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ARP 134-7121 Rocker Arm Studs

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>

Part Number

134-7121
03/05/2034 7:44 AM
Sale Price

$9.20

In Stock (10+)

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Usually delivered within 2 days

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Product Details

ARP 134-7121 Rocker Arm Studs

Rocker Arm Studs
High Performance Series
2Pieces

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact designed to provide positive seating every time. An extra-large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models.

NOTE: Not to be used with OEM-style, self-locking nuts. To be used with ARPs patented Perma-Loc adjusters

HIGH PERFORMANCE SERIES
Made of 8740 chrome moly forgings and heat-treated to 180,000 psi. Excellent for E.T. Bracket Racing, limited rule oval track
competition and street use. Tip ground flush for optimum adjuster seating.

PRO SERIES
Designed for competition applications, ARPs Pro Series rocker arm studs are made of premium grade 8740 chrome moly steel and heat-treated to a tensile strength of 200,000 psi.

IMPORTANT TECH NOTE
It is highly advisable to determine what the optimum rocker arm stud length is for your particular application. This is especially true when long pushrods and valves are employed you should raise the installed height of the rocker arm to compensate for the longer-than-stock components.

Products specifications

Adjuster Thread Depth

0.8

Base Dia/Thread

7/16-14

Base Thread Length (in)

0.700 in.

Base Thread Size

7/16-14 in.

Effective Stud Length (in)

1.750 in.

Guideplate Locator Shank

Yes

Quantity

Sold as a pair.

Rocker Arm Nut Thread Length (in)

0.800 in.

Rocker Arm Nut Thread Size

3/8-24 in.

Screw-In Thread Depth

0.7

Shank Dia/Thread

3/8-24

Stud Height

1.75

Great price

best price and swift delivery.

Thank you, easy!!

Hope they fit my FLD 120,I have two trucks

Fast shipping and the product met all of my expectations.

Felt like I got the best pricing on this product A+

as described

I'm not going to comment on a part until I've got it installed and road tested. Delivery is too soon for this survey. You should wait a week before sending.

first time so far so good

Not only was our item cheaper, it arrived quickly. Will def. purchase from Autoplicity again! Thanks!

Great price for the item. Both internet and phone conversations were quick and knowledgeable.

Not only did they have an great price on my part, and reasonable shipping charges, they shipped it right away.<br>I know I will be checking them for future parts.

Product received as described. Fast shipping! I will definitely purchase from Autoplicity again.

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Prices were good and the order shipped promptly. The email notice of shipment was a little late. It came after the order had arrived.

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Excellent! Order some spark plugs from here and they got here in 3 days! Wow!

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