Radiator Fan W166 for Mercedes-Benz

OEM-spec radiator cooling fan assembly for the Mercedes-Benz W166 platform — ML-Class (2012–2015) and GLE-Class (2015–2019). The module includes the electric fan motor, blade, and shroud to deliver factory airflow across the radiator and A/C condenser. Direct-fit replacement for noisy, weak, or non-operational fans.

What this is / isn’t:

• Included: 1× complete cooling fan assembly

Key Features:

• OE Geometry & Airflow: Shroud contouring focuses air through the radiator/condensed pack for proper engine and A/C temps.

• High-Efficiency Motor: Matches Mercedes current draw and speed mapping for ECU control.

• Balanced, Low-Noise Blade: Minimises vibration and cabin drone.

• Plug-and-Play Connector: No splicing; locks into the factory harness.

• Durable Build: Heat-resistant plastics and sealed bearings for long service life.

Compatibility:

• ML-Class (W166) — 2012–2015

• GLE-Class (W166) — 2015–2019

• Engines: petrol and diesel variants as per OE reference.
  Some X166 GL/GLS (2013–2019) share the same fan on matching engines — confirm by VIN/OE number before purchase.

Typical OE Reference Families (guide only):

• A166-906-xx-xx, A166-906-28-00 / 31-00 / 52-00, etc.
  (Always order by the exact number stamped on your original fan or confirm via VIN.)

When to replace:

• Overheating at idle/with A/C on

• Fan runs at full speed constantly or never engages

• Excessive noise, wobble, or burnt smell from the motor

• Cooling/fan circuit fault codes stored

Installation Notes (Pro Tips):

• Disconnect the battery before removal.

• Lift out the old assembly carefully to avoid bending radiator fins.

• Transfer any rubber grommets/air seals from the old shroud if required.

• Inspect connector pins for heat damage or corrosion; repair as needed.

• After install, warm engine to operating temperature and verify fan staging and A/C performance.

What’s Included / Not Included:

• ✅ Complete W166 cooling fan assembly

• ❌ Control module (if separate), radiator/condenser, bolts, or wiring

Q&A
Q1: Will this fit my GLS/GL (X166)?
A1: Many X166 models share the fan with W166 on the same engines, but confirm by VIN or OE number to be safe.
Q2: Do I need coding?
A2: No coding is required for the fan itself; it’s ECU-controlled. Ensure any separate fan control module is healthy.
Q3: My fan is noisy—could it be the bearings?
A3: Yes. Bearing wear causes growl or wobble. Replace the assembly to prevent shroud/radiator damage.
Q4: Is it plug-and-play?
A4: Yes—match by OE number and it bolts in with the original connector and mounts.