TKP0002 is an A/C compressor for the Kenworth T600, T800, W900, model years 2002 to 2008.
It replaces 54 OEM and aftermarket numbers, among them 4425, 1446X, 4040. Searching any one of them will find this part.
On compressors the clutch pulley diameter, its groove count and the coil voltage all have to match, along with the port configuration on the head.