I would love to find a home for it, someone who can use it. but I can't give them anything to go on, except describing the number of teeth and which way the gears are slanted. The NP540 in my W500 takes a "spur" gear and this pto has a "helical" gear. As you no doubt are aware, the first gear is driven by the transmission, which, in turn, rotates the gear next to it, which, in turn, drives the gear on the shaft behind, which drives the winch, pump, or whatever. The people I have talked with all tell me this is an older unit, based on the fact that the two gears were machined together on the same shaft. Newer ones have two separate gears on one shaft.