ARP Perma-Loc Rocker Arm Adjuster - For Stud Girdle Applications - 7/16"-20 Thread 110027 Select proper grip range and

Select proper grip range and use with 13/64" drill bit for best results

and EFI systems that use feedback control to auto-tune

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ARP Perma-Loc Rocker Arm Adjuster - For Stud Girdle Applications - 7/16"-20 Thread 110027 Select proper grip range andA 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. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Rocker Arm Nut 7 16 20 in Thread