King Engine Bearings MB5651SI SI-Series Main Bearing Set

The King Engine Bearings MB5651SI is a precision-engineered main bearing set from King's SI-Series line, designed specifically for OE replacement applications. This bearing set provides reliable performance for aftermarket gasoline or diesel engine rebuilding projects and performance engines utilizing factory crankshafts.

King SI-Series Construction:

• Bi-metal construction featuring silicon aluminum alloy bearing material
• Steel backing provides structural strength and dimensional stability
• Alecular bearing material with superior embedability characteristics
• "Bull's Eye" bearing wall tolerance of ±0.0001" for exceptional precision
• Sold as a complete set for proper installation

Quality and Manufacturing:

• Manufactured by King Engine Bearings, specialists in engine bearing technology since 1960
• ISO 9001:2000, TS 16949, and AS 9100 certified production facilities
• Stringent quality control procedures throughout the entire manufacturing process
• Each bearing shell is stamped with a production number for complete traceability

King Engine Bearings focuses exclusively on bearing manufacturing, ensuring that every product meets the highest standards for quality, precision, and reliability in the automotive aftermarket. These SI-Series bearings are engineered to deliver long-lasting performance in demanding engine rebuilding applications.