ACL Bearings 4B1635A-.75 Connecting Rod Bearing Set Undersize - 0.75mm

The ACL Bearings 4B1635A-.75 is a precision-engineered connecting rod bearing set designed for reground crankshafts with 0.75mm (approximately 0.030 inch) undersize journals. These bearings are manufactured to restore proper oil clearance in engines that have had their crankshafts machined during rebuild or repair.

Key Features:

• 0.75mm undersize specification for reground crankshaft journals
• Tri-metal copper-lead construction for superior strength and durability
• Lead-tin-copper overlay for excellent seizure resistance and low friction
• High-tensile steel backing provides enhanced support and bearing retention
• Precise wall tolerances for consistent oil clearances
• Engineered to meet or exceed OE specifications

ACL Bearings are recognized throughout the automotive industry for their quality construction and reliable performance. These connecting rod bearings feature a tri-metal design with a copper-lead lining that provides fatigue strength and durability, combined with a soft overlay that ensures proper conformability and protection against seizure. When rebuilding an engine with a reground crankshaft, selecting the correct undersize bearing is critical for achieving proper oil clearance and ensuring long-term engine reliability.