ARP High Performance Series Rocker Arm Stud - 10 mm x 1.50 Base Thread - 7/16-20 in Top Thread - 1.750 in Effective Stud Length - Chromoly - Universal - Set of 16 RK-G1 This BBC marine pan is

This BBC marine pan is for Mark 4 blocks with two piece seals

there are few gauges that are more critical

The grip is a black leather and utilizes the baseball type stitch used on 1974 and later versions of the original wheel

9012 Style

ARP High Performance Series Rocker Arm Stud - 10 mm x 1.50 Base Thread - 7/16-20 in Top Thread - 1.750 in Effective Stud Length - Chromoly - Universal - Set of 16 RK-G1 This BBC marine pan isARPs 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: Rocker Arm Stud High