King Engine Bearings MB 506AM1.0 Main Bearing Set for Toyota 22R 21R - 1.0mm Oversized

The King Engine Bearings MB 506AM1.0 is a 1.0mm oversized crankshaft main bearing set designed as a precision OE replacement for the Toyota 22R (2.4L) and 21R (2.0L) engines. This set includes 5 pairs of bimetal bearings constructed with King's aluminum-based bi-metal material, delivering reliable performance for passenger car and light truck engines operating under low to medium loads.

King's AM Series uses a standard aluminum-based material equivalent to SAE-783 — the softest bi-metal in King's lineup — making it an excellent choice for stock or mildly driven engines where OE-spec durability and proper oil film retention are the priority. The 1.0mm oversize designation makes this set ideal for use with reground crankshafts that require undersize bearing material to restore proper journal clearance.

Key Features:

• Bimetal construction with aluminum-based material (SAE-783 equivalent)
• 1.0mm oversize for use with reground crankshafts
• Includes 5 pairs — full main bearing set
• OE replacement-grade for low to medium load applications
• Lead-free bearing material for environmental compliance
• Manufactured by King Engine Bearings, a specialist bearing supplier since 1960

King Engine Bearings has been producing high-quality engine bearings since 1960 across a broad range of applications including automotive, light and heavy-duty trucks, marine, aviation, and standby power engines. Every King bearing is engineered to meet or exceed OE specifications for a reliable, long-lasting rebuild.