King Engine Bearings MB 535AM1.25 Main Bearing Set for Toyota 2A 3A 4A Oversize +1.25mm

The King Engine Bearings MB 535AM1.25 is an OE-replacement crankshaft main bearing set designed for Toyota 2A, 3A, and 4A series engines. This set is supplied in a +1.25mm oversize to accommodate reground or worn crankshafts requiring material removal during engine rebuilds.

Built on King's AM Series bi-metal construction, these bearings use an aluminum-based material — the softest bi-metal in King's lineup — making them ideally suited for passenger car engines operating under low to medium loads. The aluminum alloy formulation is lead-free, prioritizing environmental responsibility without compromising durability or performance.

Key Features:

• AM Series bi-metal design — aluminum-based material equivalent to SAE-783 for reliable OE replacement performance
• +1.25mm oversize — engineered for use with reground crankshafts
• Lead-free construction — environmentally responsible material formulation
• Precision-finished wall thickness — manufactured to tight tolerances for consistent oil clearance
• Compatible with Toyota 2A, 3A, and 4A engine families

King Engine Bearings has specialized exclusively in engine bearings since 1960, developing an extensive catalog spanning automotive, light and heavy-duty truck, marine, aviation, and standby power applications. Every King bearing is manufactured to exacting standards, ensuring proper fit and reliable performance throughout the engine's service life.