Motorcraft RT1201 is a direct-fit engine coolant thermostat for verified Ford 7.3L V8 Diesel Powerstroke applications, helping the cooling system regulate coolant flow at the OE-specified threshold. Built for work-duty trucks and vans, it replaces a worn or sticking thermostat with a fit-focused assembly designed to seat properly in the factory housing.

Motorcraft RT1201 Thermostat Features:

• Designed for 1996-2003 Ford 7.3L Powerstroke diesel applications verified in the catalog data, including E-350 Econoline, Excursion, F-250, F-350, and F-250 through F-550 Super Duty models.
• OE temperature rating is listed at 190 to 192 degrees, matching the factory-specified operating range for applicable Ford diesel cooling systems.
• Stainless steel or brass bridge and spring frame construction supports durability in a hot coolant environment.
• Stainless steel tapered-end pistons with flexible elastomeric boots help the thermostat operate smoothly as coolant temperature changes.
• Streamlined venturi nozzle design supports strong coolant flow when the thermostat opens.
• Brass cover and guide support the heat motor piston, while the mounting flange is shaped to fit and seat correctly in the intended housing.
• Cross-reference numbers include F6TZ-8575-EA and F6TZ8575EA for buyers matching an OE service number.