King Engine Bearings MB3324AM1.25 Main Bearing Set Subaru - 1800cc

The King Engine Bearings MB3324AM1.25 is a complete main bearing set engineered for Subaru 1800cc engines from 1980 onward. This set is offered in a +0.25mm oversize (AM1.25) specification, making it an ideal solution for engine rebuilds where crankshaft journals have been machined undersize during resurfacing.

King Engine Bearings is a globally recognized manufacturer of precision engine bearings, supplying OEM and aftermarket applications worldwide. Their bearings are produced to exacting tolerances and feature advanced tri-metal or bi-metal construction with a steel backing, ensuring durability, reliable oil film retention, and resistance to fatigue under high operating loads.

Key Features:

• Complete main bearing set for Subaru 1800cc engines (1980 and later)
• +0.25mm oversize grind specification for use with re-machined crankshafts
• Precision-engineered to strict dimensional tolerances for consistent oil clearance
• Steel-backed construction for strength and dimensional stability
• Advanced bearing alloy formulation for excellent wear resistance and conformability
• Designed for use in engine rebuilds and performance applications

King's pMaxKote polymer coating technology (used across many of their product lines) reduces friction during cold starts and break-in periods, extending overall bearing service life. This main bearing set is a trusted choice for engine builders performing Subaru flat-four engine rebuilds requiring a 0.25mm oversize grind.