ARP Perma-Loc Rocker Arm Adjuster - For Stamped Steel Rocker Arms - 7/16"-20 Thread HSXSM11SASPA Buick V8 / Oldsmobile V8

Buick V8 / Oldsmobile V8 / Pontiac V8

Pontiac V8

Master Cylinder Cap

Bert Clutches

ARP Perma-Loc Rocker Arm Adjuster - For Stamped Steel Rocker Arms - 7/16"-20 Thread HSXSM11SASPA Buick V8 / Oldsmobile V8A 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.