Aluglide Main Bearing Set (5M1957H-STD) by ACL. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a hassle free installation, this reliable product can help you get you vehicle back on the road faster and easier.

• Size: Standard
• Min Shaft Size: 2.1646"
• Max Shaft Size: 2.1654"
• Min Tunnel Size: 2.3228"
• Max Tunnel Size: 2.3236"
• Max Wall Size: 0.0790"
• Max Overall Length: 0.787"

ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Race Series rod and main bearings are standard components in race engines that have set records and won championships from Mexico to Bonneville - from sport compact drift racing to small block NASCAR, IHRA, and NHRA cmpetitions. The unique combination of design, metallurgy, and engineering provides Race Series performance bearings with the endurance and capability to perform where others cannot. These exceptional bearings are available for a variety of American, Asian, and European performance engines.