Doug's Headers Full Length Headers 1-3/4" Primary 3" Diameter Collector Steel - Ceramic - BB Chevy H77603FS Choose from two sizes

Choose from two sizes

-10 and -12

The holders have a 5/8" male RH thread and a 3/8" hole

square tubing or flat plate

Works with a M-84D standard volume truck flange style pickup oil pump or M-84DHV high volume truck flange style pickup oil pump

Doug's Headers Full Length Headers 1-3/4" Primary 3" Diameter Collector Steel - Ceramic - BB Chevy H77603FS Choose from two sizesProduct Description: Headers Full Length 1. 75 in Primary 3 in Collector Steel Ceramic Big Block Chevy Various GM Applications Dougs Headers, the most respected name in the header industry since the 60s, began in 1958 as a small muffler shop in East Los Angeles, California. Every Dougs header comes with all the necessary mounting hardware, collector reducers or connector pipes, premium gaskets and detailed installation instruction sheets. Our extra