Belt Idler to Fanshaft Thermo King SLe / SMX (78-1987)

This part is compatible or replaces part numbers: 

THERMO KING: 78-1987 781987 781987 78-1488, 781488, 781-488, 1E11111H53 78-1272, 781272, 781-272, 2C39205H65 20-3035, 203035, 203-035, 78-1951, 781951, 781-951, 3E12194H01, CP10515, TK-78-1488