MHX-206 High-Efficiency Oil Cooler

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MHX-206 High-Efficiency Oil Cooler

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. 

The MHX-206 "Baby" oil cooler is an efficient, single-pass cooler ideal for power steering, differential, and transmission fluid cooling in a very compact space. It's also ideal for oil cooling on small engines such as motorcycles, ATV's, go karts, etc. The MHX series coolers are smaller, lighter, and have more fluid capacity than stacked-plate style coolers of similar performance. 

A major design focus was to minimize welds and brazings to make these coolers stronger, lighter, and less prone to leaks. All four 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. 

There are four M8x1.25 mm mounting holes, one on each corner of the cooler. Improved Racing has designed lightweight aluminum 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. 

The MHX 200-series coolers feature -10AN female O-ring boss ports and a single-pass design to minimize pressure drop. Optional fittings are available in -6AN, -8AN, -10AN, and -12AN JIC male flare threads. 

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. 

CNC-machined billet aluminum tank end caps with machined mounting holes on all four corners

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

Vibration isolating mounting brackets available (sold separately)

Features and Benefits

  • Higher pass-through airflow rate than stacked plate coolers
  • Female O-ring boss -10AN ports on side of end tank
  • 4x flanged M8 mounting screws are included
  • Lifetime Warranty
  • Made in the USA

Dimensions and Specifications

Part # Rows




(Total Height)


(Port Spacing)


Fittings /






MHX-206 6 Up to 100 HP 3.25 in (82.55 mm) 0.90 in (22.9 mm) 1 -10AN O-Ring Boss 1.0 lb (0.45 kg) 0.23 Qt (0.22 L) M8 x 1.25


Part #
Improved Racing
Part Weight
1.00 lb (0.45 kg)
Primary Material
Construction Type
Flat stuffed tube and fin
Number of Passes
Core Width
4.5" (114mm)
Core Height
3.25'' (83 mm)
Core Thickness
1.55" (39.4 mm)
Fitting Size
-10AN Female O-Ring Port
Test Pressure
175 psi (12.07 bar)
Maximum Operating Pressure
250 psi (17.24 bar)
Maximum Operating Temperature
302°F (150°C)
Minimum Operating Temperature
-40°F (-40°C)
Fluid Compatibility
Engine oil
Gear oil
Power Steering Fluid
Transmission fluid
Fluid Capacity
0.23 Qt (0.22 L)
Mounting Hole Size
M8 x 1.25
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Click to call: 843-484-3617

Click to Text: 843-484-3617

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