Pump, Water w/o Pulley (DSL). PART NO: A-79003714. This water pump with gasket but without pulley is completely new, from the seal to the housing. It fits multiple Massey Ferguson Industrial / Construction and Tractor models. (NOTE: Replaces many part numbers - see below). . MODELS: Allis-Chalmers TRACTOR: 170 (DSL) Allis-Chalmers TRACTOR: 175 (SN: 236U70098080 > & 248U9346 > ).