UPPER ROD BEARING LARGE JOURNAL STANDARD

Clevite H-Series Upper Rod Bearing Large Journal Standard

This Clevite H-Series upper connecting rod bearing is designed for Chevrolet small-block and GM LS engines using a standard 2.100" large-journal crankshaft.

Its narrowed profile and increased side clearance accommodate performance crankshafts with enlarged journal fillets. The tri-metal construction, hardened steel backing, high crush and thin bearing overlay provide reliable seating and load support in competition engines operating at sustained medium to high RPM.

Unlike the CB663HXN variant, this bearing maintains standard oil clearance. It is supplied individually as one upper shell, making it suitable for targeted replacement during engine inspection, servicing or rebuild work.

Specifications:

• Position: Upper connecting rod bearing
• Series: Clevite H-Series
• Journal Size: Standard
• Crankpin Diameter: 2.100"
• Housing Diameter: 2.225"
• Bearing Width: 0.842"
• Standard Wall Thickness: 0.062"
• Construction: Tri-metal
• Backing: Hardened steel
• Profile: Narrowed
• Coated: No
• Dowel Hole: No
• Quantity: One upper bearing shell
• Application: Chevrolet small-block and GM LS engines
• SKU: CB663HN-STD-UPPER