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    FX3300 Series Electric Cooling Fans

    with

    Integrated Shrouds

    Engineered through decades of real-world Jeep conversion experience, the FX3300 Series electric fans with integrated shrouds are precision-fit to our Novak KryoFlow radiators. These assemblies deliver the most efficient and effective cooling performance we've ever achieved in converted Jeeps.

    Each fan and shroud assembly is precision-built to integrate seamlessly with Novak KryoFlow conversion radiators. This tight, custom fit maximizes airflow efficiency and heat extraction—both when the fan is running and when the vehicle is moving at speed.

    Compared to unshrouded fans, our integrated designs increase airflow through the radiator by 40-50%. The shroud captures more radiator surface area and focuses airflow through a tighter exit zone, enhancing both active and passive cooling.

    Behind that, we've attached a powerful world class Maradyne® 16" S-blade fan (9" for the XJ fan below) to pull a constant large volume of air through the radiator, ensuring optimal cooling. They are world-class built and feature a 3-year product warranty.

    These shrouds are designed exclusively for Novak KryoFlow radiators. Fitment to other radiators is not supported or recommended.

    Fan for Novak's K-CJ Series CJ Radiators

    CJ radiator electric cooling fan
    FX3300-C
    Jeep CJ

    Built for Novak's #K-CJ conversion radiators.

    Fan for Novak's K-YJ Series Wrangler Radiators

    YJ TJ Jeep electric cooling fan
    FX3300-T
    Jeep Wrangler

    Built for Novak's #K-YJ conversion radiators.

    Fans for Novak's K-XJ Series XJ & MJ Radiators

    XJ MJ Cherokee Commanche electric cooling fan
    FX3400-X
    Jeep Cherokee XJ

    Built for Novak's XJ / MJ conversion radiators.

    For the XJ/MJ platform, the fan shroud is fully integrated and welded to the radiator during assembly, resulting in a stronger and more reliable system. Because of this, the radiator and shroud must be purchased together.

    Fan for Novak's K-TJ Series Wrangler Radiators

    YJ TJ Jeep electric cooling fan
    FX3300-T
    Jeep Wrangler

    Built for Novak's #K-TJ conversion radiators.

    Fans for Novak's K-SJ Series Radiators

    Electric fans for FSJ Jeeps
    FX3300-F
    FSJ Wagoneer Jeep

    Built for Novak's FSJ Truck & Wagoneer conversion radiators.

    Fans for Novaks K-ECJ Series Radiators

    Electric cooling fan for Early CJ V6 conversions
    FX3300-EC
    Early CJ Jeep

    Built for Novak's Early CJ conversion radiators.

    Related Products


    Electric fan controller sensor relay kit

    Sensor kit, engine coolant temperature, with wiring harness, relay and terminals, switches at 195F

    This is a terrific standalone temp sensor, controller and relay kit for our FX series fans. It's best suited for classic engines that don't have PCM fan control. It features a 30 amp & 40 amp fuse option. Switches on at 195F.

    FC-FRH195
    Electric fan controller sensor relay kit

    Sensor kit, engine coolant temperature, with wiring harness, relay and terminals, switches at 185F

    This is a terrific standalone temp sensor, controller and relay kit for our FX series fans. It's best suited for classic engines that don't have PCM fan control. It features a 30 amp & 40 amp fuse option. Switches on at 185F.

    FC-FRH185
    Auto transmission cooler

    Kit, Cooler, auxillary, transmission, 29,200 BTU, with fittings

    For every 10 degrees cooler you can keep your automatic, you add 25k miles to their life. This stacked plate style cooler is both rugged and efficient, and it's flanges make it easier to set up than other styles of cooler. See related cooler lines, adjacent. For more info click here

    K-OC-H7B-D
    Auto transmission cooler

    Kit, Cooler, auxillary, transmission, 30,000 BTU, with fittings

    For every 10 degrees cooler you can keep your automatic, you add 25k miles to their life. This stacked plate style cooler is both rugged and efficient, and it's flanges make it easier to set up than other styles of cooler. See related cooler lines, adjacent. For more info click here

    K-OC-H7B-N

    Kit, automatic transmission cooler lines, braided stainless, 2 lines, 74” OAL ea, -6AN female thread fittings

    Tough, flexible stainless lines with easy sealing AN fittings. We've installed these on so many Jeeps and they're an in-and-done type product and compatible with our #OC-H7B cooler, adjacent.

    TR-FLX
    Stainless coolant overflow tank

    Tank, overflow, polished stainless, 3” x 10”, includes cap and bracketry

    This is the overflow tank we reach for when doing a conversion in pretty much any Jeep. We love the stainless steel construction, simplicty and ease of mounting. They take up little room and can tuck into a variety of locations. It will outlast all of those cheap plastic ones from the factory.

    OT6082

    Installation Requirements

    When ordered with its matching radiator, your fan and shroud will arrive pre-installed—ready to drop in.

    If installing separately:

    • Requires a rivet gun and #11 drill bit for 3/16" rivets
    • Fan removal requires 7/16" wrench or socket
    • Electrical connections can be crimped or soldered
    • Ensure wire gauge is appropriate for the fan's amperage draw
    • Always wear eye protection and observe general safety protocols during installation

    Fan Control Recommendation

    For modern fuel-injected engines, the fan should be controlled by the ECM via a relay—this is how we configure our own harnesses, using heavy-duty 70-amp relays.

    For carbureted or non-ECM setups, we offer standalone sensor kits above, or you may use your own system. Just be sure the switch and wiring can handle the full current draw.

    Some users opt to add a manual bypass switch for deep water crossings. While this can damage lightweight fans, we've seen no failures with our heavy-duty S-blade or SPAL units.

    Also See