Perfect Circle CB663HNDC10 H-Series Coated Connecting Rod Bearing 0.010" Undersize Narrowed Doweled

The Perfect Circle CB663HNDC10 is a high-performance H-Series connecting rod bearing designed for demanding automotive applications. This bearing features a 0.010 inch undersize dimension for use with reground crankshafts, along with a narrowed profile, dowel hole configuration, and advanced protective coating.

Key Features:

• H-Series design with medium eccentricity and high crush for race-proven reliability
• TriMetal construction with hardened steel back and precision electroplated overlay
• Advanced protective coating for enhanced wear resistance and lubricity
• Narrowed bearing profile provides greater crankshaft fillet clearance
• Doweled configuration for precise bearing retention and alignment
• 0.010 inch undersize for reground crankshaft applications
• Manufactured without flash plating for superior seating characteristics
• Enlarged chamfers accommodate oversize crankshaft fillets

Perfect Circle H-Series bearings were developed for NASCAR-level competition but are suitable for all high-performance street and race engines. The tri-metal bearing construction delivers exceptional conformability, embedability, and fatigue resistance. The protective coating provides critical protection during initial startup and protects against debris contamination. Ideal for small block Chevy, GM LS-Series, and compatible V8 engines operating in medium to high RPM ranges.