King Engine Bearings MB 506AM1.5 Main Bearing Set Toyota 22R 1.50mm Oversize

The King Engine Bearings MB 506AM1.5 is a 1.50mm oversized crankshaft main bearing set designed for the Toyota 22R engine. Built using King's proven bi-metal aluminum-based construction (equivalent to SAE-783), this set delivers reliable OE-replacement performance for low to medium load applications including street and marine use.

King Engine Bearings has been a trusted name in precision engine components since 1960, offering one of the most comprehensive bearing catalogs in the industry. Their AM-series bearings are engineered for superior embedability, allowing micro-particles to embed into the bearing surface rather than scoring the crankshaft journal—extending engine life during rebuild or engine swap projects.

Key Features:

• 1.50mm oversized bore — engineered for crankshafts that have been ground 1.50mm undersize
• Bi-metal aluminum-base construction — equivalent to SAE-783, King's softest bi-metal material for optimized conformability
• Lead-free bearing material — prioritizes environmental safety without sacrificing performance
• Complete main bearing set — includes all main bearing pairs for the Toyota 22R engine
• OE-replacement quality — manufactured to tight tolerances for proper oil film clearance
• Suitable for street and marine applications with low to medium engine loads

The MB 506AM series is available in standard and multiple oversize options to accommodate crankshafts at various stages of wear or machining. Always verify crankshaft journal dimensions before selecting bearing size. MPN: MB 506AM1.5.