Clevite CB663FN1 F-Series LS Rod Bearing Undersize - 001

The Clevite CB663FN1 is a high-performance F-Series connecting rod bearing designed for LS and LT engines, manufactured .001" undersize for precision crankshaft applications. This premium bearing features MAHLE's 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 applications.

Key Features:

• TriMetal construction with lead-tin-indium-alumina overlay for maximum durability
• Cast bronze lead substrate provides superior strength and heat dissipation
• .001" undersize specification for use with reground crankshafts
• Ramp and pad thrust face design increases oil pressure to thrust surfaces
• Enhanced lubrication and bearing cooling for high-performance applications
• 126% increase in load carrying capacity compared to conventional bearings
• Rod journal size: 2.100 inches
• Sold individually - quantity of 8 required per LS/LT engine

The F-Series bearing's innovative ramp and pad thrust face creates increased oil pressure to the thrust wear surface, resulting in improved lubrication and cooling. This advanced design provides superior resistance to seizure and increased fatigue strength compared to standard copper/tin/lead overlay bearings, making it ideal for street performance, competition, and racing applications.