Vintage Series Finned Valve CoversBig Block ChevyPerimeter Bolt StyleWith Breather HoleSatin Black Finish Holley 241-302 Features:Holley's Vintage Series Big Block Chevy valve covers are the latest expansion to the Vintage Series family of aluminum dress up products featuring a classically inspired finned design and a retro-style Holley script brandmark.These valve covers are manufactured from die-cast aluminum and include cast-in oil drippers and emissions provisions punch-outs for you custom application. These were designed as a standard height BBC cover, therefore internal clearances are only enough for stock or stock-replacement valve train. Includes vintage inspired push-in rubber oil fill plugs, a PCV grommet, and baffle plates with their required mounting.