Description
Main bearing wear is one of the most critical failure points in any engine build, and running undersized bearings ensures proper oil clearance and film strength under sustained load. The Calico coating on this MS909H19 set provides superior anti-wear protection and reduced friction, allowing you to push higher RPMs and boost levels with confidence. Whether you’re rebuilding a street engine or preparing for the track, this H-Series kit delivers the precision fit and durability your Small Block Chevy demands.
- Calico coated construction
- 0.019″ undersize
- H-Series specification
- Small Block Chevy fitment
- Complete bearing set
- Enhanced anti-wear protection
- Optimized oil clearance
- Bolt-on installation






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