.350 Wide Needle Roller and Clip Assembly

The T and D Machine .350 Wide Needle Roller and Clip Assembly is a precision rocker arm bearing component engineered for high-performance engine applications requiring reliable valve train operation. This needle roller bearing assembly, identified as part number 03371, functions as a critical contact point in the rocker body, distributing loads across the rocker arm's pivot while minimizing friction during sustained operation.

The .350 wide needle design provides optimal surface contact for the rocker arm geometry while the integral clip assembly ensures secure retention without requiring additional fasteners. This compact bearing measures 2 x 0.6 x 2.95 inches and weighs just 0.03 lbs, making it suitable for tight engine compartment installations. The needle roller configuration offers superior load capacity compared to conventional journal bearings, critical for engines experiencing high RPM operation or aggressive valve overlap profiles where rocker acceleration forces spike significantly.

This assembly is essential for builders and machinists restoring or upgrading small-block engines, particularly where OEM rocker arm bearings show wear or where performance modifications demand improved valve train stability. T and D Machine components are standard in racing and high-output engine shops where precision bearing tolerances directly impact cam duration effectiveness and overall engine reliability. Proper bearing condition prevents rocker wear and maintains precise pushrod geometry, factors that affect combustion timing and horsepower delivery across the RPM band.