Schoenfeld - 1.625 to 1.75 in Primary - 3 in Collector - Small Block Chevy (Pair) 1101V-3 NGK 2007 GMC Sierra 1500 HD

2007 GMC Sierra 1500 HD Classic

Heavy-duty CNC center adjuster

2 port regulators feature a 10 AN O-ring inlet/outlet and return

340 Stealth Gen 2

Schoenfeld - 1.625 to 1.75 in Primary - 3 in Collector - Small Block Chevy (Pair) 1101V-3 NGK 2007 GMC Sierra 1500 HDSchoenfeld Headers 1. 625 to 1. 75 in Primary 3 in Collector Small Block Chevy (Pair) Product Description: Headers 1. 625 to 1. 75 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