Clevite MS-909H-21 Engine Crankshaft Main Bearing Set

The Clevite MS-909H-21 is a high-performance engine crankshaft main bearing set engineered for medium to high RPM applications. Part of Clevite's H-Series performance line, this bearing set delivers the durability and precision required for demanding engine builds.

Key Features:

• Medium eccentricity design for optimal oil clearance and load distribution
• High crush construction ensures positive bearing retention in the bore
• Hardened steel backing provides superior strength and resistance to fatigue
• Thin overlay design promotes better conformability to crankshaft journals
• Manufactured without flash plating for improved seating characteristics
• Optimized for crankshafts with oversize fillets

H-Series bearings are specifically designed for performance and racing applications where engines operate at elevated RPM ranges. The hardened steel back construction and engineered overlay thickness provide excellent load-carrying capacity while maintaining the conformability needed for reliable operation. The high crush design ensures the bearings remain securely seated during thermal cycling and high-stress conditions.

This main bearing set is ideal for engine builders and performance enthusiasts seeking reliable crankshaft support in street performance, racing, and high-output engine applications.