Product Description
MAHLE TX44390 is a direct-fit main engine coolant thermostat for 2011–2016 Ford Super Duty trucks with the 6.7L Power Stroke. Built to OE specs for reliable warm-up and temperature control. GTIN: 639789305992.
- Direct replacement for the factory main engine thermostat
- Meets or exceeds OE performance and durability standards
- Ideal maintenance item to restore proper operating temp
Fitment
- 2011–2016 Ford F-250/F-350/F-450/F-550 Super Duty • 6.7L Power Stroke (main/primary cooling system thermostat)
Cross-Reference & Alternatives
- Motorcraft: RT-1249 (main engine thermostat, OE).
- Ford OE service numbers commonly referenced for 2011–2016 main thermostat: BC3Z-8575-E and supersessions (A/D/E).
- Alliant Power equivalent: AP63540 (main thermostat).
- MAHLE GTIN/UPC: 639789305992; MPN: TX44390.
What’s Included
(1) Main engine coolant thermostat.
FAQ
Is this the primary (main) thermostat?
Yes—TX44390 replaces the main/primary cooling system thermostat on 6.7L Power Stroke (not the secondary unit).
What temperature rating is it?
It’s built to stock spec for OE-equivalent temperature control (main thermostat).
Will it fit all 2011–2016 6.7L trucks?
Yes—F-250, F-350, F-450, and F-550 with the 6.7L Power Stroke (verify by VIN/options as usual).
What OE or aftermarket numbers cross to this part?
Motorcraft RT-1249; Ford BC3Z-8575-E (and related supersessions); Alliant AP63540.
