Cometic ::::: Cometic Head Gasket for GM BB Mercury Gen IV/V/VI Block 4.58 In.

Cometic Head Gasket for GM Big Block Mercury Gen IV, V & VI Blocks 4 Bolt Intake Side of Gasket 4.58 Inch

These come in varying bore sizes to fit your engine. These are also available in custom thicknesses from .027" to .120". Please call or email us for pricing and availability (typically a custom gasket can be shipped in 2-3 days).