Clevite CB663FXN F-Series LS Rod Bearing with +.001" Extra Oil Clearance

The Clevite CB663FXN is a high-performance F-Series connecting rod bearing designed for LS engine applications requiring additional oil clearance. This bearing features advanced TriMetal construction with a lead-tin-indium-alumina electroplated overlay applied over a cast bronze lead substrate, delivering exceptional performance and reliability in demanding engine builds.

Advanced F-Series Technology:

• TriMetal lead-tin-indium-alumina electroplated overlay for superior durability
• 126% increase in seizure resistance compared to conventional H-Series bearings
• Enhanced fatigue strength and wear resistance for extended service life
• Cast bronze lead substrate provides maximum load carrying capacity
• No additional thickness required compared to standard H-Series bearings

Performance Features:

• +.001" extra oil clearance for high-performance and racing applications
• Hardened steel backing for structural integrity under extreme loads
• Optimized for medium to high RPM operation
• Suitable for competition engines and performance street builds
• Engineered for LS1, LS2, LS3, LS6, LS7, and LS9 small block Chevy engines

The CB663FXN is ideal for engine builders seeking the ultimate in bearing technology, offering superior seizure resistance without sacrificing dimensional accuracy. The extra .001" clearance makes this bearing perfect for high-performance applications where additional oil flow is beneficial to component reliability and longevity.