ARP Perma-Loc Rocker Arm Adjuster - For Stamped Steel Rocker Arms - 3/8"-24 Thread R060002YL The MAC-1X pumper features a

The MAC-1X pumper features a single powerful motor nested within the filter to reduce overall size

Tear-Aways are 2 mil thick

Package of 3

The RaceQuip Youth single-layer SFI-1 racing suit is made from Pyrovatex® FRC material

Hardened push rods required on all applications

ARP Perma-Loc Rocker Arm Adjuster - For Stamped Steel Rocker Arms - 3/8"-24 Thread R060002YL The MAC-1X pumper features aA 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.