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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
13/16"-16 Thread Size
ARP High Performance series head bolt kits are tough
Made of Energy's Hyper-Flex(TM) performance polyurethane for added performance and durability
The mounting housing is strong and indexes for a quick connection
GM Fullsize Truck 2019-22
Schoenfeld - 1.75 to 1.875 in Primary - 3.5 in Collector - 18 Degree Head - Small Block Chevy (Pair) 3.1171R 13/16"-16 Thread SizeProduct Description: Headers 1. 75 to 1. 875 in Primary 3. 5 in Collector Gaskets Hardware Included Steel Black Paint 18 Degree Head 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