Perfect Circle CB819P20 Connecting Rod Bearing Set .020" Undersize

The Perfect Circle CB819P20 is a professional-grade connecting rod bearing set designed specifically for AMC/Jeep V8 engines displacing 390 and 401 cubic inches (6.4L and 6.6L) from 1968-1978. This P-Series bearing set features .020" undersize dimensions for use with reground crankshafts during engine rebuilds.

Advanced Tri-Metal Construction:

• Steel backing for structural strength and heat dissipation
• Intermediate copper-lead alloy layer for enhanced load capacity
• Electroplated lead-tin-copper overlay (babbitt layer) for superior lubricity
• Tri-Metal design provides higher load capacity than traditional Bi-Metal bearings

Key Features:

• .020" undersize for crankshafts machined .020" under OE specification
• Babbitt overlay adapts to journal surfaces and provides natural lubrication properties
• Suitable for heavy duty, motorsports, and street performance applications
• Ideal upgrade from standard Bi-Metal engine bearings
• Provides forgiveness for vehicles with less-than-ideal maintenance schedules

As part of the MAHLE/Clevite family of brands, Perfect Circle bearings represent decades of engineering excellence trusted by professional engine builders. The P-Series is the most versatile replacement bearing line, suitable for most OE applications while offering the durability needed for demanding use conditions.