Needle Bearing - Rocker Body SCE or J 107

The T and D Machine Needle Bearing – Rocker Body SCE or J 107 (Part No. 0415) is a precision needle roller bearing engineered for high-performance rocker arm assemblies. This single-unit replacement bearing is designed to restore or upgrade factory rocker body applications where precision needle roller support is critical to valve train geometry and longevity.

Needle roller bearings deliver superior load distribution across a larger surface area compared to traditional ball bearings, reducing friction and distributing stress more evenly across the rocker body contact surfaces. This design minimizes wear on high-lift, high-rpm valve trains where rocker arm deflection and contact stress accelerate degradation of factory bronze or worn bearing surfaces. The compact form factor—0.7 x 0.4 x 0.75 inches and just 0.02 lbs—ensures a direct fit without modification to standard SCE and J 107 rocker body platforms.

This bearing replacement is critical for engine builders, machine shops, and performance enthusiasts restoring or upgrading small-block and big-block platforms that rely on T and D Machine rocker systems. It applies across carburetor and fuel-injected engines, naturally aspirated and forced-induction builds, and competition applications where consistent valve lift and rocker arm stability directly impact combustion consistency and power output. Operators running high-lift camshafts or extended rpm ranges benefit most from the needle bearing's capacity to reduce rocker flex and maintain precise valve timing geometry under sustained load.

T and D Machine parts are industry-standard for serious engine work, and this needle bearing is a direct OEM replacement for existing rocker body assemblies. Stock a spare when rebuilding or upgrading your valve train to ensure parts availability and consistent quality across multiple rebuild cycles.