ARP Header Bolt Kit 12pt Mopar 5.7/6.1L Hemi H774009M with some modernization and ease-of-use

with some modernization and ease-of-use improvements for both backyard and professional builders

Filler necks are machined

095 in Wall

2015-2016 GMC Sierra 3500 HD

ARP Header Bolt Kit 12pt Mopar 5.7/6.1L Hemi H774009M with some modernization and ease-of-useARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Header Bolt 8 mm x 1. 25