Schoenfeld Modified Long Primary 3-Step Headers - 1.625 to 1.75 to 1.875 in Primary - 3 in Collector - Black - Small Block Chevy (Pair) AIR57383 There are four built-in 8mm

There are four built-in 8mm side mount threaded fasteners (brackets not included)

it can cause costly damage to the injection pump

or potential oxygen sensor issues

has two activation wires

11 Spacers total in the set

Schoenfeld Modified Long Primary 3-Step Headers - 1.625 to 1.75 to 1.875 in Primary - 3 in Collector - Black - Small Block Chevy (Pair) AIR57383 There are four built-in 8mmProduct Description: Headers Full 1. 625 to 1. 75 to 1. 875 in Primary 3 in Collector Gaskets Hardware Included Steel Black Paint Small Block Chevy Pair Founded in 1974, Schoenfeld Headers is the largest circle track header manufacturer in the world. Schoenfeld Headers is the manufacturer of competition headers, mufflers and exhaust systems. Schoenfeld Headers listen to their customers, understanding your needs and giving you a quality product at a