Perfect Circle CB818P20 Connecting Rod Bearing Set 0.020" Undersize

The Perfect Circle CB818P20 is a high-quality connecting rod bearing set engineered for Ford V8 engines (370, 429, and 460 cubic inch) produced from 1968 to 1995. This part number represents a 0.020" (.50mm) undersize crankshaft bearing, designed for engines that have been machined or require oversize bearings due to wear.

Advanced TriMetal Construction:

• TriMetal design featuring hardened steel backing for structural strength
• Copper-lead alloy intermediate layer provides superior load capacity
• Precision electroplated babbitt surface layer for reduced friction and wear
• Increased load capacity compared to standard BiMetal bearings

P-Series Performance Features:

• High crush factor ensures maximum bearing retention in the bore
• Higher eccentricity compensates for bore distortion at high RPM
• Extra-thin overlay prevents fatigue in demanding applications
• Dowel holes in lower sections for aluminum rod compatibility

Perfect Circle bearings (now part of the MAHLE/Clevite family) are ideal for engine rebuilds where more demanding use is anticipated, including heavy-duty applications, street performance, and motorsports. The versatile P-Series design makes these bearings suitable for most OE replacement applications while offering an upgrade path from standard bearings.