Moroso Valve Cover Breathers 2 Pack GM COPO Replacements 42031BL These round case mufflers are

These round case mufflers are five-pounds lighter than competing "quiet" race mufflers and feature a 6

Increases power and MPG

Rubber Cap

1984-1984 Buick Regal

Moroso Valve Cover Breathers 2 Pack GM COPO Replacements 42031BL These round case mufflers areProduct Description: Breather Screw In Round Aluminum Polished GM COPO Replacement Pair Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street performance applications. Moroso manufactures over 4000 products, from oil pans and oiling systems, to ignition wire, ignition components, valve covers, fuel system equipment, air cleaners, hard core racing tools, chassis and suspension equipment