Engines and Components Camshafts and Valvetrain

COMP Cams

COMP Cams Rocker Arm Shaft Stud Kit - Dodge Gen III HEMI

$129.95

SKU: C007 4589-KIT

In Stock
In Stock
Ships by Aug 2
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Non-Returnable Item
INSTALL DIFFICULTY
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Description

Part #: 4589-KIT

This rocker stud and nut assembly allows for improved clamping load, adding up to a more rigid, stable and high revving valve train assembly. Additionally, it saves the threads in aluminum cylinder heads, especially in race applications that see constant disassembly. The stud kit also aids during installation of shaft mount rocker systems by accurately guiding the rocker arm assembly into position. The 12 point flange nuts provide ample clearance to rocker arms for maximum lift potential while a rounded nose on top of the stud prevents cross threading of the nut during assembly. Manufactured from grade 12.9 hardware, these high-strength studs also help to prevent thread fatigue and pulling of threads in aluminum heads.

No modifications to stock rocker arms needed. Check fitment on aftermarket systems before use. Torque specs follow the factory settings. Check the service manual for the proper specification and process.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The COMP Cams 4589-KIT is a rocker arm stud kit designed for Dodge Gen III HEMI engines. It provides retention and improved clamping load for a rigid, stable valve train assembly that can handle high RPMs. The kit saves threads in aluminum heads, especially in racing applications with frequent disassembly, and guides shaft mount rockers into position during installation.

Fitment

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Specifications

BrandCOMP Cams
Part NumberC007 4589-KIT

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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