Remflex Exhaust Gaskets for Mopar V8 Square-Port — Set of 2, Flexible Graphite 1/8"

Remflex 6002 is a pair of flexible graphite exhaust gaskets engineered to seal square-port Mopar V8 manifolds and headers reliably without shrinkage or heat-related failure.

These Remflex 6002 gaskets are designed for classic Mopar V8 engines including 361, 383, 400, 413, 426 Wedge and 440 applications across the model years listed. Made from a flexible graphite compound used in demanding industrial environments for decades, the gaskets compress to fill flange irregularities and resist the high temperatures found in exhaust systems far better than traditional composite or rubber-bound parts.

What engines and years will these gaskets fit?

These gaskets fit square-port Mopar V8 applications where the flange opening measures 1-7/8" by 1-3/8". The listed fitment covers multiple vintage engines and model-year ranges commonly found in restorations and performance builds.

• 361: 1957–1967
• 383: 1959–1971 (Jensen 1970–1971)
• 400: 1972–1980
• 413: 1959–1965
• 426 Wedge: 1963–1965
• 440: 1966–1980 (Jensen 1972–1976)

How does Remflex material perform compared to conventional gaskets?

Remflex uses a flexible graphite construction free of rubber binders or composite fillers, so it stays stable under extreme heat without shrinking or hardening. The material is proven in industrial service at very high temperatures, and in automotive use it compresses to compensate for flange imperfections, reducing the need for repeated retorquing.

• Standard thickness: 1/8"; designed to crush about 50%
• Fills surface pits up to 1/16" for a consistent seal
• No rubber binders means less long-term deformation or shrinkage

Can I reuse these gaskets or apply sealant with them?

Remflex recommends treating these gaskets as single-use components to ensure an uncompromised seal; while some users have reported reuse, reliable sealing is achieved with new gaskets. Do not apply any sealant: most sealants burn away and can create gaps that lead to leaks, while Remflex gaskets are rated to withstand temperatures that exceed typical sealant performance.

• Sold as a set of two gaskets for manifold/header flanges
• Do not use adhesives, RTV, or other sealants
• Replace gaskets whenever flange surfaces are disturbed

What installation tips and torque guidance should I follow?

Because Remflex gaskets are designed to crush and conform, the recommended bolt torque is lower than many factory specifications; specific torque guidance is printed on each package. Proper installation includes clean, flat flange faces and progressive, even bolt tightening to the suggested torque to achieve a uniform crush and avoid distortion.

• Clean mating surfaces thoroughly before installation
• Tighten bolts evenly in a crisscross pattern to the package torque value
• Inspect flanges for warpage or deep damage and address as needed

Who is this for? The Remflex 6002 gaskets suit classic Mopar owners, restorers, and performance tuners who need a high-temperature, stable exhaust seal for square-port V8 manifolds or headers. If you value durable materials that resist heat-related shrinkage and want a gasket that conforms to imperfect flanges for dependable sealing without aftermarket sealants, this set is designed for your project.