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ARP 134-7221 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>

Picture for manufacturer ARP 134-3609 Cylinder Head Fasteners

Part Number

134-7221
5 reviews
04/30/2034 1:11 PM
Sale Price

$12.25

Estimated ship date Sunday, July 28

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Product Details

ARP 134-7221 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

0.85

Base Dia/Thread

M8 x 1.25

Base Thread Length (in)

0.600 in.

Base Thread Size

M8 x 1.25mm

Effective Stud Length (in)

1.750 in.

Guideplate Locator Shank

Yes

Notes

Machine work is required.

Quantity

Sold as a pair.

Rocker Arm Nut Thread Length (in)

0.850 in.

Rocker Arm Nut Thread Size

3/8-24 in.

Screw-In Thread Depth

0.6

Shank Dia/Thread

3/8-24

Stud Height

1.75

Everything arrived well packaged and in good order... It was shipped promptly, but hey, no accounting for the snow storm in the NW... I think UPS calls it an "act of God"... Thanks

Ordered Monday, delivered Thursday - just as promised. Best price among all reputable on-line parts dealers. Saved at least a third off the most popular dealers.

Great selection and fast shipping. Not to meantion the lowest prices anywhere on the net.

Glad you carried these items

The integration with amazon made it very easy to check out.

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