Audi Cooling Fan Assembly - Genuine Audi VW 4H0121207B

Product Information

The Engine Cooling Fan Assembly is a crucial component of a vehicle’s cooling system. It consists of an electric or mechanical fan, shroud, motor, and related wiring or clutch mechanism. Its main role is to pull or push air through the radiator to regulate coolant temperature, especially when the vehicle is idling or moving at low speeds where natural airflow is limited.

Key functions:

• Prevents engine overheating by maintaining proper coolant temperature.
• Assists air conditioning performance by cooling the condenser.
• Supports overall engine efficiency and longevity.

• Engine overheating – temperature gauge rises, especially in traffic or at idle.
• Air conditioning performance drops – AC blows warmer air when the fan isn’t running.
• Fan not turning on – visible when checking under the hood, even when the engine is hot.

About Genuine VW Audi

The Volkswagen Group, also known as “VAG”, consists of Volkswagen, Audi, Lamborghini, Bentley, Bugatti, Porsche, Ducati, MAN, Scania, SEAT, and Skoda. The original parts used by VAG to build your car are available as replacement parts under the “Genuine VAG” brand. Manufactured under the direction of VAG, expect excellent quality and a premium price since these parts are available exclusively through the VAG Dealership network.

You may not realize this, but the parts that make up your VAG are not necessarily manufactured by VAG. No cause for concern, as VAG designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for VAG for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine VAG parts box and find an OEM branded part inside, simply with the addition of a VAG logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.