Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
Cometic MLX head gasket for Chevrolet Gen‑1 Small Block V8, 4.200in bore, .040in compressed thickness for 18/23 degree round‑bore heads. MLX uses HP shim technology to increase clamp load around the combustion chamber and an integrated stopper layer for improved combustion sealing. Embossed outer layers coated with Viton provide heat resistance and surface conformity while limiting bore distortion for stronger sealing on open‑deck blocks.
Cometic Chevy Gen-1 Small Block V8 .040in MLX Cylinder Head Gasket - 4.200in Bores - Round Bore
