ACL Bearings 5M1947-.25 Main Bearing Set Undersize - 0.25mm

The ACL Bearings 5M1947-.25 is a precision-engineered main bearing set designed for high-performance engine builds and rebuilds. This set features 0.25mm (0.010") undersize bearings, specifically manufactured for crankshafts that have been machined or require oversized bearing clearances.

Key Features:

• 0.25mm undersize construction for machined crankshaft journals
• Tri-metal construction with high-strength steel backing for superior durability
• Precision bore geometry ensures optimal oil film thickness and load distribution
• Advanced bearing material provides excellent fatigue resistance and conformability
• Engineered to meet or exceed OEM specifications for demanding applications
• Complete main bearing set for comprehensive engine assembly

ACL Race Series bearings are manufactured using state-of-the-art materials and processes to deliver reliable performance in both street and racing applications. The undersize design accommodates crankshafts that have been ground to restore journal dimensions, making this set ideal for professional engine rebuilds where precise clearances are critical.