Fits: Small Block, Big Block, and 90° V6 Chevy engines
Eliminates oil pump bind and spark scatter when using a distributor in an engine with resurfaced heads or decks
Made from high impact nylon to exact GM gasket specs
Kit insures leak-free operation and contains one each .030′, .060′ and .100′ shims
Distributor Housing Shim Kit. ID 1.290 i.d./1.830 o.d.