Racing Power Zinc SB Chevy Circle Track Valve Cover Pair 13-RS1-B-L It has a return spring

It has a return spring and two adjustable stops

Does not include downpipes for factory manifolds or header reducers

threaded insert throttle body mounts and mounting hardware

carbureted

The new Earl's Pro-Lite 350(TM) hose is one of the lightest and most durable hoses available on the market today

Racing Power Zinc SB Chevy Circle Track Valve Cover Pair 13-RS1-B-L It has a return springProduct Description: Valve Cover Tall 3. 625 in Height Baffled Breather Tubes Steel Zinc Plated Circle Track Small Block Chevy Pair Started in 1995 and specializing in both aftermarket and OEM markets, the Racing Power Company offers more than 4,800 different parts, including valve covers, dress up kits, air cleaner assemblies, crankshaft pulleys, breathers, light assemblies, and more.