Ultracool M8 Side Mount Oil Cooler - Touring `2017-2023 Chrome

Ultracool M8 side-mount oil cooler for 2017-2023 Harley Touring models with Milwaukee-Eight engines. Works alongside the stock cooler to maintain optimal oil temperature during traffic and city riding by adding a secondary cooling circuit with dual thermostat-controlled fans.

Features

• Dual-pass aluminum heat exchanger with turbulators
• Thermostat-controlled dual fans engage at 210°F, disengage at 185°F
• 220 CFM airflow from sealed IP68 waterproof fans
• Side mount on down tube below engine guard top bar
• Chrome or black powder-coated grill cover protects heat exchanger
• Plug-and-play wiring with relay and waterproof connectors
• Black nylon-coated stainless steel braided oil lines with AN6 fittings
• LED indicator light shows when fans are running
• Includes oil line fitting wrench and detailed instructions

Specifications

• Brand: Ultracool
• Manufacturer Part #: SMT8-1C
• Length: 11 in
• Width: 9 in
• Height: 6 in
• Weight: 8 lbs
• Finish: Chrome

Fitment

Fits 2017-2023 Harley-Davidson Touring models (FLH frames) with Milwaukee-Eight engines equipped with oil coolers. Requires full-size engine guards and will not fit models with lower fairings.

Frequently Asked Questions

Will this fit my Touring with lower fairings?

No — this cooler is designed for full-size engine guards only. Models with lower fairings are not compatible.

Does this work with the stock oil cooler or replace it?

It works in conjunction with the stock cooler as a secondary cooling circuit to handle heat that the factory cooler alone cannot manage.

How hard is the installation?

The plug-and-play wiring harness connects to the battery under the seat. Detailed instructions and a special oil line fitting wrench are included for a straightforward bolt-on install.

At what temperature do the fans turn on?

The thermostat engages the fans at 210°F and keeps them running until oil cools to 185°F, maintaining optimal engine oil temperature between 200–230°F.

What finish options are available?

Chrome grill cover or black powder-coated finish. A naked version without grill cover is also available.