Carrying on a tradition of durability and dependability, Clevite BiMetal (aluminum) engine bearings feature 100% lead-free aluminum silicon. Engineered with 60% more silicon than comparable competitive replacements, they provide better conditioning of journal surfaces. This results in greater seizure and wear resistance. PartNumber : cleCB1962A25MM(4) Description : Engine Connecting Rod Bearing Set Bearing Material : AL-3 Size : 0.25mm Undersize Engine Components::Bearings