King Engine Bearings MB3324AM1.0 Main Bearing Set Subaru - 1800cc

The King Engine Bearings MB3324AM1.0 is a complete main bearing set engineered for Subaru 1800cc engines from 1980 onward. Manufactured by King Engine Bearings — a globally recognized leader in precision engine bearing production — this set is produced to exacting tolerances to ensure reliable crankshaft support, optimal oil film retention, and long service life.

King's main bearings are manufactured using advanced tri-metal or bi-metal construction techniques, incorporating a steel backing, an intermediate layer, and a precision overlay designed to resist wear, handle high loads, and maintain consistent clearances throughout the engine's service life. The 1.0mm oversize designation (AM1.0) makes this set appropriate for engines where the crankshaft main journals have been machined 1.0mm undersize during reconditioning.

Key Features:

• Precision-engineered main bearing set for Subaru 1800cc engines (1980 and later)
• 1.0mm oversize — designed for use with reground crankshafts machined 1.0mm undersize
• Manufactured to OEM specifications for proper fit, clearance, and oil flow
• High-load capacity construction for dependable crankshaft support
• Consistent wall thickness for accurate installation clearances
• Corrosion-resistant overlay for extended bearing life
• Full set includes all main bearing shells required for the engine

King Engine Bearings are a trusted choice for professional engine builders and performance rebuilders worldwide. The MB3324AM1.0 is an ideal solution for Subaru 1800cc engine rebuilds requiring an oversize main bearing set.