King Engine Bearings MB5403AM0.75 Bi-Metal Main Bearing Set Mitsubishi - 4G63/T 4G64 0.75mm

The King Engine Bearings MB5403AM0.75 is a complete bi-metal main bearing set engineered for Mitsubishi 4G63, 4G63T, and 4G64 engines. This set is supplied at a +0.75mm undersize, making it ideal for engines with reground crankshafts requiring additional material removal.

Constructed using King's standard AM-Series bi-metal aluminum material, equivalent to SAE-783, this bearing set is well-suited for low to medium load passenger car engines. The aluminum-based construction is the softest bi-metal in King's product range, offering excellent embeddability — allowing macro-particles to embed rather than scratch crank journals or damage bearing overlays.

Key Features:

• AM-Series Bi-Metal Construction — Standard aluminum-based material equivalent to SAE-783 for low and medium load applications
• +0.75mm Undersize — Designed for reground crankshaft journals requiring 0.75mm material removal
• Bull's Eye Tolerance™ Technology — Precision wall thickness controlled to within ±0.0001" for consistent oil clearance
• Lead-Free Material — Environmentally responsible and user-safe construction
• Superior Embeddability — Reduces crank journal scratching and protects bearing overlays
• Complete Set — Includes 5 pairs of main bearing shells

King Engine Bearings has been an industry leader since 1960, producing precision engine bearings for automotive, marine, aviation, and standby power applications. Every King bearing is manufactured to the highest quality standards, making this set a reliable OE-replacement choice for Mitsubishi 4G-series engine rebuilds.