Riffraff Diesel 7.3L Billet Thermostat Housing 99-03 7.3L F-Series 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!

Ford F81Z8592AA
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Thermostat housing
Pretty clean little set up, built way better then stock thermostat housing
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Looks good. Works good.
Very happy with the thermostat housing. Well-made and looks great!
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Looks good!
I got the billet thermostat housing for my 2003 F250 7.3L since the original started rusting. It looks great, fits great, and appears to be very good quality. Looking forward to getting more Riff Raff Diesel parts!
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Fits good nice bolts stoped the leak looks clean
The stock bolts stripped out on me so i had to cut them out. clean product and a good company shipped the same day i think
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Good
Far superior to another brand billet housing that I ran for years.
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Billet Thermostat Housing
Very nice product just what you expect from RiffRaff
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Happy
I would suggest a gasket come with it
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Great fit
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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Get This And Forget the Leaks
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.






