MAHLE CB663FN1 F-Series Connecting Rod Bearing 0.001" Undersize Small Block Chevy LS

The MAHLE CB663FN1 is a high-performance F-Series connecting rod bearing designed for Small Block Chevy and LS engines. This bearing features a 0.001 inch undersize dimension and narrowed profile, engineered for precision engine builds and performance applications.

Advanced TriMetal Construction:

• TriMetal design with lead-tin-indium-alumina electroplated overlay applied over MAHLE's cast bronze lead substrate
• Testing shows 126% increase in load carrying capacity before seizure versus conventional copper/tin/lead overlay bearings
• Enhanced fatigue strength and wear resistance for demanding performance conditions
• Higher seizure resistance without additional bearing thickness

Ramp and Pad Thrust Face Technology:

• Innovative thrust face design creates increased oil pressure to thrust wear surfaces
• Improved lubrication and bearing cooling for extended service life
• Withstands higher thrust loads compared to conventional flat thrust surfaces

Specifications:

• Size: 0.001 inch undersize
• Configuration: Narrowed profile
• Application: Small Block Chevy and GM LS-Series engines
• Sold individually (quantity of 8 required per LS/LT engine)

MAHLE Clevite F-Series bearings are trusted by engine builders for maximum performance and reliability in high-output street and racing applications. The precision-engineered overlay and advanced thrust face design make these bearings ideal for engines experiencing high loads and demanding operating conditions.