A mounting surface of an agricultural work vehicle power takeoff system. In one example, an agricultural vehicle includes a power takeoff (PTO) device. The PTO device includes a drive shaft and a mounting surface. Furthermore, the mounting surface includes a plurality of threaded apertures for coupling an auxiliary system to the PTO device, and a pilot configured to engage with a complimentary pilot of the auxiliary system to facilitate alignment of the PTO device with the auxiliary system. The mounting surface and the auxiliary system have the same mounting configuration.
