Clevite MS958AL20 Main Bearing Set Undersize - 020

The Clevite MS958AL20 is a high-quality main bearing set designed for engines requiring .020 inch undersize bearings for reground crankshafts. This bearing set is part of Clevite's AL-Series line, featuring advanced aluminum silicon bi-metal construction for superior performance and durability in modern engine applications.

Key Features:

• AL-Series aluminum silicon bi-metal construction with 100% lead-free design
• .020" undersize for crankshafts machined .020" smaller than original specification
• Contains 60% more silicon than competing bi-metal bearings for improved journal surface conditioning
• Precision bored inside diameters for exact fitment and optimal surface characteristics
• Enhanced wear resistance and superior seizure protection compared to standard bi-metal bearings
• Color-coded for quick and positive identification during installation
• Manufactured to exceed OEM specifications for strength and reliability

Clevite AL-Series bearings are engineered as premium replacement bearings for engines originally equipped with aluminum bearings. The bi-metal construction provides excellent conformability and embedability while maintaining the precise oil clearances critical for proper engine lubrication. These bearings are ideal for engine rebuilds where the crankshaft has been ground to remove wear or damage.