King Engine Bearings MB 547AM0.25 Main Bearing Set Toyota 18R Engine

The King Engine Bearings MB 547AM0.25 is a complete main bearing set engineered for the Toyota 18R engine family. This set is offered in a 0.25mm undersize specification, making it ideal for engines that have undergone crankshaft grinding or reconditioning to restore proper clearances and extend engine life.

King Engine Bearings is a globally recognized manufacturer of precision engine bearings, supplying both OEM and aftermarket applications. Their bearings are produced to tight tolerances using advanced bi-metal and tri-metal construction techniques, ensuring reliable performance under demanding operating conditions.

Key Features:

• Complete main bearing set for the Toyota 18R engine
• 0.25mm undersize for use with reground or reconditioned crankshafts
• Precision-engineered to OEM specifications and tolerances
• Advanced bearing alloy construction for durability and wear resistance
• Designed to maintain proper oil film and clearance for optimal lubrication
• Manufactured by King Engine Bearings, a trusted global OEM and aftermarket supplier

The Toyota 18R is a 1.8L inline-four engine used in a range of Toyota vehicles and light trucks. When rebuilding or reconditioning this engine, using quality undersize main bearings like this King set ensures proper crankshaft fit, oil pressure retention, and long-term reliability. Always verify crankshaft journal dimensions prior to installation to confirm correct undersize selection.