Riffraff Diesel 7.3L Billet Thermostat Housing

Part Number:



Riffraff Diesel 7.3L Billet Thermostat Housing

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 hardward is also provided.

Write a Review

49 Reviews Hide Reviews Show Reviews

  • 5
    As usual from RiffRaff

    Posted by Unknown on Sep 3rd 2018

    Great part. Great fitment. Unbeatable price. Super fast shipping. There is only one place to go for your PowerStroke. The part went on great, no leaks. No problems.

  • 5
    Just what the doctor ordered

    Posted by Unknown on Aug 25th 2018

    After multiple failed attempts and leaks with new parts house thermostat and housing I decided to spend the money and get the billet housing. With coolant being nearly $20/gal I should have done this mod first! No leaks what so ever...very nice piece. I would recommend the oem motorcraft thermostat as well with the built in gasket. All in all very pleased. My only gripe is the hex head bolts but that's neither here nor there. I was told it was a 3/16 hex, but I found a 5mm to fit more snugly.

  • 5
    Once again top notch quality

    Posted by FastEddie on Aug 5th 2018

    Buy this and it’s for life. Done. I’m out..

  • 5
    Best Replacement

    Posted by JAMES on Jul 31st 2018

    was a great replacement for that old steel stock unit.

  • 5
    Built Riffraff Tough

    Posted by Brett on Jul 25th 2018

    Against every warning, I went cheap and bought a T-Stat housing from one of the common automotive box shops. 2 failed attempts to get a good seal with RTV later, I finally did what I should have done in the first place. This thing epitomizes the strength and reliability of the engine that it was designed for. Save yourself the extra time and wasted money.

  • 5
    Added Improvement

    Posted by Unknown on Jun 12th 2018

    My stock steel housing was rusting and I wondered when then leaks would start. Very nice improvement over stock. It's a shame it's not very viseable. Very well built.

  • 5
    Rubber gasket

    Posted by Larry on Jun 4th 2018

    Do you use the OEM gasket or none?

  • 5
    Nice housing, quick shipping

    Posted by Unknown on May 25th 2018

    Product was of good quality and finish. Fit well. Wish standard bolts were used in lieu of hex heads to make it easier to tighten and torque.

  • 5
    Great service

    Posted by Sean Magill on May 24th 2018

    I purchased my first one for my wife's truck. After it came and I say the quality I ordered a another one for my Ford Excursion. If you use a stock OEM Thermostat you do not need any other O-ring's or gaskets. The OEM Thermostat has the rubber O-ring built into it. Great product. No leaks.