King Engine Bearings MB5220SI0.5 Main Bearing Set Oversize Subaru - 0.5mm EJ20/EJ22/EJ25

The King Engine Bearings MB5220SI0.5 is a precision-engineered main bearing set designed for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged applications. This set features a 0.5mm oversize for worn or machined crankshafts, providing proper clearances during engine rebuilds.

Key Features:

• Bi-metal aluminum construction with 2.5-3% silicon content for enhanced strength and durability
• Lead-free, environmentally safe material composition
• OE-replacement quality bearing design suitable for medium-load engines
• Specifically engineered for nodular cast iron crankshafts
• Complete 5-pair main bearing set with thrust bearing in #3 position
• 0.5mm oversize for machined crankshafts requiring increased bearing thickness

King's SI-series bearing material combines aluminum with silicon to create a robust, lead-free alternative that excels in street and performance applications. These bearings are ideal for engine rebuilders looking for reliable OE-replacement quality bearings that meet modern environmental standards while delivering excellent wear resistance and load capacity.