New Old Stock (NOS) Genuine Detroit Diesel camshaft idler gear assembly, part # 8929322, for Series 60 engines (11.1L, 12.7L, 14L models, non-EGR) in buses, trucks, and heavy-duty diesel vehicles. This Belgian-made OEM part is unused, in original packaging with minor shelf wear. Metal parts like gears have grease on them, this is not rust as some pictures my seem to show.