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The ARP Perma-Loc adjustable 3/8 12-point rocker arm nut kit provides adjustable 3/8-inch nuts with a 12-point profile for rocker arm applications. It’s intended as replacement or service hardware when assembling or adjusting rocker arms. Install and set according to engine builder or manufacturer procedures, using proper torque and adjustment practices to ensure reliable fastening.
ARP Perma-Loca c adjustable 3/8 12pt rocker arm nut kit
