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ARP 300-8248 Rocker Arm Nuts

Manufacturer

ARP

<p>Today, ARP&rsquo;s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.</p>

Picture for manufacturer ARP 134-6005 Cylinder Head Fasteners

Part Number

300-8248
8 reviews
04/19/2034 2:29 AM
Sale Price

$238.01

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Product Details

ARP 300-8248 Rocker Arm Nuts

Stud Girdle
16Pieces

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 wasnt a poly lock on the market that you didnt have to continually tighten.

There are several important reasons why ARPs exclusive Perma-Loc rocker arm adjusters wont 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 circle. Lastly, the set screw is machined flush on the bottom (not pointed) so it will have optimum contact on the rocker arm stud.

Youll find ARP Perma-Locs 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.

Features

  • 12-point head with special shouldered stop to hold wrench. Eliminates need for special adjusting tools.
  • Forged in-house from 8740 alloy chrome moly steel and heat- treated throughout (not simply case hardened, as others are).
  • Bottom flush-ground perpendicular to threads.
  • Threads are precision CNC-machined exactly perpendicular to the bottom of adjuster to ensure an optimum seat and even pressure.
  • Set screw has flush-machined tip for optimum contact and seating on stud.
  • Threads machined for maximum engagement.

Products specifications

Body

1.485

Diamater

.750

For Use with Stud Girdle

Yes

Length

2.615

Outside Diameter (in)

0.750 in.

Overall Height (in)

2.615 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.

Shank

.600

Thread

7/16-20

Very pleased with my purchase and Autoplicity. Got the best price on the internet and received it very quickly. Product arrived just as discribed. I highly recommend Autoplicity for your on-line shopping needs.

Fast Happy

I was pleasantly surprised to received my order the following day.With ground shipping I was hoping to get it in 4 days to 6 days but this is amazing.You guys are great, thank you.

Awsome service and prices,Thanks alot

Great to deal with both online and over the phone. Buy with confidence.

I ordered new leaf springs for my Jeep Cherokee. Its already headed out to me. Ordering was nice and easy. I'll post more once i get it.

I was a bit concerned buying from a online retailer I had not done business with before, but Autoplicity is now on my list of preferred vendors. I was sure there would be some problem, as the part I ordered was $73 cheaper than anywhere else online (too good to be true). Well, the part arrived super fast, and was exactly as I ordered. I did not hear from them immediately after ordering, but received confirmation and tracking info when the item shipped, which was two days after ordering. All in all, a great, money saving experience.<br><br>Update:<br>While I am still pleased with the service I received, I find it odd that Autoplicity emailed me and offered me a refund of $5 for writing a review. It has been a couple of weeks since I posted my review, and I have yet to see any credits on my credit card.

I found great prices and they shipped immediately. Best deal online.

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