This is a Brand New water pump to fit tractors.- RE55985, SE500912 Model:- 4050, 4055, 4250, 4255, 4450, 4455, 4555, 4560, 4650, 4755, 4760, 4850, 4955, 4960, 540E SKIDDER, 548E SKIDDER, 640E LOADER, 644E LOADER, 644ER LOADER, 648E SKIDDER, 690C EXCAVATOR, 690CR EXCAVATOR, 740E SKIDDER, 748E SKIDDER, 770B MOTOR GRADER W/6076 ENG, 772B MOTOR GRADER, 790 EXCAVATOR, 790D EXCAVATOR, 792 EXCAVATOR, 8450, 850B CRAWLER, 9500 COMBINE, 9500 SH COMBINE, 9600 COMBINE, 9950 COTTON PICKER, 9960 COTTON PICKER Tech. Data:Water Pump with gaskets. Thanks For Your Business!! 1406-6216