King Engine Bearings MB 458AM1.0 AM-Series Main Bearing Set 1.0mm Undersize Mitsubishi 3.0L V6 6G72

The King Engine Bearings MB 458AM1.0 is an OE-replacement bi-metal main bearing set designed for the Mitsubishi 3.0L V6 6G72 engine. This set is supplied in a 1.0mm undersize, making it the correct choice for engine rebuilds where the crankshaft has been machined to a 1.0mm undersize specification.

Part of King's AM-Series, these bearings utilize a lead-free, aluminum-based bi-metal construction — the softest material in King's bearing lineup — engineered for reliable performance in passenger car engines operating under low to medium loads. The lead-free composite is both environmentally responsible and delivers excellent conformability and embedability during break-in.

Key Features:

• OE Replacement quality — direct substitute for factory main bearings
• Bi-metal aluminum construction — lead-free, aluminum-based material for low to medium load applications
• 1.0mm undersize — for use with crankshafts machined to 1.0mm under standard journal diameter
• Includes 4 pairs — complete main bearing set for the 6G72 V6
• Compatible with the Mitsubishi 3.0L V6 6G72 engine (SOHC 12V, SOHC 24V variants)
• Manufactured by King Engine Bearings, a bearing specialist since 1960

King Engine Bearings focuses exclusively on engine bearings, applying decades of engineering expertise to every set. Every King bearing is manufactured to precise tolerances to ensure proper oil clearance, crush, and long-term crankshaft protection during engine operation.