Description
If you’re rebuilding a Small Block Chevy engine or replacing worn connecting rod bearings, the CB-663HN-21 delivers the precision fit and durability your build demands. This 0.021″ undersize bearing accounts for worn journals, allowing you to machine-match your crankshaft without full replacement—a smart move for cost-effective engine restoration. Narrowed geometry optimizes oil film thickness and bearing life, keeping your engine reliable under sustained load.
- Connecting rod bearing
- H-Series construction
- 0.021″ undersize
- Narrowed design
- Small Block Chevy fitment
- Single bearing
- OEM-equivalent quality
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