ARP Rocker Arm Nut - 7/16-20 in Thread - 0.550 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 IH100020 Advance Curve Kit #MOR72300

Advance Curve Kit #MOR72300

Designed for the general installer and do-it-yourself customer

and a domed Holley decal can be placed on the aluminum insert or directly onto the cap base

Bag / Chains / Gloves / Shackle / Pulley Block / Strap

Chevrolet: Impala 69 - 72 5

ARP Rocker Arm Nut - 7/16-20 in Thread - 0.550 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 IH100020 Advance Curve Kit #MOR72300A rocker arm adjuster that doesn't require special tools and won't work loose. Threads on the heat treated Perma Loc Adjusters are machined exactly perpendicular to the adjuster bottom. a set screw is also machined flush on the bottom. All of these features help eliminate setting valve lash on a regular basis. ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline.