King Engine Bearings Chevrolet 121Ci/Ln2 134Ci Housing Bore +.002 (Size +0.75mm) Main Bearing Set

This is a main bearing set from King Engine Bearings, designed for Chevrolet 121ci and LN2 134ci engines. You get the main bearings needed for an engine rebuild or repair, specifically sized at +.002 inch Oversize/Overdiameter. These bearings are built with a bimetal construction, featuring an aluminum silicon base, which helps them handle the demands of engine operation.

This particular set is an Oversize/Overdiameter version of the MB5088SI bearing, meaning it's intended for applications where the housing bore has been machined to +.002 inches larger than stock. This sizing is crucial when rebuilding an engine that has had its main bearing journals or housings machined to correct for wear or to achieve a specific clearance. The bimetal construction offers a good balance of strength and conformability, important for maintaining oil film and reducing friction between the crankshaft and the engine block.