COMP Cams 500675803 LS-Type Retro-Fit Oiling Style Rocker Arm Trunnion Upgrade Kit

The COMP Cams 500675803 is an LS-Type Retro-Fit Oiling Style Rocker Arm Trunnion upgrade kit designed to replace the factory pressed-in trunnion found in GM LS-series rocker arms. The stock LS rocker arm trunnion is a well-known weak point in these engines, prone to premature wear, needle bearing failure, and eventual rocker arm collapse — especially under high-RPM or high-lift camshaft applications. This COMP Cams trunnion kit addresses that failure point directly with a superior, serviceable design.

Key Features:

• Retro-fit oiling style trunnion designed specifically for GM LS-type rocker arms
• Replaces the factory pressed-in trunnion with a more robust, serviceable unit
• Enhanced needle bearing retention for improved durability under high-performance conditions
• Compatible with high-lift camshaft applications where stock trunnions are prone to failure
• Precision-machined to OEM dimensions for drop-in fitment
• Includes trunnion, needle bearings, and retaining hardware as required for installation

The 500675803 trunnion upgrade is an essential reliability improvement for any LS engine build, from mild street performance to aggressive track use. Upgrading the rocker arm trunnion is widely recommended as a preventative measure during any camshaft swap or top-end engine build on LS-platform engines.