Clevite MS-2357A AL-Series Engine Crankshaft Main Bearing Set

The Clevite MS-2357A is an AL-Series (BiMetal) engine crankshaft main bearing set engineered to meet or exceed OEM specifications. As more and more manufacturers shift to aluminum bearings in production engines, Clevite's AL-Series line delivers the highest-quality replacement bearings in the industry — combining the conformable properties of aluminum with the precise engineering Clevite is known for.

Key Features:

• 100% Lead-Free Aluminum Silicon Construction — A bi-metal material that is environmentally responsible and matches modern OEM bearing designs
• 60% More Silicon Than Competing Bi-Metal Bearings — The elevated silicon content provides superior conditioning of journal surfaces for improved long-term performance
• Greater Seizure and Wear Resistance — The advanced aluminum silicon alloy resists seizure and reduces wear, extending engine service life
• 100% Bored Inside Diameters — Precision-bored IDs ensure accurate dimensions and optimal surface characteristics for consistent fit and performance
• Application-Specific Eccentricities — Carefully engineered eccentricity values tailored to the application deliver solid, reliable operation
• OEM-Style Umbrella Oil Groove — Where applicable, straight-shell main bearings feature an umbrella groove for superior oil control and improved oil pressure
• Ideal for OEM Rebuilds and Mild Performance Applications — Recommended by Clevite for engines equipped with cast crankshafts

Clevite has been a leader in replacement engine bearing design and manufacturing since 1948, with a legacy proven on racetracks and in everyday vehicles alike. The MS-2357A main bearing set carries on that tradition, providing dependable performance and durability for engine rebuilders and professional mechanics.