Riffraff Diesel 7.3L Billet Thermostat Housing 99-03 7.3L Powerstroke
Replace your leaking, rusty 99-03 7.3L thermostat housing with an improved design! We have machined these housings out of billet aluminum and anodized them for a great looking and long lasting finish. Stainless Steel hardware is also provided.
100% Made in the USA!
143 Reviews Hide Reviews Show Reviews
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5 Good
Posted by Billy on Mar 19th 2025
Far superior to another brand billet housing that I ran for years.
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5 Billet Thermostat Housing
Posted by MICHAEL STRAWN on Feb 21st 2025
Very nice product just what you expect from RiffRaff
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4 Happy
Posted by Unknown on Feb 20th 2025
I would suggest a gasket come with it
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5 Great fit
Posted by Charles on Feb 13th 2025
Worked great it’s a nice well built piece only down side I would say is it doesn’t come with a gasket so if you plan on changing your out make sure you buy a gasket as well
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5 Get This And Forget the Leaks
Posted by STEPHEN NOVAK on Feb 1st 2025
Works perfectly. Zero leaks is exactly what I wanted after fighting the stamped units for a while. This is the long term fix. Plus it looks great.
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5 Thermostat Cover
Posted by Unknown on Nov 23rd 2024
Exactly what you would expect when buying from Riffraff Diesel. Fast shipping, amazing product quality and packaging.
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5 Best Quality Thermostat Housing
Posted by Jason on Jun 27th 2024
I had tried one off Amazon, and one from Sinister Diesel, both leaked. This one from Riffraff Diesel is by far the best, and stopped my leak permanently. Quality and machining is also the best I have seen. Stainless hardware is also a very nice tough.
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4 Fit
Posted by Matt on Jun 18th 2024
Would have been nice if it came with a new o-ring.
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5 Nice and solid
Posted by Brian on Apr 15th 2024
Nicely constructed and much more solid than the stock piece.
