MICHIGAN 77 MS1343P10 P-Series Main Bearing Set Undersize - 0.010

The Michigan 77 MS1343P10 is a precision-engineered main bearing set designed for International/Navistar engine applications. This P-Series bearing set features a 0.010 inch (0.25mm) undersize specification, making it ideal for crankshafts that have been machined during engine rebuilding.

Key Features:

• P-Series tri-metal construction with cast copper lead for superior durability
• Steel backing provides structural support under high-load conditions
• Electroplated babbitt overlay on running surface for excellent wear characteristics
• Higher eccentricity and crush factor to compensate for high-load factors and engine distortion
• 0.010 inch undersize for precision fitment on machined crankshafts
• Ideal for heavy-duty, motorsports, and performance applications

Michigan 77 bearings are part of the legendary Clevite bearing family, trusted by professional engine builders for decades. These P-Series main bearings offer the versatility needed for demanding rebuilds where enhanced durability is required beyond standard OE replacement specifications.