King Engine Bearings MB5220SI0.75 Main Bearing Set Oversize Subaru - 0.75mm EJ20 EJ22 EJ25

The King Engine Bearings MB5220SI0.75 is a 0.75mm oversize main bearing set engineered for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged applications. This complete 5-pair bearing set features King's proprietary bi-metal SI material construction for reliable OE-replacement performance.

Key Features:

• Bi-metal construction with aluminum alloy containing 2.5-3% silicon for enhanced strength
• Lead-free, environmentally safe bearing material
• 0.75mm oversize for machined crankshafts requiring oversize bearings
• 5-pair complete main bearing set with thrust bearing in position #3
• Ideal for medium-load engines with nodular cast iron crankshafts
• Precision-manufactured to OE specifications for proper fit and clearances

King's SI material blends aluminum with silicon to provide excellent strength characteristics while maintaining the embedability needed for reliable operation. This bearing set is specifically designed for engines with thrust bearing location in the #3 position, making it the correct replacement for Subaru boxer engines. Whether you're performing a standard rebuild or addressing wear on a machined crankshaft, these bearings deliver OE-quality performance with modern, lead-free materials.