Description
Main bearing wear is one of the most critical failure points in any high-performance engine, directly affecting reliability and longevity under load. This Alecular SI undersize set restores proper clearances and bearing surface contact when factory specs have drifted, ensuring consistent oil pressure and eliminating catastrophic bearing knock. Whether you’re rebuilding after a street session or preparing a race engine, proper main bearing fitment is non-negotiable.
- Alecular SI construction
- 0.010 in undersize
- Small Block Chevy application
- Complete main bearing kit
- OEM-grade materials
- Precision-engineered clearances
- Drop-in installation ready
- MPN: MB 557SI 010
