FLH Milwaukee 8 2017-Current
3.0 Dual Fan Assisted
Side Mount on Down Tube


UltraCool is back and better than ever with its new M8 FLH Oil Cooler, The 3.0! Some cool new features include:

  • Fits FLH Milwaukee 8 Frames 2017-current, Oil Cooled Engine
  • Side Mount on Down Tube
  • Beautiful Chrome or Powder Coated Black Grill Cover hide and protect the heat exchanger and fans
  • 3.0 Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when your oil reaches 210 degrees. UltraCool’s goal is to keep your oil at the optimal temperature of between 210 and 230 degrees.
  • 3.0 Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation
  • 3.0 Sealed Waterproof IP68 Dual Fans producing an amazing 220 CFM of airow
  • 3.0 plug and play wiring harness with relay and waterproof connectors that all connects to the battery under the seat for simple installation.
  • 3.0 Black nylon coated stainless steel braided oil lines with AN6 fittings.
  • 3.0 L.E.D. indicator light indicates when the fans are operating. (toggle or clamp handlebar LED mounts sold separately.)
  • Special designed Oil Line Fitting Wrench and detailed instructions included.


1 year parts only warranty from date of purchase.
Enjoy our 30 day “no hassle” return/exchange policy.

*If you don’t see your bike listed – call for fitment

SKU: FLH Milwaukee 8 SMT8-1 Category:


FLH Touring Models Fan Assisted Oil Cooler

The Reefer Harley Oil Cooler is the best Harley-Davidson® Oil Cooler system in the USA. Drop your motorcycle oil temp up to 50 degrees and save your bike from over heating!

UltraCool prides itself on producing the highest quality oil cooler in the market today. With our continuing pursuit and desire to improve our product, we have upgraded our FLH oil cooler with plenty of new features that include dual IP68 waterproof fans increasing air flow to 220 CFMs, a more durable thermal switch with built in wiring, plug n play wiring harness with waterproof connectors,  a highly rated Viton o-ring gasket with improved parts for our oil adapter, and a higher quality LED Light.

Harley Davidson oil cooler includes:

Additional information


FLH Milwaukee 8 2017-current Oil Cooled Engine


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3.0 Dual Fan Assisted
Side Mount on Down Tube”

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