BMW 3 Series E46 320d M47N Radiator Fan Cooling Unit 7801423

The BMW 3 Series E46 320d M47N Radiator Fan is an original cooling system component designed for installation in the front of the vehicle. It ensures stable heat dissipation from the radiator, which is crucial for the safe operation of the diesel engine. Thanks to its factory BMW design, this radiator fan assembly integrates with other system components without requiring modifications.

Specifications and technical data

• SKU: 7801423
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7801423
• Substitutable numbers: 17117801423, 7801423, 17117790896, 7790896, 17117786009, 7786009, 17112246793, 2246793, BG
• Location on the vehicle: Front

Purpose and Function in the Cooling System

The presented fan assembly is specifically designed for the BMW 3 Series E46 320d with the M47N engine. Its purpose is to force airflow through the radiator, especially in urban conditions, at low driving speeds, and during intensive engine load. Its placement at the front of the vehicle allows for efficient use of airflow and precise control of the engine's operating temperature.

Construction and Mounting Fit

The radiator fan assembly is a complete unit integrated with its housing, prepared for installation at the factory mounting points in the front end of the BMW E46. The OEM construction guarantees:

• correct fit with the radiator and engine accessories,
• preservation of the original airflow geometry,
• proper interaction with the covers and body elements in the engine bay.

This ensures a streamlined installation process, without the need for bracket adaptation or vehicle system modifications.

Benefits of Using an Original BMW Fan

Using a factory fan assembly in the BMW 3 Series E46 320d M47N translates into a range of practical operational advantages:

• Stable engine operating temperature – a properly functioning fan reduces the risk of engine overheating in traffic jams and under heavy load.
• Compatibility with vehicle electronics – the original part is adapted to the control parameters specified by the manufacturer.
• Reduced unwanted vibrations and noise – the factory design minimizes vibrations transferred to the body.
• Consistency with other cooling system components – no need to modify hoses, covers, or mounts.

This solution is particularly recommended for repairs where maintaining the original cooling system operating parameters and long-term reliability are paramount.

Condition, Verification, and Service Application

This part is a used, original BMW component. Such components are often chosen by workshops specializing in the BMW brand, as they allow for maintaining factory quality at a reasonable repair cost. Before installation, a standard check of the electrical system and the overall condition of the cooling system is recommended to fully utilize this component's potential.

If you are planning a more extensive repair or upgrade for your car and want to select other original used parts in one place, check out the guide on how to assemble used car parts for BMW in a One-Stop-Shop formula. Additionally, to optimize your service budget, it's worth reading the article on saving on repairs with used OEM parts, which shows how to safely use the secondary market.