King Engine Bearings MB4551SM0.25 Main Bearing Set Oversize - 0.25mm

The King Engine Bearings MB4551SM0.25 is a precision-engineered main bearing set designed for engine builders and enthusiasts who demand superior quality and performance. This bearing set features King's advanced tri-metal construction and proprietary pMax Black coating for enhanced durability and wear resistance.

Key Features:

• 0.25mm oversize bearing specification for precision engine builds and rebuilds
• High-performance tri-metal construction with steel backing, aluminum alloy intermediate layer, and specialized overlay
• pMax Black coating provides superior protection against wear and micro-welding
• Precision manufactured to strict tolerances for optimal oil clearance and bearing crush
• Designed for high-performance and racing applications where reliability is critical
• Complete main bearing set for comprehensive engine block installation

King Engine Bearings are trusted by professional engine builders worldwide for their consistent quality, precise dimensions, and exceptional durability under extreme operating conditions. The 0.25mm oversize dimension allows for proper bearing clearance when crankshaft journals have been machined or where increased bearing crush is required.