Clevite MS1386P30 P-Series Main Bearing Set .030 Oversize

The Clevite MS1386P30 is a P-Series main bearing set designed for high-revving engines requiring .030" oversize bearings. As one of the oldest and most trusted members of the Clevite 77 bearing family, P-Series bearings are engineered to handle the demands of performance applications, heavy-duty use, and motorsports.

Construction and Design:

• Tri-metal cast copper lead construction with steel backing for superior strength
• Electroplated babbitt overlay on running surface for excellent bearing properties
• Extra-thin overlay design prevents overlay fatigue in high-load conditions
• Higher eccentricity and high crush factor compensate for engine distortion
• Oil grooves extend around both halves for enhanced lubrication on most applications

Key Features:

• .030" oversize diameter for use with resized crankshaft journals
• Ideal for rebuilding engines with anticipated demanding use
• Provides superior conformability, embedability, and fatigue resistance
• Suitable upgrade from bi-metal bearings due to increased load capacity
• Proven performance in street performance and racing applications

Clevite bearings have been the choice of professional engine builders and NASCAR teams since 1948, delivering race-proven reliability and durability. The P-Series represents the most versatile replacement bearing suitable for most OE applications while offering performance-grade protection.