ACL Bearings 4M2037P-.75 Connecting Rod Bearing Set Undersize - 0.75mm

The ACL Bearings 4M2037P-.75 is a precision-engineered connecting rod bearing set designed for crankshafts that have been machined 0.75mm (approximately .030 inch) undersize. These bearings feature ACL's tri-metal copper-lead heavy-duty material suitable for everyday and performance engines, providing reliable protection for rebuilt and performance applications.

Key Features:

• 0.75mm (.030 inch) undersize specification for reground crankshaft journals
• Tri-metal copper-lead material construction for every performance requirement
• Extra material thickness on the inside facing the crankshaft journal
• Precision manufacturing with tight tolerances for optimal clearances
• Complete bearing set for engine rebuild applications
• Suitable for both street and performance applications

Application Notes:

Undersized bearings are used when a crankshaft has been machined or ground undersize. The .75mm undersize designation means the crankshaft journal diameter has been reduced by 0.75mm from the original factory specification. The thickness of the bearing shells vary by .10mm (.004 inches) for each increment, providing the proper clearance for machined crankshafts. Always verify crankshaft journal measurements and check bearing clearances using plastigage before final assembly.

ACL Bearings has been manufacturing quality engine bearings since 1922, with a reputation for precision manufacturing and strict quality control. These bearings are trusted by professional engine builders and enthusiasts worldwide for reliable performance in demanding applications.