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Engines and Components› Camshafts and Valvetrain
COMP Cams
COMP Cams Rocker Arm Shaft Stud Kit - Dodge Gen III HEMI
SKU: C007 4589-KIT
Advanced — 4+ hours
Overview
Show original supplier 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.
Vehicle Symptoms
- Valvetrain noise at high RPM
- Inconsistent valve timing under load
- Thread fatigue in aluminum cylinder heads
- Rocking or unstable rocker arm movement
- Difficulty maintaining valve lash during racing
Relevant Conversations
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- Dodge HEMI rocker arm stud upgrade for racing
- How to prevent thread pull in aluminum heads HEMI
- Best rocker stud kit for 5.7 HEMI high rev
- HEMI valvetrain instability after cam swap
- COMP Cams vs stock rocker studs HEMI
- Installing rocker arm studs on Gen III HEMI
- HEMI rocker arm stud kit for shaft mount rockers
- Dodge HEMI valvetrain upgrade for track use
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | COMP Cams |
| Part Number | C007 4589-KIT |
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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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