Clevite MS1642P20 P-Series Main Bearing Set Undersize - 020

The Clevite MS1642P20 is a high-performance P-Series main bearing set designed for demanding engine applications. This set features 0.020-inch undersize dimensions, making it ideal for crankshaft machining and engine rebuilds requiring undersize bearings.

P-Series Performance Features:

• Tri-metal construction with cast copper lead for superior strength and durability
• Steel backing provides robust support for high-load engine operation
• Electroplated babbitt overlay on running surface delivers excellent wear resistance
• High eccentricity design compensates for bore distortion in high-revving engines
• High crush factor ensures maximum bearing retention in the housing
• Full oil grooves on most applications provide enhanced lubrication distribution

Construction Details:

• Steel back layer for structural integrity
• Cast copper lead intermediate layer to handle extreme loads
• Electroplated white metal babbitt running surface for optimal bearing characteristics
• Color-coded for easy identification and installation accuracy

Clevite P-Series bearings represent the original Clevite 77 bearing design, developed specifically for high-performance and racing applications. The tri-metal construction provides an ideal combination of conformability, embedability, and fatigue resistance that exceeds standard bi-metal bearings. These bearings are engineered to withstand the extreme conditions found in high-revving engines, making them a trusted choice for engine builders and professional racers since 1948.

Each main bearing set includes all necessary bearings for a complete crankshaft installation. The 0.020" undersize specification accommodates crankshafts that have been machined undersize during rebuilding or repair procedures.