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DieselSite BLBATH Black Billet Aluminum Thermostat Housing – 1999-2003 7.3L Powerstroke
Upgrade the weakest point in your 7.3 Powerstroke cooling system. The factory stamped-steel thermostat housing is thin, rusts quickly, warps under bolt torque, and is treated as a single-use “disposable” part. Once you remove it, the flanges often won’t seal again. The DieselSite BLBATH solves this with a precision-machined billet aluminum housing built for repeated use and years of leak-free service.
Key Benefits
- Billet aluminum construction resists corrosion and will not rust or pit like the OEM steel housing
- Rigid flanges that do not bend or distort when torqued
- Improved sealing surface for a reliable, leak-free thermostat install
- Reusable — remove and reinstall as needed without buying a new housing every time
- Clean, professional black finish that looks as good as it performs
Fitment
- 1999–2003 Ford 7.3L Powerstroke Super Duty (F-250, F-350, F-450, F-550)
- Some 2002–2003 E-Series vans (verify housing style — older E-Series use a different design)
What’s Included
- DieselSite BLBATH black billet thermostat housing
- New gasket
- Replacement mounting bolts
Installation Note Torque housing bolts to 100 in-lbs maximum. Do not exceed this specification.
Stop replacing cheap stamped-steel housings every time you service the thermostat. The DieselSite BLBATH is the last thermostat housing most 7.3 owners ever need to buy.
DieselSite BLBATH Black Billet Aluminum Thermostat Housing – 1999-2003 7.3L Powerstroke
Upgrade the weakest point in your 7.3 Powerstroke cooling system. The factory stamped-steel thermostat housing is thin, rusts quickly, warps under bolt torque, and is treated as a single-use “disposable” part. Once you remove it, the flanges often won’t seal again. The DieselSite BLBATH solves this with a precision-machined billet aluminum housing built for repeated use and years of leak-free service.
Key Benefits
Billet aluminum construction resists corrosion and will not rust or pit like the OEM steel housing
Rigid flanges that do not bend or distort when torqued
Improved sealing surface for a reliable, leak-free thermostat install
Reusable — remove and reinstall as needed without buying a new housing every time
Clean, professional black finish that looks as good as it performs
Fitment
1999–2003 Ford 7.3L Powerstroke Super Duty (F-250, F-350, F-450, F-550)
Some 2002–2003 E-Series vans (verify housing style — older E-Series use a different design)
What’s Included
DieselSite BLBATH Black Billet Aluminum Thermostat Housing – 1999-2003 7.3L Powerstroke
Upgrade the weakest point in your 7.3 Powerstroke cooling system. The factory stamped-steel thermostat housing is thin, rusts quickly, warps under bolt torque, and is treated as a single-use “disposable” part. Once you remove it, the flanges often won’t seal again. The DieselSite BLBATH solves this with a precision-machined billet aluminum housing built for repeated use and years of leak-free service.
Key Benefits
- Billet aluminum construction resists corrosion and will not rust or pit like the OEM steel housing
- Rigid flanges that do not bend or distort when torqued
- Improved sealing surface for a reliable, leak-free thermostat install
- Reusable — remove and reinstall as needed without buying a new housing every time
- Clean, professional black finish that looks as good as it performs
Fitment
- 1999–2003 Ford 7.3L Powerstroke Super Duty (F-250, F-350, F-450, F-550)
- Some 2002–2003 E-Series vans (verify housing style — older E-Series use a different design)
What’s Included
- DieselSite BLBATH black billet thermostat housing
- New gasket
- Replacement mounting bolts
Installation Note Torque housing bolts to 100 in-lbs maximum. Do not exceed this specification.
Stop replacing cheap stamped-steel housings every time you service the thermostat. The DieselSite BLBATH is the last thermostat housing most 7.3 owners ever need to buy.
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5/5 Stars out of 2 Reviews
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k.c (LOS ANGELES) | January 13th, 2025
Purchses the billet aluminum thermostat housing to replace the Ford oem rusted metal housing on my 2003 f350 7.3L PSD, it was easy to install, droved my truck for 660 miles in 2 days, no leaks. Great product and price.
Brandon Franklin (Massachusetts) | February 7th, 2024
Great item, fantastic craftsmanship. The o ring seal really makes the whole job a lot easier. Strength of neck is MUCH stronger than oem. Strongly suggest this if your doing a whole pump or even just the outlet
Proposition 65 Warning Information -
P65Warnings.ca.gov
Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3 Powerstroke 1999-2003
Fits: 7.3 Powerstroke 1996-2001
Fits: For Use With XDP Coolant Filtration System