SCE Copper Header Gaskets - 409 Chevy H77715FXXL Features:1/4" NPT Supply and Return

Features:1/4" NPT Supply and Return Line

3 degrees and 4 degrees module and must be used with an MSD 6

1984-1991 Mercury Grand Marquis

The original Holley 0-4412 has powered thousands of racers to the winners' circle

1971-1977 GMC Sprint

SCE Copper Header Gaskets - 409 Chevy H77715FXXL Features:1/4" NPT Supply and ReturnProduct Description: Exhaust Header Manifold Gasket Pro Copper Stock Port Copper GM W Series Pair SCE Gaskets specializes in gaskets for nearly every part of the engine that requires a gasket. They offer a variety of different materials for a large selection of applications. SCE has raised the bar for cylinder head sealing performance and consistency. Our new Gas Stopper enhancement to MLS Spartan head gaskets is an example of superior design, tooling