King Engine Bearings MB 547AM0.75 Main Bearing Set Toyota 18R Engine 0.75mm Undersize

The King Engine Bearings MB 547AM0.75 is a complete main bearing set engineered for Toyota 18R series engines. This set is manufactured to a 0.75mm undersize specification, designed for use during engine rebuilds where the crankshaft journals have been machined to restore a proper bearing surface.

King Engine Bearings is a globally recognized manufacturer of precision engine bearings, producing components that meet or exceed OEM tolerances. Their bearings are produced using advanced tri-metal and bi-metal alloy construction techniques, delivering excellent wear resistance, conformability, and fatigue strength under demanding operating conditions.

Key Features:

• Designed for Toyota 18R series engines
• 0.75mm undersize (AM0.75) for use with reground crankshafts
• Precision-machined to tight OEM tolerances for proper oil clearance
• High-quality bearing alloy construction for superior durability and wear resistance
• Full main bearing set included for complete crankshaft replacement
• Engineered for reliable performance in rebuilt and high-mileage engine applications

The Toyota 18R is a 1.8L SOHC inline-four engine used in various Toyota vehicles. When rebuilding this engine, selecting the correct undersize bearing is critical to achieving proper oil film thickness and long-term crankshaft durability. Always verify crankshaft journal measurements before selecting bearing size.