Dieselsite Billet 7.3L Thermostat Housing - 1999-2003 Ford F-Series
Dieselsite Billet 7.3L Thermostat Housing - 1999-2003 Ford F-Series is backordered and will ship as soon as it is back in stock.
Confirm vehicle fitment
Confirm vehicle fitment
Confirm fitment before ordering. Match the year, make, model, trim, engine, drivetrain and selected options shown on this page. If any detail is unclear, search your exact vehicle or contact us before checkout.
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What’s included
What’s included
The product description and selected variant determine what is included. Items shown in lifestyle or installation photos are not included unless they are specifically listed in the description.
Dieselsite Billet 7.3L Thermostat Housing - 1999-2003 Ford F-Series
Dieselsite Billet 7.3L Thermostat Housing - 1999-2003 Ford F-Series is backordered and will ship as soon as it is back in stock.
Buy with confidence
Verify fitment, selected options, availability and included components before checkout. Secure payment options and order confirmation are provided at checkout.
Description
Description
Dieselsite Billet Thermostat Housing – 7.3L Powerstroke (1999–2003)
If you’ve ever replaced a thermostat on a 7.3L Powerstroke, you already know how bad the factory thermostat housing is. The OEM stamped-steel housing is thin, rust-prone, and notorious for warping and leaking after removal. Ford even considers it a single-use “disposable” part.
The Dieselsite Billet Thermostat Housing solves all of those problems with a precision-machined billet aluminum design that seals properly, resists corrosion, and can be reused over and over again.
🔥 Why Upgrade to the Dieselsite Billet Housing:
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Billet Aluminum Construction – No rust, no warping, no leaks
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Reusable Design – Unlike the OEM housing, this is NOT disposable
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Improved Sealing Surface – Eliminates common thermostat leaks
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Cleaner Engine Bay Appearance – Looks as good as it performs
🛠️ What’s Included:
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Billet thermostat housing
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New gasket included
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Replacement mounting bolts included
⚠️ Installation Notes:
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Maximum bolt torque: 100 in-lbs
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Do NOT exceed torque specification
🚗 Fitment:
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1999–2003 Ford 7.3L Powerstroke
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Fits 1999–2003 Super Duty
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Fits some 2002–2003 E-Series vans
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⚠️ Older E-Series vans use a different style — verify before ordering
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📌 OBS Owners:
If you’re looking for this housing for an OBS (94–97) truck, see the related items below for the correct version.
If you’re tired of coolant leaks, warped flanges, and replacing disposable factory housings, the Dieselsite Billet Thermostat Housing is a permanent fix you’ll only install once.
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