ARP: Perma-Loc® Rocker Arm Adjusters
Readjusting the locker arms on your performance engine just got a lot less irritating. ARP’s patented Perma-Loc® adjuster is the first “poly lock” on the market that you don’t have to continually tighten. Perma-Loc® achieves this feat in a few ways. First, the adjuster body is heat-treated all the way through—not just case-hardened—eliminating the thread […]
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