Needle cage bearing d12 — a needle bearing in a cage (retainer). Used in assemblies with a piston pin; the number in the name is the diameter, 12 mm.
Replace it if the pin has play in the small end of the connecting rod, if the engine knocks, or if the needles are worn. Before ordering, compare the diameter with the size of your pin. Press the new bearing in by the outer ring, without striking the cage or the inner ring.
