This GLYCO main bearing, part number 71-4724, is precision-engineered to meet stringent automotive standards. It is designed to provide essential support for the crankshaft, reducing friction and wear within the engine. The 0.25MM undersize specification indicates this bearing is intended for applications where the crankshaft journals have been machined to this specific tolerance, often as part of an engine rebuild or repair process. This ensures a perfect fit and optimal oil clearance for maximum efficiency and longevity. GLYCO is a recognized name in engine bearing technology, known for its commitment to quality materials and manufacturing processes. Choosing this bearing means opting for reliability and performance, contributing to the overall health and smooth running of your engine.