Main Bearing Set +0.25mm Toyota GR Supra 3.0L B58 11711WAA10

Engine main bearing wear in the B58 platform is a common result of extended oil change intervals or extreme thermal stress from high-performance tuning, leading to inconsistent oil pressure and crankshaft vibration. When the crankshaft journals are scored or show signs of uneven wear, professional machining is required to restore a smooth, round surface. This +0.25mm (+0.010in) oversized main bearing set is precision-engineered to accommodate a ground crankshaft while restoring the exact oil film clearance required for a high-output turbocharged engine. These bearings feature a multi-layer construction for superior fatigue resistance, ensuring a stable foundation for the crankshaft and preventing catastrophic engine seizure during high-load conditions.