2H3525 Bearing Fits Caterpillar ModelsOne New Aftermarket Replacement Flywheel Clutch Shaft Roller Bearing Outer Race Fits Caterpillar (Fits CAT) Equipment This aftermarket replacement 2H3525 is a special roller bearing outer race used in the flywheel clutch assembly on a wide range of Fits Caterpillar (Fits CAT) track type tractors, motor graders, pipelayers, and track loaders. The outer race holds the cylindrical rollers in position and provides a hardened surface for them to roll