ACL Bearings 4M1494P-30 Main Bearing Set Undersize - 0.030

The ACL Bearings 4M1494P-30 is a precision-engineered crankshaft main bearing set designed for diesel engine applications. This complete bearing set features trimetal construction with a steel backing and advanced bearing lining materials that provide superior load capacity, durability, and anti-seizure properties for demanding engine rebuilds.

Key Features:

• Trimetal construction with steel backing for maximum strength
• 0.030" undersize for use with reground crankshafts
• Advanced aluminum-tin or copper-lead bearing alloy lining
• Electroplated lead-based overlay for enhanced conformability
• Precision-machined to exacting tolerances for proper oil clearances
• Complete main bearing set for full engine rebuild
• Replicates OEM specifications and metallurgy

ACL Bearings are recognized throughout the automotive industry for their quality construction and performance. The trimetal design combines high load capacity with excellent anti-seizure characteristics, making these bearings ideal for both stock rebuilds and performance applications. The 0.030" undersize designation allows proper clearances when used with crankshafts that have been ground to standard undersize specifications.