Pump, Water w/ Pulley (Gas & Diesel). PART NO: A-AF2368R. This water pump with single pulley is completely new, from the seal to the housing, and fits the John Deere Tractor 720 (gas & diesel) and 730 (gas & diesel). (NOTE: Replaces AF2368R-R, R1052). . MODELS: John Deere TRACTOR: 720 (Gas & Diesel) John Deere TRACTOR: 730 (Gas & Diesel).