Main Bearing Set (0.50 mm / 0.20" Undersize) for Mazda E2200 & Kia Besta 2.2L R2 Engines // MB5158AM

High-precision Main Bearing Set specifically designed for Mazda E2200 and Kia Besta models equipped with the 2.2L R2 diesel engine series. These are 0.50 mm Undersize (Second Repair Size) bearings, cross-referenced as MB5158AM, engineered for professional engine overhauls where the crankshaft main journals have been ground to a second undersize. Manufactured from premium, high-fatigue resistant materials to ensure smooth crankshaft rotation and maintain precise oil clearance under heavy-duty commercial operations. Precision-made to meet or exceed OEM specifications, these bearings are essential for restoring the structural reliability of the rotating assembly.