• Spin-On Fuel Filter Kit for all M939 and M809 Trucks

    $255.00

    Spin-On Fuel Filter Conversion Kit – Fits M939, M939A1, M939A2 & M809 Series Trucks

    Upgrade your military truck’s fuel filtration system with this spin-on fuel filter conversion kit, designed to replace the outdated canister-style fuel filters. This kit simplifies maintenance, improves filtration efficiency, and gives you full control over your fuel cleanliness with a list of compatible filters from Wix and other major brands.

    Choose the right kit for your truck:

    • M939 & M939A1 with the 250 Cummins

    • M939A2 with the 8.3 Cummins – different fuel lines required

    • Dual fuel tank configurations have specific fuel line routing

    • M809 series trucks use the M939A1 kit – direct fit, no modifications needed

    Key Features:

    • Replaces factory canister fuel filters with modern spin-on filters

    • Includes a full list of Wix filter numbers with micron ratings

    • Easy cross-reference to other major filter brands

    • Custom-tailored filtration: choose the micron level that fits your engine and fuel quality needs

    • Simplifies maintenance and improves long-term reliability

    Perfect for military vehicle restorers, off-road operators, and anyone seeking a more efficient and user-friendly fuel system.


    Product video The video shows the older two-piece mount.  The new mounts are one piece 3/8" aluminum angle.  Much stronger and nicer looking. 

    Customer Video This is a video made from one of my longtime customers who recently bought a few kits.

    What's in the box?
    • New dual spin on fuel filter mount
    • New fuel lines from the fuel tank to the filter heads and from the filter heads to the injection pump
    • If you are ordering one for a truck that has dual fuel tanks the new fuel line will go from the filter heads to the splitter valve
    • Complete list of usable filters with micron rating and a highlight of what I use on my personal truck

    Please select your model of truck to ensure you get the right unit for your application.

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