ARP BB Chrysler Main Bolt Kit - Fits 426 Hemi 4-Bolt 4122SMLBU An exclusive 12 point head

An exclusive 12 point head design

You can use a large even if your neck is smaller to give more room over a collar bone

6 x 7 in Base

mandrel bent

The Pro 5R filter media has been tested at 98

ARP BB Chrysler Main Bolt Kit - Fits 426 Hemi 4-Bolt 4122SMLBU An exclusive 12 point headARPs 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: Main Bolt Kit High