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ARP 300-8245 Perma-Loc Rocker Arm Adjuster Set Thread - 7/16-20 Pack of 16

Part of: ARP Perma-Loc Rocker Arm Adjuster Set Thread

Other options in this family: ARP 300-8243

Manufacturer

Picture for manufacturer ARP

Part Number

300-8245
19 reviews
Sale Price

$89.71

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP Perma-Loc rocker arm adjuster eliminates the constant need to re-adjust rocker arms in high-performance engines. Unlike conventional poly locks that require frequent tightening, this patented design features full heat-treated construction that prevents thread movement and maintains precise valve lash settings.

Key Features:

  • Forged from grade 8740 chrome moly steel with full heat treatment for 190,000 psi tensile strength—not just case hardened
  • CNC-machined threads cut exactly perpendicular to the adjuster bottom for even seating and 360-degree pressure distribution
  • Flush-ground bottom seats evenly on aluminum rockers; flush-machined set screw tip provides maximum contact on rocker arm stud
  • Exclusive 12-point head with shouldered stop holds wrench in position while tightening set screw with Allen wrench—no special tools required
  • Designed for aluminum rocker arms with 7/16-20 thread size, 1.200" overall length, and .550" body diameter

Manufactured in-house by ARP with precision CNC machining and superior metallurgy, these adjusters deliver permanent valve train stability for serious performance applications. Includes sixteen adjusters per package.

Products specifications

For Use with Stud Girdle

No

Minimum Rocker Slot Width (in)

0.550 in.

Outside Diameter (in)

0.550 in.

Overall Height (in)

1.200 in.

Quantity

Sold as a set of 16.

Rocker Arm Nut Style

Polylock

Rocker Arm Style

Full roller

Rocker Stud Thread Diameter

7/16-20 in.

Size

1.2 x 0.55

Thread

7/16-20

Easy to get around!

Excellent sellers. Very fast shipping.

Lowest price available, fast shipping, product was in perfect condition

Excellent

I love your prices compared to the other competitors u guys are my new parts store,Thank u

good results

Good

Great Company with awesome support!!

Wish Canada or Amazon.ca carried these anchors. Maybe you could look into that. A follow-up would be appreciated since the information does not show the weight of your item, hoping it is only 4 pounds for us old goats :)

Autoplicity always has the lowest prices and they ship extremely quickly!

The price as well as the turn time for receiving my product was great. I placed an order late Sunday evening and I have received my order by Wednesday of that week. I still can't get over how great the price was for the bike rack I ordered compared to all of the other sites out there.

This was my first time using autoplicity and I was very happy with their service. Great prices and fast shipping.

I was a little concerned at first. They advertise same-day order processing, and they said my part was in stock. However, my order took three business days (plus the weekend) to finally ship. As long as the right part arrives, I'll be happy. The price was $100 less than everywhere else, so that can't be beat.

Shipped in a fair amount of time and customer service was easy to contact.

Good prices and quick shipment

Great experience! I placed my order on Sunday and my programmer arrived on Thursday - with ground shipping. I unpacked the programmer and it functioned exactly as I had hoped. I will definitely consider purchasing from Autoplicity again!

These guys have the best prices I could find by far, for the parts I needed. I have made two purchases from them so far and am sure there will be more. They ship fast and provide tracking information.<br>

Completely amazed by this seller. I recieved the rack in just 2 days and the price was unbeatable. I'm just stoked to have finally found a bike rack worth having!!

Super quick service! Great price and I received the product the day after I ordered it.

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