King Engine Bearings Chevrolet 121Ci/Ln2 134Ci +.002 (Size +0.25mm) Main Bearing Set

If you're rebuilding the engine in your 1990-1991 Chevrolet Beretta, Corsica, or Cavalier, or your 1995-2002 Cavalier, 1995-2003 S10, or 2000-2003 GMC Sonoma, this King Engine Bearings Main Bearing Set is what you need. These bearings are designed to replace your worn-out main bearings, which support the crankshaft in your engine block. This specific set is the +.002 inch (0.25mm) undersize version, meaning it's intended for crankshafts that have been machined down to compensate for wear.

King Engine Bearings uses a bimetal construction with an aluminum silicon base. This material choice helps ensure good wear resistance and proper oil film support for the crankshaft. This set is the OS/OD (Over Size/Over Diameter) version of their MB5088SI part, specifically made for engines with the 121ci or LN2 134ci displacement. Proper main bearing clearance is critical for oil pressure and engine longevity, so using a well-made bearing set like this is important for a successful rebuild.