Clevite MS-1702A Engine Crankshaft Main Bearing Set

The Clevite MS-1702A is a precision-engineered crankshaft main bearing set designed to provide reliable lubrication and durability in demanding engine applications. This bearing set features optimized grooving technology that balances oil delivery to connecting rods while maintaining maximum oil film thickness for superior bearing protection.

Key Features:

• TriMetal bearing construction for exceptional strength and durability
• Optimized 180-degree upper shell grooving for ideal oil distribution
• Ungrooved lower shells for maximum oil film thickness and bearing life
• High crush design ensures secure retention in bearing bores
• Reduced overlay thickness prevents overlay fatigue
• Enlarged chamfers provide superior crankshaft fillet clearance
• Non-flash plated steel backing for improved seating characteristics

Advanced Engineering:

Clevite main bearings utilize sophisticated grooving patterns based on extensive performance testing. The upper shell features a 180-degree groove that efficiently supplies oil to connecting rod bearings while maintaining optimal film strength. The ungrooved lower shells, which bear the primary load, develop a thicker protective oil film that increases safety margins and extends bearing service life compared to fully-grooved designs.

Performance Series Options:

Clevite offers multiple bearing series to match specific application requirements. P-Series bearings feature maximum eccentricity and full grooving for high-RPM applications with extreme rod bore deformation. H-Series bearings provide medium eccentricity with enhanced fillet clearance, making them ideal for racing applications and modified crankshafts. K-Series (TriArmor) bearings add a proprietary moly/graphite surface treatment with PTFE carrier material for superior break-in protection and high-load performance. V-Series bearings utilize lead-indium overlay for improved conformability. M-Series bearings feature .006-inch thick babbitt lining on hardened steel for maximum conformability in engines with severe crankshaft deflection.

This bearing set is precision-manufactured to OEM specifications and is suitable for both performance rebuilds and demanding racing applications where reliability and durability are critical.