triangle (3 Bolt Pattern). brand new, please confirm whether the product is suitable before purchasing

High Quality Copper---- The exhaust header collector gasket is made of finest .041’’ thick solid copper with impeccable durability performance, wear-resisting, anti-strike, anti-scratch, dust-proof and colorfast

Sealing Performance---- Embossed port ridge for a perfect leak-proof seal, no additional sealant is required. No more worry about leaky header blues

3" Header Collector Gasket---- The header collector gaskets are especially designed for SBC BBC 302 350 454 383, and fit all 3 inch collector with Triangle (3 Bolt Pattern). brand new, please confirm whether the product is suitable before purchasing

High Quality Copper---- The header collector gasket is made of finest .041’’ thick solid copper with impeccable durability performance, wear-resisting, anti-strike, anti-scratch, dust-proof and colorfast

Sealing Performance---- Embossed port ridge for a perfect leak-proof seal, no additional sealant is required. No more worry about leaky header blues

2-1/2" Pipe; Universal 2-1/2” Collector Flange, 3 Bolt Holes, 3-1/32" Bolt Hole Spacing, 2/Set

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

See Part Number 6006 for 2-1/4" Pipe Flange; Mopar Exhaust Collector Gasket 2-1/2" Pipe, 2 Bolt Holes (One slotted) 3-29/32" Bolt Hole Spacing, 2/set

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

1-1/2" Diameter Round Port; Ford V10 - Triton, 6.8L ('97-'12), 1-1/2" Round Port, Manifold or Headers, 2/Set

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

See Part Number 6005 for 2-1/2" Pipe Flange; Mopar Exhaust Collector Gasket 2-1/4" Pipe, 2 Bolt Holes, 3-1/2" Bolt Hole Spacing, 2/set

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

1-13 inch width x 1-7/8 inch height Square Port; Chevy V8 - BB 396/6.5L, 402/6.6L, 427/7.0L, 454/7.4L ('65-'90), Stock Port, Manifold or Headers, 2/Set

Port configuration comparable to Fel-Pro 1410

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

1-1/8 inch width x 1-3/4 inch height D Shaped Center Ports; Pontiac V8 - 326, 350, 370, 389, 400, 421, 428, 455, Port Match to Head, Manifold or Headers, 2/Set

1-3/8 inch width x 1-13-16 inch height Oval End Ports

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

Two 1-1/2 inch width x 1-29/32 inch height Divided Center Ports; Oldsmobile V8 - 260, 307, 330, 350, 350, 400, 403, 425, 455 ('64-'90), Headers Only, 2/Set

1-7/16" wide x 1-15/16" high Square End Ports

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

1-1/4 inch width x 1-5/8 inch height Large Square Port; Ford V8 - 289-351 Windsor, Large Square Port, (Aftermarket Cylinder Heads - 2" BH Spacing), 2/Set

For use with Aftermarket Cylinder Heads with 2" Bolt Hole Spacing on each port

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

Remflex’s unique flexible graphite material has been proven for more than 30 years

4.0L (1990-1998) plus (Cherokee, Comanche and Wagoneer 1987-1990), 1(each), Heating and cooling of the exhaust system causes header and manifold flanges to warp

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

1-1/4 inch width x 2-3/32 inch height Oval Port; Ford V8 - 429 ('68-'73), 460 ('68-'87), (Except Cobra Jet) Oval Port, For Carbureted Engines, 2/Set

Not for fuel injected engines

Manifold or headers

Remflex’s unique flexible graphite material has been proven for more than 30 years

Port configuration comparable to Fel-Pro 1404/1405

Popular for aftermarket aluminum heads AFR, Dart and others

Fit type: Universal Fit

1-1/2" Round Port; Chevy V8 - 4.8L, 5.3L, 5.7L- LS1, LS6/6.0L- LS1, LS2 Vortec, 1-1/2" RP, For Weld Bead Headers, 2/Set

For use with raised weld bead headers; additional sealing material is provided around the weld bead to provide a better seal

Driver Side (Part A) Only; GM GMC truck/SUV/Hummer LS ('99-'12), Header/Manifold -to-Exhaust Pipe, Driver Side, 1(each)

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

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

1-3/4" Round Port; Chevy V8 - 396, 402, 427, 454 ('65-'90), 1-3/4" Round Port, For Raised Weld Bead Headers, 2/Set

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

For use with raised weld bead headers; additional sealing material is provided around the weld bead to provide a better seal

Both Driver Side (Part A) and Passenger Side (Part B) Gaskets; GM - GMC truck/SUV/Hummer LS ('99-'12), Header/Manifold -to-Exhaust Pipe Flange, 2 Piece Set

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

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

Stock Port; Chevy L6 - OHV 216.5 ('37-'53), 235 ('50-'63), 261 ('55-'62), One Piece, Manifold or Headers, 1 (each)

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

2 inch width x 1-7/8 inch height Irregular Shape Stock Sport; Chevy V8 - GMC BB 454/496/502 Gen. Mark (IV,V,VI),('91 and Newer), Manifold or Headers, 2/Set

For use with stock cast iron and GM Performance aluminum cylinder heads

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

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

"1-7/8 inch width x 1-5/8 inch height square port; mopar v8 - indy 440 cylinder head, 1-7/8" x 1-5/8" square port, 2/set"

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

Reflex's unique flexible graphite material has been proven for more than 30 years

Manifold or header applications

1-15/16 inch width x 2-5/32" Square Port; Ford V8 - 351 ('70-'74) Cleveland 4bbl Carb. (Includes Boss, High Output and Cobra Jet) Square Port, 2/Set

Exhaust Gaskets Pack of 2 Specially designed for SBC BBC 302 350 454 383. Reusable, no sealant required, good performance.

Copper Exhaust Gaskets Made of high quality solid copper material for maximum durability, not easy to crack.Exhaust Collector Gaskets.

exhaust gasket With two seals Excellent sealing effect, seal perfect every time for easy installation and operation.Made with top quality solid copper material.

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