Clevite MS-1948P Engine Crankshaft Main Bearing Set

The Clevite MS-1948P is a precision-engineered main bearing set designed to provide superior crankshaft support and lubrication in high-performance and racing engines. This bearing set utilizes proven tri-metal construction for exceptional strength, durability, and load-carrying capacity.

Key Features:

• Tri-metal bearing construction with hardened steel backing for maximum strength
• Optimized 180-degree grooving in upper shells for proper oil distribution to connecting rods
• Ungrooved lower shells for maximum oil film thickness and bearing life
• High crush design for superior retention and prevention of bearing rotation
• Reduced overlay thickness to prevent overlay fatigue in demanding applications
• Engineered for high-RPM performance and heavy loads

Design and Performance:

Clevite main bearings are engineered with specific grooving patterns to balance oil delivery with bearing performance. The upper shells feature a 180-degree oil groove that efficiently supplies oil to connecting rod bearings while maintaining optimal film strength. The lower shells remain ungrooved to maximize the oil film thickness where loads are highest, providing superior protection and extended service life. This design approach has been validated through extensive testing to deliver the best overall performance in demanding applications.

Application Notes:

This main bearing set is designed for engines requiring precise crankshaft support with optimized oil flow characteristics. The tri-metal construction combines a hardened steel back, intermediate copper-lead layer, and protective overlay to resist fatigue, conform to shaft irregularities, and provide exceptional embedability for foreign particles. Ideal for performance street engines, racing applications, and rebuilds where reliability and durability are critical.

Clevite engine bearings are manufactured to exacting tolerances and are trusted by engine builders worldwide for their consistent quality and proven performance in the most demanding conditions.