This Clevite H-Series connecting rod bearing fits Chevrolet big block V8 engines. It is a 0.021 in undersize bearing that is narrowed, sold individually. Clevite H-Series performance bearings use a medium level of eccentricity, high crush, a hardened steel back and a thin overlay, and are intended for crankshafts with oversize fillets and engines that run in the medium to high RPM range.
Specifications:
- Type: Connecting rod bearing, H-Series (sold each)
- Size: 0.021 in undersize
- Design: narrowed
- Engine: Chevrolet big block V8
- Part number: CB743HN21 (also listed as CB-743HN-21)
Engine Application: Chevrolet big block V8 (Big Block Chevy).
FAQ
What engine does the Clevite CB743HN21 fit?
It fits Chevrolet big block V8 engines, listed as Big Block Chevy. Confirm your exact engine before ordering.
Is this sold as a full set?
No, it is sold individually (each). A V8 has eight connecting rods, so order eight bearings for a complete engine.
What size is this bearing?
It is 0.021 in undersize, for crankshaft rod journals ground 0.021 in smaller than standard.
What is a narrowed bearing?
A narrowed bearing has reduced width to increase fillet clearance on the crankshaft, which is common in performance builds.
What does H-Series mean?
H-Series is Clevite's performance bearing line, with a hardened steel back and high crush.
