King Engine Bearings Cummins 6Bt/6Bta/6Btaa (Size +0.25mm) Main Bearing Set

This is a main bearing set from King Engine Bearings, specifically sized at 0.25mm undersize for Cummins 6BT, 6BTA, and 6BTAA engines. These bearings are constructed with a bimetal design, featuring an aluminum silicon base, which is a common and reliable material for engine bearings.

When you're rebuilding or repairing the bottom end of your Cummins engine, main bearings are critical. They sit between the crankshaft and the engine block, supporting the crankshaft and allowing it to rotate smoothly while handling significant loads. This set is designed to be 0.25mm undersize, which is important if your crankshaft has been machined to a smaller diameter during a rebuild to clean up wear or damage. Using the correct undersize bearing ensures proper oil clearance, which is vital for oil pressure and the longevity of your engine.