D8NN8575AA Thermostat w/ Gasket Fits Ford 2000 2310 2610 3000 3600 3610 model-550ZB2561 438" Bore Type: Square Bore:

438" Bore Type: Square Bore: 1

T67203 remains the correct part number for the models and serial number ranges listed above

Replaces Part Number: 539535R91

Hesston Swathers: 6550

D8NN8575AA Thermostat w/ Gasket Fits Ford 2000 2310 2610 3000 3600 3610 model-550ZB2561 438" Bore Type: Square Bore:One New Aftermarket Replacement Thermostat With Gasket Fits Ford Tractors: 2000, 3000, 4000, 5000, 7000, (1965 1975), 2600, 3600, 4100, 4600, 5600, 5700, 6600, 6700, 7600, 7700 (1975 1981), 2610, 3610, 4110, 4610, 5610, 6610, 6710, 7610, 7710 (1981 & up), 8000, 8700, 9000, 9700 (1968 1978). *Notes: Includes Gasket, Rated at 168 degrees* Replaces Part Numbers: C9NN8575C, D8NN8575AA