ACL Bearings 5M909H-01 H-Series Main Bearing Set, 0.001 in Undersize for Small Block Chevy

ACL Bearings 5M909H-01 H-Series Main Bearing Set is designed for Small Block Chevy engine applications requiring main bearings with a 0.001 in undersize fit. This precision-engineered kit supports reliable crankshaft installation and helps provide the consistent bearing clearance required for high-performance and rebuild applications.
The H-Series construction is developed for demanding engine environments, offering dependable load support and durable performance when properly installed with the correct crankshaft specifications. Each bearing set is manufactured to ACL Bearings standards and is intended to help maintain stable lubrication and smooth crankshaft operation throughout the engine’s service life.
Use the ACL Bearings 5M909H-01 Main Bearing Set when replacing worn or damaged main bearings or completing a Small Block Chevy engine rebuild. Verify the crankshaft journal measurements, bearing clearance, and application details before installation to ensure the 0.001 in undersize specification is appropriate. This kit is not air restricted and does not require truck freight shipping.

Features:

• Brand: ACL Bearings

• Part Number: 5M909H-01

• Bearing Series: H-Series

• Bearing Type: Main bearing set

• Fitment: Small Block Chevy applications

• Bearing Size: 0.001 in undersize

• Application: Engine rebuild and performance replacement use

• Shipping Classification: Not air restricted and not truck freight only