ARP Rocker Arm Stud Kits

Multiple Chevrolet Fitments

Part #: 135-7121

Overview

The ARP Rocker Arm Stud Kit is a high-performance upgrade designed for Chevrolet engines used in racing, oval track competition, or street applications. Crafted from premium 8740 chromoly steel and heat-treated to a tensile strength of 180,000 psi, these studs are engineered to withstand the rigors of high-stress engine environments. They help maintain optimal rocker arm geometry, ensuring consistent valve operation and improved durability. Whether you're building a race engine or enhancing your street setup, these studs provide a reliable foundation for your valvetrain components, supporting precise operation and long-term performance.

Key Features

Designed for strength and stability, the ARP Rocker Arm Stud Kit features:

• Made from 8740 chromoly steel for exceptional toughness and fatigue resistance
• Heat-treated to 180,000 psi tensile strength for maximum durability
• Concentric within .005 T.I.R. thread pitch to thread pitch for precise fitment
• Extra-large radius base to resist flex and provide positive seating
• Engineered for consistent rocker geometry and reliable operation
• Suitable for ET bracket racing, limited rule oval track, and street use
• Designed to withstand high-stress conditions and maintain performance

Construction & Design

The studs are machined from high-quality chromoly steel, featuring a precise thread pitch and an extra-large radius base. This design enhances resistance to flex and ensures a secure, positive seat for the rocker arms, contributing to stable valve operation under demanding conditions.

Installation & Fitment

Installation requires proper torque specifications and verification against vehicle-specific requirements. Fitment should be confirmed with the part number and vehicle application details to ensure compatibility.

What’s Included

The package includes a set of rocker arm studs designed for Chevrolet engines, providing a durable and reliable upgrade for high-performance applications.

Ideal For

This kit is ideal for engine builders, racers, and enthusiasts seeking a robust, high-quality rocker arm stud solution to support aggressive cam profiles and high-rpm operation, ensuring consistent valve timing and engine reliability.