ACL Bearings 5M1629P-20 Performance Series Main Bearing Set Undersize - 0.020

The ACL Bearings 5M1629P-20 is a high-quality performance main bearing set designed for demanding engine rebuilds and performance applications. This set features 0.020" undersize bearings, specifically engineered for crankshafts that have been ground to remove wear and restore proper journal dimensions.

Key Features:

• P-Series performance construction for enhanced durability and reliability
• 0.020" undersize for reground crankshaft journals
• Tri-metal construction with hardened steel backing for superior strength
• Precision-engineered bearing geometry compensates for bore distortion at high RPM
• Enhanced crush factor ensures proper bearing retention in the housing
• Improved eccentricity assists in forming optimal hydrodynamic oil film
• Dark electroplated overlay finish with copper content for excellent conformability
• ISO-certified manufacturing process ensures consistent quality

ACL has been manufacturing precision engine bearings in Tasmania, Australia for over 70 years, earning a global reputation for quality and performance. The P-Series bearings are ideal for rebuilding engines where more demanding use is anticipated, including street performance, heavy-duty applications, and motorsports use.