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30% Off Online Orders of Select Parts and Accessories. Enter Promo Code PEP30 in Cart

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30% Off Online Orders of Select Parts and Accessories
Receive 30% Off Your Online Purchase. Use promotional code PEP30 at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 10/27/16. Online orders scheduled for in-store pick up must be completed by closing on 10/26/16 for discount to apply.

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  • Part #: 300-8244|
  • SKU: 224697

Available tomorrow

Pay in Store Available

    • Exclusive 12 Point Head - 3/8-24 Inch Thread
    • Locking Set Screw Ground Flush With Rocker Arm Stud
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

ARP Perma-Loc Rocker Arm Adjusters - Poly Lock

ARP has the missing link in valve train reliability. A rocker arm adjuster that won't loosen! One of the more aggravating things found in many high performance engines is constantly having to re-adjust rocker arms. Until ARP introduced the patented Perma-Loc adjuster, there wasn't a "poly lock" on the market that you didn't have to continually tighten. There are several important reasons why ARP's exclusive Perma-Loc rocker arm adjusters won't loosen like others. First, the adjuster body is heat treated all the way through (not just case hardened). This eliminates the thread "movement" common to others. Secondly, the threads are machined exactly perpendicular to the bottom of the adjuster, so it seats evenly and applies pressure on a full 360 Degree circle. Lastly, the set screw is machined flush on the bottom (not pointed) so it will have optimum contact on the rocker arm stud. You'll find ARP Perma-Loc's easy to use, too. The compact 12 point head is designed to hold your wrench in position while you lock the set screw with an Allen wrench. All in all, they're the best you can buy!
  • Exclusive 12 Point Head - 3/8-24 Inch Thread
  • Locking Set Screw Ground Flush With Rocker Arm Stud
  • Rated At 190,000 PSI Tensile Strength
  • Doesn't Require Special Tools
  • Heat Treated Premium Grade A 8740 Chrome Moly Steel
  • 1.200 Inch Length; 0.600 Inch Body Diameter