MHX Series High-Efficiency Oil Cooler Configurator

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Part #
MHX Series Configurator
  • Use this configurator to customize your Improved Racing MHX Series Oil Cooler setup.
  • Choose compatible fittings, mounting brackets, fan kits, and other accessories.
  • MHX Series oil coolers are more compact, lighter, and have a lower air side pressure drop than stacked plate coolers.
  • Lifetime Warranty. Made in the USA.
Part # MHX Series Configurator
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Improved Racing MHX Series Oil Cooler Configurator
MHX Series High-Efficiency Oil Cooler Configurator

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    Improved Racing's Motorsport Heat Exchanger (MHX) series oil coolers are the result of several years of development and testing to create a highly efficient oil cooler. These coolers were perfected through extensive testing on our in-house heat exchanger test system and wind tunnel.

    A major design focus was to minimize welds and brazings to make these coolers stronger, lighter, and less prone to leaks. End caps are single-piece CNC-machined billet aluminum. The rows consist of laser-welded, thin-gauge aluminum tubes stuffed with turbulators to maximize heat transfer while minimizing weight. The core is 23% thinner than typical stacked plate coolers and has a lower row and fin density, allowing more air to flow through the cooler to other heat exchangers (such as a radiator) behind it. Overall, these coolers are lighter and more compact than stacked plate coolers from other brands, while providing similar heat rejection rates.

    All coolers feature M8x1.25 mm mounting holes. Improved Racing has designed lightweight mounting brackets (sold separately) to make mounting your cooler as easy as possible. The brackets feature integrated rubber isolators that protect the cooler from excessive vibration and extend the life of the cooler.

    Most coolers feature -10AN female O-ring boss ports on the same side of the end tank for convenient line routing. Optional fittings are available in -6AN, -8AN, -10AN, and -12AN JIC male flare threads. The MHX-245 and MHX-245C coolers feature male -10AN JIC flare ports welded to the cooler.

    All Improved Racing oil coolers are pressure tested to 175 PSI to ensure no leaks and are rated for continuous operation at 150 PSI. Our coolers are made in the USA and backed by our Lifetime Warranty.

    MHX Oil Cooler End Caps
    CNC-machined billet aluminum tank end caps with machined mounting holes on all four corners

    Available ORB Fittings
    3/8" or 1/2'' hose barb fittings or AN fittings in -06AN, -08AN, -10AN, or -12AN are free with the purchase of a cooler

    Improved Racing MHX Oil Cooler Mounting Brackets
    Vibration isolating mounting brackets available (sold separately)

    Features and Benefits

    • Lighter and more compact than stacked plate oil coolers with similar heat rejection rates
    • Single-pass, dual-pass, and triple-pass designs available
    • Lower air side pressure drop than stacked plate coolers
    • Female O-ring boss or welded male -10AN ports
    • 4x flanged M8 mounting screws are included
    • Lifetime Warranty
    • Made in the USA

    Dimensions and Specifications

    Improved Racing MHX-5XX Dimensions

    Part # Rows HP Range A (Height) Weight Capacity Mounting Holes
    MHX-514 14 300-410 HP 6.94 in (176.3 mm) 2.9 lbs (1.3 kg) 0.75 Qt (0.71 L) M8 x 1.25
    MHX-520 20 400-480 HP 9.73 in (247.1 mm) 3.8 lbs (1.7 kg) 1.04 Qt (0.98 L) M8 x 1.25


    Drop Ship ItemNo
    Special Order ItemNo
    ManufacturerImproved Racing
    Construction TypeFlat stuffed tube and fin
    Primary MaterialAluminum
    Test Pressure175 psi (12.07 bar)
    Maximum Operating Pressure250 psi (17.24 bar)
    Maximum Temperature Rating302°F (150°C)
    Minimum Temperature Rating-40°F (-40°C)
    Fluid CompatibilityCoolants
    Engine oil
    Gear oil
    Power Steering Fluid
    Transmission fluid
    Mounting Hole SizeM8 x 1.25
    Instruction Manuals
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