Description
Supercharger base gasket to manifold. Made in the USA by JB Performance. Fits Holley/B&M/Weiand/Mercruiser 256. Will not swell with different fuel types. It also works very well with insulating against the heat soak from the supercharger.

142/144 base gasket
Holley, Weiand, B&M Supercharger gear case cover gasket 