ACL BMW M20/M50/M52/M54 - 1919CC 80.0mm Bore 66.0mm Stroke .50 Oversized Main Bearing Set

This set is specifically for engines with an 80.0mm bore and 66.0mm stroke, and it's a .50mm (0.020 inch) undersize set. This means it's intended for crankshafts that have been machined down by 0.50mm to correct for wear or damage. ACL uses well-built materials in their bearings, aiming for durability and consistent performance under the stresses of engine operation. Installing these bearings is a critical step when rebuilding or repairing your BMW's engine, ensuring the crankshaft is properly supported and lubricated.

This ACL main bearing set fits a wide range of BMW models, including various 3 Series, 5 Series, M3, X3, X5, Z3, and Z4 vehicles from the mid-1980s through the mid-2000s. When rebuilding your engine, it's important to ensure all components are clean and properly lubricated according to the manufacturer's specifications. Always refer to your vehicle's service manual for detailed installation procedures and torque specifications.