King Engine Bearings MB5739SI0.5 Main Bearing Set Subaru Oversize - EJ20/EJ22/EJ25 002

The King Engine Bearings MB5739SI0.5 is a precision-engineered main bearing set designed specifically for Subaru EJ20, EJ22, and EJ25 engines with a housing bore oversize of +.002 inch. This bearing set provides the critical interface between the crankshaft and engine block, ensuring smooth rotation and reliable performance in demanding applications.

Key Features:

• Bimetal construction with aluminum silicon alloy base for excellent wear resistance and heat dissipation
• +.002 inch oversize housing bore dimension for engines with machined or worn main bearing bores
• Precision tolerances ensure proper oil clearance and optimal crankshaft support
• Direct replacement for Subaru EJ-series engines including EJ20, EJ22, and EJ25 variants
• High-performance bearing material suitable for stock and modified applications

King Engine Bearings are manufactured to exacting standards and are a popular choice among engine builders and performance enthusiasts. The bimetal aluminum silicon construction provides an ideal balance of strength, conformability, and resistance to wear, making these bearings suitable for street, racing, and rebuilt engine applications. Proper measurement of crankshaft journals and housing bores is essential before installation to ensure correct bearing selection.