Description
A quality main bearing set is critical for engine longevity and reliability, especially in high-performance or rebuilt Small Block Chevy applications. The Alecular SI main bearing set delivers consistent oil film strength and dimensional precision where it matters most—supporting your crankshaft under sustained load. Whether you’re rebuilding after a refresh or upgrading to tighter tolerances, this kit ensures proper clearances and reduces risk of catastrophic bearing failure.
- Alecular SI construction
- 0.001″ undersize specification
- Small Block Chevy fitment
- Complete bearing kit
- CNC-precision tolerances
- OEM-quality materials
- MPN: MB 557SI 001
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