Clevite Chevrolet 4 121 1987-89 Vin Code 1 Main Bearing Set

This listing is for a Clevite MS1704A main bearing set. These bearings are a crucial part of your engine's rotating assembly, supporting the crankshaft and ensuring it spins smoothly within the engine block. When you're rebuilding an engine or addressing bottom-end noise, a fresh set of main bearings is essential for proper oil clearance and long-term reliability.

Clevite bearings are a popular choice for engine work because they offer a well-built component at a fair price. This set is designed to meet the original equipment specifications for a range of GM vehicles from the late 80s through the late 90s, including popular models like the Chevrolet Cavalier, Buick Century, and Pontiac Sunfire. Proper installation, including ensuring correct oil clearances and using a quality assembly lube, is key to getting the most out of these bearings.