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ARP 135-7121 High Performance Rocker Arm Studs 8740 Chrome Moly (2-Pack)

(Chevrolet Camaro 1967-72, Corvette 1965-74, 2006-07, Impala 1963, 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73 + 45 more models)

Part of: ARP High Performance Rocker Arm Studs Moly

Other options in this family: ARP 134-7121 ARP 134-7123 ARP 134-7124 ARP 100-7121 ARP 135-7202

Manufacturer

Picture for manufacturer ARP

Part Number

135-7121
11 reviews
Sale Price

$9.20

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

ARP High Performance Series rocker arm studs are precision-engineered to eliminate the wobble and inconsistent rocker geometry that plague inferior studs. Each ARP 135-7121 stud is manufactured to exacting tolerances with concentricity within .005" T.I.R. thread pitch to thread pitch, ensuring they install straight and true every time.

High Performance Series Construction:

  • Made from 8740 chrome moly steel forgings heat-treated to 180,000 psi tensile strength
  • Extra-large radius base provides superior resistance to flex under load
  • Precision ground tip ensures optimum adjuster seating
  • Shank under hex designed to properly locate guide plates
  • Exact lengths provide positive, consistent seating

Application: Ideal for E.T. bracket racing, limited rule oval track competition, and high-performance street applications. This kit includes 2 rocker arm studs.

Important Installation Notes: Not compatible with OEM-style self-locking nuts; must be used with ARP's patented Perma-Loc adjusters. Always verify optimal stud length for your specific application, especially when using longer-than-stock pushrods or valves, as you may need to adjust rocker arm installed height accordingly.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1965-74, 2006-07, Impala 1963, 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973, C10 Pickup 1968-80, Caprice 1966-76, El Camino 1966-75, K2500 1991-2000, Nova 1970 + 39 more models

Adjuster Thread Depth

0.85

Base Dia/Thread

7/16-14

Base Thread Length (in)

0.800 in.

Base Thread Size

7/16-14 in.

Effective Stud Length (in)

1.750 in.

Guideplate Locator Shank

No

Quantity

Sold as a pair.

Rocker Arm Nut Thread Length (in)

0.850 in.

Rocker Arm Nut Thread Size

7/16-20 in.

Screw-In Thread Depth

0.8

Shank Dia/Thread

7/16-20

Stud Height

1.75

Great cheepest price for what I needed

Ordering was easy

No

Excellent. Exactly as shown, just what I needed. Quick delivery. Great price.

Great besides 1 wheel was missing the center cap

excellent service, i had to wait a few days for the order to be processesed, but only because i ordered on Friday afternoon, but love the site!

Really good prices and fast delivery.

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

Very easy webpage to use and search for items by selected vehicle. Shipping was fast and good notification system when order has shipped. Great prices, Would use autoplicity again and would reccomend to everyone.

great price

Shipped and received in quick fashion. Item arrived as expected. Would definitely buy from again!

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