Racing Power Headers - 1-5/8" Primary - 2-1/2" Collector - Steel - Ceramic - SB Chevy R07C15W40 Nitrous-fed engines benefit from the

Nitrous-fed engines benefit from the included Step Retard feature

Positively locates itself on the main body of 4700(R) QFX(R) carburetors

Anodized aluminum fuel rails with laser-etched logo (EFI model) 6AN

M2 Treated

Racing Power Headers - 1-5/8" Primary - 2-1/2" Collector - Steel - Ceramic - SB Chevy R07C15W40 Nitrous-fed engines benefit from theProduct Description: Headers 1. 625 in Primary 2. 5 in Collector Steel Ceramic 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.