King Engine Bearings MB638CP030 Main Bearing Set Undersize - 0.030

The King Engine Bearings MB638CP030 is a complete main bearing set engineered to exacting OEM and performance standards. Designed as a 0.030" (0.762mm) undersize replacement, this set is intended for engines with reground or reconditioned crankshafts where the main journals have been turned down to accommodate standard undersize bearings.

King Engine Bearings is a globally recognized manufacturer of precision engine bearings, supplying both OEM and aftermarket markets. Their bearings are produced using advanced tri-metal or bi-metal construction with tight dimensional tolerances to ensure proper oil film maintenance, load distribution, and long service life.

Key Features:

• 0.030" Undersize — designed for use with reground crankshaft main journals
• Precision-engineered to meet or exceed OEM dimensional tolerances
• High-quality bearing material construction for superior wear resistance and load capacity
• Consistent wall thickness for proper oil clearance and crankshaft support
• Complete set — includes all main bearing shells required for the application
• Corrosion-resistant overlay for extended bearing life
• Manufactured to strict quality control standards by a globally trusted OEM supplier

The MB638CP030 main bearing set is a reliable choice for engine rebuilders seeking a quality replacement that restores factory-spec crankshaft clearances in engines that have undergone crankshaft reconditioning.