Take your diesel engine’s reliability and performance to the next level with the Performance Diesel Worx Street HD Rocker Arm Trunnion Set with Polishing Tool — the ultimate upgrade for one of the most overlooked components in high-performance builds.
The factory rocker arm trunnions are designed to handle stock power levels, not the increased loads from performance upgrades. When subjected to higher horsepower, the OEM trunnions can quickly become overstressed, leading to galling between the trunnion and rocker arm bushing surfaces. Once this damage begins, it can cause the rocker arm to seize, resulting in bent pushrods and potentially severe engine damage.
The Performance Diesel Worx Street HD Trunnion Set solves this problem by improving lubrication and strength throughout the rocker arm assembly. Each trunnion is engineered with enlarged oil supply holes, widened oil grooves, and additional transfer grooves to promote superior oil flow, reduce friction, and dramatically extend component life.
Precision CNC-machined from premium tool steel, theStreet HD trunnions are core-hardened, precision-ground, and nitrided for exceptional durability and wear resistance. These extra manufacturing steps ensure a part that’s stronger, longer-lasting, and more reliable than the factory design.
Each kit includes 12 upgraded trunnions and a refinishing/polishing tool, allowing you to restore worn rocker arms before installation. The result is a smoother, stronger valvetrain ready to handle the power your diesel engine was built to make.
SIDE BY SIDE PICTURE
Left: Stock 2024 Cummins Trunnion
Right: Performance Diesel Worx Street HD Trunnion
