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ARP 100-7221 High Performance Rocker Arm Studs 8740 Chrome Moly

Part of: ARP High Performance Rocker Arm Studs Moly

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

Manufacturer

Picture for manufacturer ARP

Part Number

100-7221
6 reviews
Sale Price

$11.52

Estimated ship date Tuesday, November 24

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Live-in-stock inventory

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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 inconsistent rocker geometry caused by wobbling studs during installation. Each stud is manufactured to exacting tolerances with concentricity within .005" T.I.R. (Total Indicator Reading) from thread pitch to thread pitch, ensuring they thread in straight and true every time.

Key Features:

  • Manufactured from 8740 chrome moly steel forgings
  • Heat-treated to 180,000 psi tensile strength
  • Precision concentricity within .005" T.I.R. for consistent rocker geometry
  • Exact lengths designed for positive seating every installation
  • Extra-large radius base provides superior resistance to flex
  • Tip ground flush for optimum adjuster seating
  • 2-piece set

Applications: Ideal for E.T. bracket racing, limited rule oval track competition, and high-performance street applications.

Important Installation Notes: These studs are not compatible with OEM-style self-locking nuts and must be used with ARP's patented Perma-Loc adjusters. It is highly advisable to determine the optimum rocker arm stud length for your specific application, especially when using longer-than-stock pushrods and valves, as you may need to adjust the installed height of the rocker arm to compensate.

Products specifications

Adjuster Thread Depth

0.58

Base Dia/Thread

M10 x 1.50

Base Thread Length (in)

0.800 in.

Base Thread Size

M10 x 1.50mm

Effective Stud Length (in)

2.386 in.

Guideplate Locator Shank

No

Notes

Fits Chevrolet 4.3L V6 Vortec cylinder heads.

Quantity

Sold as a pair.

Rocker Arm Nut Thread Length (in)

0.580 in.

Rocker Arm Nut Thread Size

3/8-24 in.

Screw-In Thread Depth

0.8

Shank Dia/Thread

3/8-24

Stud Height

1.595

Very fast shipping, received it Monday when I ordered it on Thursday. Thanks!

Ordered a Flex-a-lite 420 dual shrouded fan on Wednesday night and had it in my hands saturday afternoon! Great price and prompt shipping.

best price online. fast shipping and wright part. I recommend this site to anyone!

Happy with the purchase! The lowest price and fast shipment.

Best price online for an Injen intake. Arrived in a week. Appreciated the "Item shipped" email with tracking number!

I ordered a water pump from them and that Amazon was advertising as a Chrome pump. When I discovered it was not chrome, I asked to cancel the order which was prior to shipping notification. I was told by customer service it had already been sent and I would have to wait until the item was sent for a return to be processed. The return was sent back and all money was credited to my account as promised.

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