When your Ford tractor runs too cold, it wastes fuel and shortens engine life, but you might not even notice until the damage is done. Cold engines don't burn fuel completely, leaving unburned diesel to wash down cylinder walls and dilute your oil. This 78-degree Celsius thermostat keeps your diesel at the right operating temperature where it burns clean and runs efficiently. What You're Getting Opens at 78°C for optimal diesel engine operation and fuel efficiency Quality wax pellet mechanism provides reliable temperature response through thousands of heat cycles Full-flow design minimizes cooling system restriction when open Durable construction resists corrosion from coolant additives Direct replacement that fits without modifications or adapters Built for Real Farm Work This thermostat is designed for the wide range of Ford New Holland tractors that have been the backbone of American agriculture for decades. From the classic Major and Super Major models to the popular 10 Series, 1000 Series, and 600/700 Series tractors, these machines handle everything from hay operations to heavy tillage work. Whether you're running a compact utility tractor or a big row-crop machine, proper temperature control is critical when you're working hard. Made to Last Farm equipment cooling systems face extreme conditions—from sub-zero winter starts to summer heat with heavy implements. This thermostat uses a precision-engineered wax pellet that expands predictably as temperature rises, opening the valve to allow coolant flow to the radiator. The robust construction handles the constant thermal cycling that farm work demands. Installation Notes Installation typically takes about 20-30 minutes. Drain coolant below the thermostat housing level first and clean all gasket surfaces thoroughly. Pay attention to orientation—the spring side faces the engine, with the pellet pointing toward the radiator. Installing it backward blocks coolant flow completely. Test the new thermostat in hot water before installation to verify it opens around 78°C.