Holley Chev LS Rocker Cover Bolt Kits # HO561-134 Cylinder Head They feature a built-in internal/external

They feature a built-in internal/external adjustable bypass

Edelbrock Universal EFI Sump Fuel Systems

They hold the gasket in place

Hood Pin Style:

Holley Chev LS Rocker Cover Bolt Kits # HO561-134 Cylinder Head They feature a built-in internal/externalHolley Chev LS Rocker Cover Bolt Kits # HO561 134 LS Valve Cover Bolt Kit, Polished, Aluminum, Hex Head, 6mm x 1. 0, Chevy, Tall Holley LS Cover, Set of 8 Valve Cover Fastener Style: Bolt Fastener Color: Polished Fastener Material: Aluminum Fastener Head Style: Hex head Thread Size: M6 x 1. 0 Washers Included: Yes Hold Down Tabs Included: No Quantity: Sold as a set of 8. Notes: For use with tall Holley LS valve covers only. Fits applications with