Clevite MS-2269P Engine Crankshaft Main Bearing Set

The Clevite MS-2269P is a high-performance engine crankshaft main bearing set engineered to deliver superior lubrication and durability in demanding applications. This precision-manufactured bearing set utilizes Clevite's proven TriMetal construction, featuring a steel backing, copper-lead intermediate layer, and lead-tin-copper overlay for exceptional strength and wear resistance.

P-Series Performance Design:

• Full groove configuration maximizes oil flow to connecting rod bearings
• High crush design ensures maximum bearing retention in the housing
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Hardened steel backing provides added strength and resistance to fretting
• Increased eccentricity narrows bearing contact patterns and improves oil delivery

Optimized Bearing Geometry:

The MS-2269P features a 180-degree groove in the upper main shell, which engineering testing has proven to be the optimal design for performance applications. This configuration provides adequate oil supply to connecting rods while maintaining the thickest possible oil film for the crankshaft to ride on, resulting in improved bearing life and greater safety margins under high loads.

Key Features:

• TriMetal construction with steel back for maximum durability
• High crush specification for secure bearing retention
• Upper shell grooving optimized for oil flow without compromising film strength
• Ungrooved lower shells maintain maximum oil film thickness in high-load zones
• Precision manufactured to OE specifications and tolerances

The P-Series bearing design is ideal for high-RPM applications where rod bore close-in is a concern, or where increased oiling to rod bearings is required. These bearings are recommended when oil starvation symptoms such as surface polishing, smearing, or discoloration are observed on rod bearings.