Perfect Circle CB481P30 Connecting Rod Bearing Set 0.030" Undersize

The Perfect Circle CB481P30 is a tri-metal connecting rod bearing set designed for Chrysler, Dodge, Plymouth, and Jeep small block V8 engines including 273, 301, 318, 340, 345, and 360 cubic inch displacements, as well as V10 Viper 488ci engines from 1956-2003. This bearing set features a 0.030 inch undersize dimension for use with reground crankshafts.

Key Features:

• P-Series tri-metal construction with steel backing, copper-lead alloy intermediate layer, and electroplated lead-tin-copper overlay
• Hardened steel backing provides exceptional strength and durability
• Higher eccentricity and crush factor designed to compensate for rod bore distortion in high-revving engines
• Extra-thin overlay optimized for performance applications
• Lower sections feature dowel holes compatible with aluminum connecting rods
• 0.030" undersize specification for crankshafts machined 0.030" under standard diameter

Perfect Circle, now part of the Mahle/Clevite family, has been a trusted name in engine bearings for decades. These P-Series bearings are engineered specifically for high-performance and racing applications where engines operate at elevated RPM levels. The tri-metal construction combines the strength needed for durability with the critical surface characteristics of conformability and wear resistance. Each bearing is sold individually, allowing you to purchase the exact quantity needed for your rebuild.