ACL Bearings 5M1703-030 Main Bearing Set Undersize - 0.030

The ACL Bearings 5M1703-030 is a precision-engineered main bearing set designed for crankshafts that have been machined 0.030 inches undersize. This bearing set is manufactured to exacting tolerances to restore proper clearances and ensure reliable engine operation during rebuilds requiring reground crankshafts.

Key Features:

• 0.030 inch undersize specification for reground crankshaft journals
• Advanced metallurgy construction for superior durability and wear resistance
• Precision-manufactured to maintain proper oil clearances
• Hardened steel backing provides enhanced strength and dimensional stability
• Engineered for both standard replacement and performance applications

ACL Bearings has been manufacturing precision engine bearings in Tasmania, Australia for over 70 years, earning a global reputation for quality, innovation, and performance. Their bearings are used by major OEM manufacturers and trusted by professional engine builders worldwide. Whether rebuilding a street engine or preparing a performance application, ACL bearing sets deliver the reliability and precision demanded by today's engines.