Cometic CFM-20 intake manifold gasket set for Chevrolet Gen IV big block V8 is .059" thick with 2.500" x 1.775" ports, supplied with AFR and .125" taken off the top. Built and tested to meet OEM standards, these gaskets are validated on both street and dyno applications to provide reliable sealing for heavy-duty and race-adapted intake setups on Gen IV big-block installations.

Cometic Chevy Gen IV BB V8 .059in CFM-20 Intake Mani Gasket Set-2.500in x 1.775in Ports