ACL Bearings 4B1630-.75 Oversized Rod Bearing Set for Nissan - 0.75mm

The ACL Bearings 4B1630-.75 is a precision-engineered oversized connecting rod bearing set designed specifically for Nissan engines. This bearing set features a 0.75mm oversize dimension, making it ideal for engines that have had their crankshaft journals machined or reground during a rebuild.

Key Features:

• 0.75mm (.030") oversize for machined crankshafts
• Tri-metal construction for superior durability and wear resistance
• Precision-manufactured to OEM specifications and tolerances
• Complete rod bearing set for multi-cylinder application
• High-performance alloy materials resist fatigue and deformation
• Engineered bearing clearances for optimal oil flow and protection

ACL Race Series bearings are manufactured using advanced metallurgy and strict quality control processes to ensure consistent performance in both street and high-performance applications. The oversized design compensates for material removed during crankshaft machining, restoring proper bearing clearances critical for engine longevity and performance. These bearings feature a steel backing with precision-applied bearing material layers that provide excellent load capacity and heat dissipation.

This connecting rod bearing set is essential for professional engine rebuilds where crankshaft journals have been undersized due to wear or damage. Proper bearing clearance and quality components are fundamental to preventing premature engine failure and ensuring reliable operation.