PRW Industries GM LS-Series Rocker Arm Shaft Trunnion Upgrade Kit 1213462

Upgrade the valvetrain of your GM LS-Series engine with the PRW Industries Rocker Arm Shaft Trunnion Upgrade Kit, part number 1213462. Designed as a direct-focused improvement for LS applications, this kit replaces the original rocker arm trunnion components with durable chromoly hardware engineered to support demanding street, performance, and competition use.
The chromoly rocker trunnion design provides increased strength and improved durability compared with standard factory components. By reinforcing this critical rocker arm connection point, the kit helps maintain stable valvetrain operation under higher spring pressures and elevated engine speeds. It is suitable for builders seeking greater confidence in their GM LS-Series valvetrain without changing the overall rocker arm arrangement.
This PRW Industries kit includes components for all 16 rocker arm positions, providing a complete upgrade solution for the engine. The OE-style LS application makes installation straightforward when used with compatible factory-style rocker arms and related valvetrain components. Verify rocker arm, cylinder head, and engine compatibility before installation, and follow the manufacturer’s recommended assembly procedures and torque specifications.
Whether used during a performance rebuild, valvetrain service, or preventive upgrade, the PRW Industries 1213462 Rocker Arm Shaft Trunnion Upgrade Kit delivers a practical strength enhancement for GM LS-Series engines. The kit is not air restricted and does not require truck freight shipping.

Features:

• Brand: PRW Industries

• Part Number: 1213462

• Application: GM LS-Series engines

• Product Type: Rocker arm shaft trunnion upgrade kit

• Material: Chromoly

• Quantity: Complete set for 16 rocker arm positions

• Design: GM OE-style LS rocker trunnion upgrade

• Use: Supports enhanced valvetrain durability for street and performance applications

• Shipping Classification: Not air restricted and not truck freight only