ACL Bearings 4M8063A-.75 Main Bearing Set Undersize - 0.75mm

The ACL Bearings 4M8063A-.75 is a precision-engineered main bearing set designed for engine rebuilds requiring 0.75mm (0.030") undersize bearings. This bearing set is manufactured to accommodate crankshafts that have been ground 0.75mm undersize, providing proper clearances for optimal engine performance and longevity.

Key Features:

• 0.75mm undersize thickness for reground crankshafts
• Tri-metal copper-lead construction for superior durability
• Enhanced heat dissipation through improved thermal transfer
• Tight wall tolerances for consistent performance
• Increased crush for secure bearing retention
• Optimized oil groove design for proper lubrication

ACL Bearings are widely recognized for their quality manufacturing and are used by professional engine builders worldwide. These bearings feature improved material composition, dynamic thickness control, and superior heat conduction properties compared to standard replacement bearings, making them suitable for both performance and everyday applications.