Softail Milwaukee 8 2018-Current3.0 Dual Fan Assisted Side Mount on Down Tube


SKU: M8 Softail Category:

**Covered versions do not fit on Softail ST models (must use Naked version)

The M8 engines come with oil coolers that circulate oil to the heads and the majority of the oil returns to the stock oil cooler.  The stock oil cooler simply is not enough to keep the M8s from overheating in traffic and city riding.  Unlike our UltraCool Oil Coolers for the Twin Cams that replaces a stock oil cooler, our Side Mount UltraCool Oil Coolers for the M8s work with the stock cooler to cool all of the oil.  This works incredibly well and with a FLO Oil Filter our 3.0 UltraCool Oil Coolers give the M8 engines the performance of a FULLY liquid cooled!  Don't believe that bold statement?  Just read the reviews by clicking on "Reviews" at the top of the page

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

  • Fits Softail Milwaukee 8 Frames 2018-Current
  • Side Mount on Down Tube
  • Beautiful Chrome or Powder Coated Black Grill Cover hide and protect the heat exchanger and fans.  "Naked" (no covers) version does not have a cover or grill
  • 3.0 Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when your oil reaches 210 degrees and they stay on until the oil is cooled to 185 degrees. UltraCool's goal is to keep your oil at the optimal temperature of between 200 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 airflow
  • 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.
  • LED mount included in kit.
  • Chrome or Black 1" clamp handlebar LED mounts sold separately.
  • Special designed Oil Line Fitting Wrench and detailed instructions included.

 You may also need:

  • Check out this electrical connector you may need:  #SMB-Y128
  • Check out these Oil Filters for additional cooling: PCS4B, PCS4C, and PCS4BC

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

FLH Touring Models Fan Assisted Oil Cooler

The UltraCool 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: