Muscle Series Valve Covers for small block Chevy engines-Black Finish - 241-135 crew-cab Increases performance by eliminating a

Increases performance by eliminating a common boost leak

BLC-140-SS2I

Alows The Use of Metering Jets

4 V8 2003 - 2005 Ford F-250 Super Duty 363/6 V8 2011 - 2012 Ford F-150 Harley-Davidson Edition 379/6

1979-1981 Chrysler New Yorker

Muscle Series Valve Covers for small block Chevy engines-Black Finish - 241-135 crew-cab Increases performance by eliminating aOverview: Holley is pleased to introduce their Muscle Series Small Block Chevy valve covers inspired by 1970's era GM factory L82 LT1 Z28 equipped engines. These valve covers are a continuation of Holley's Vintage Series valve cover line featuring a classic finned design and retro styling cues. Each set consists of one valve cover with a twist in oil fill knockout (oil fill cap included) and one with a recessed area to place an adhesive backed Holley