ULTRACOOL M8 Naked Oil Cooler
Keep your M8 running cooler, longer. The ULTRACOOL M8 Naked Oil Cooler works with the stock cooler to reduce oil temperatures for FLH Milwaukee 8 frames (2017–current), delivering the reliability and performance of a fully liquid-cooled motor while preserving factory lines.
Key Features
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Fitment: Designed for FLH Milwaukee 8 frames 2017–current (oil-cooled and air/oil-cooled kit options available).
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Side mount: Installs on the down tube for efficient airflow without bulky front placement.
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Naked or Covered: “Naked” version ships without a grill/cover; optional chrome or powder-coated black grill covers protect the heat exchanger and fans.
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Thermostatic control: Waterproof thermal switch activates dual fans at 210°F and runs until oil cools to 185°F for automatic temperature management.
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Optimal operating range: Designed to keep oil between 200–230°F for improved engine longevity and performance.
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High-efficiency exchanger: Dual-pass aluminum heat exchanger with turbulators maximizes heat dissipation.
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Powerful, waterproof fans: IP68 sealed dual fans deliver 220 CFM for dependable cooling in traffic and city riding.
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Plug-and-play wiring: Complete harness with relay and waterproof connectors connects to the battery under the seat for simple installation.
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Durable lines & fittings: Black nylon-coated stainless steel braided oil lines with AN6 fittings.
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Accessories included: L.E.D. indicator light with black perch mount, oil adapter, special oil line fitting wrench and detailed instructions.
Why choose ULTRACOOL? Engineered to complement your stock cooling system, the M8 Naked Oil Cooler prevents overheating in stop-and-go conditions and extends engine life — a must-have upgrade for riders who demand consistent performance in all conditions.
