Clevite MS459P30 P-Series Main Bearing Set

The Clevite MS459P30 is a P-Series main bearing set engineered for high-revving engine applications. Part of the oldest members of the Clevite 77 bearing family, these bearings are designed to compensate for the high-load factors and distortion in high-performance engines with higher eccentricity and a high crush factor.

Construction and Materials:

• Tri-metal cast copper lead construction with a steel back for support, a cast copper lead lining to withstand engine operation loads, and an electroplated babbitt overlay on the running surface
• Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes
• Oil grooves on most applications extend all the way around both halves for better oiling

Key Features:

• Produces a degree of conformability, embedability, slipperiness, and fatigue resistance not found in original equipment and competitive bimetal bearings
• Ideal for rebuilding engines for motorsports, street performance, and heavy-duty applications
• Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should
• Additional embedability makes it a good choice for older engines
• Manufactured to meet or exceed OE specifications

Clevite has been the trusted choice in engine bearings since 1929, with proven performance in NASCAR and IndyCar racing. The P-Series represents decades of engineering excellence for demanding high-performance applications.