Clevite MS-178P-10 Engine Crankshaft Main Bearing Set

The Clevite MS-178P-10 is a high-performance crankshaft main bearing set designed for demanding engine applications. This P-Series bearing set features full grooving to maximize oil flow to connecting rod bearings, making it ideal for engines requiring superior lubrication under extreme conditions.

P-Series Performance Features:

• High crush design for maximum bearing retention and stability
• Reduced overlay thickness to prevent overlay fatigue and hen tracking
• Full groove design in main bearings to optimize oil delivery to rod bearings
• Hardened steel backing for exceptional strength and fretting resistance
• Greater eccentricity to narrow bearing contact patterns and improve oiling
• Legendary Clevite TriMetal construction for durability

When to Use P-Series Bearings:

P-Series main bearing sets are engineered for high-RPM applications where maximum oil flow to the connecting rods is critical. These bearings excel in performance engines experiencing severe rod bore close-in, typically indicated by nearly full parting line contact patterns. The higher eccentricity design helps narrow bearing contact patterns while preventing rod bearing oil starvation, which manifests as surface polishing, smearing, or discoloration concentrated at the bearing's axial center.

The full groove configuration ensures continuous oil supply to connecting rod bearings, making this bearing set an excellent choice for racing applications, high-performance street engines, and any build where connecting rod lubrication is paramount. P-Series bearings represent Clevite's original high-performance bearing technology, proven through decades of competition use.