ARP Stainless Steel Bolt Kit - 6 Point (5) 5/16-18 x 1.250 Engine Mount Shim Cylinder Head Porting Kit

Cylinder Head Porting Kit

Fits Bell M

Stud Girdle

Simpson’s top concern is your safety

And Extreme Tuning

ARP Stainless Steel Bolt Kit - 6 Point (5) 5/16-18 x 1.250 Engine Mount Shim Cylinder Head Porting KitARPs 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: Bolt 5 16 18 in Thread 1.