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Ford 6.4L Powerstroke Coolant Hose Kit 2008-2010

  1. 6.4L Powerstroke Silicone Hose Upgrade, Part 2: Product Completion and Final Design

    6.4L Powerstroke Silicone Hose Upgrade, Part 2: Product Completion and Final Design

    Interested in picking up our 6.4L Powerstroke coolant hose kit? Check out our product page linked below!

    Mishimoto Ford 6.4L Powerstroke Silicone Coolant Hose Kit

    Our full prototype unit has arrived and is ready for some final test fitting! Before introducing our final product, let's take one last look at the stock hose setup.

    Stock 6.4L radiator hoses
    Stock 6.4L radiator hoses

    Now, check out the Mishimoto prototype kit!

    Mishimoto prototype 6.4L radiator hoses
    Mishimoto prototype 6.4L radiator hoses

    A few interesting things to note. First, we have replaced several of the bends that were previously plastic with our silicone hose. Instead of incorporating the bends into the quick disconnect fittings, we are using the hose to make all the bends.

    Also, the stock hose uses a double O-ring connection on the engine-side quick disconnects. On the radiator side, the stock still uses a single O-ring system. We use double O-ring connections on both ends of our hoses for better protection against leaks and to reduce the chance of air entering the cooling system of

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  2. 6.4L Powerstroke Silicone Coolant Hose Upgrade, Part 1: Initial Development

    6.4L Powerstroke Silicone Coolant Hose Upgrade, Part 1: Initial Development

    Interested in picking up our 6.4L Powerstroke coolant hose kit? Check out our product page linked below!

    Mishimoto Ford 6.4L Powerstroke Silicone Coolant Hose Kit

    6.4L Engine bay with Mishimoto aluminum radiator
    6.4L Engine bay with Mishimoto aluminum radiator

    The Project Begins

    Looking to pair your 6.4L aluminum radiator with a nice set of silicone hoses? We thought so! After developing a variety of components for the 6.4L Powerstroke, we decided to take a closer look at the radiator hoses on this truck.

    After Ford released this truck in 2008, there were numerous complaints about leaking hoses. Ford issued a technical service bulletin (TSB) that offered a fix: a set of replacement hoses with an additional O-ring for better sealing power. This modification was made to the engine-side fitting of the hose, while the radiator-side still retained the single o-ring design. The replacement hoses seemed to solve the problem.

    Stock 6.4L Powerstroke radiator hose
    Stock 6.4L Powerstroke radiator hose

    That said, the stock hoses still feature plastic quick-connect ends that lock into

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