Wheel Arch Radiator BMW X3 F25 X4 F26 Right O/S Additional Auxiliary Cooler

Visual condition of the part

The product shows signs of use visible in the photos.

Wheel Arch Radiator BMW X3 F25 X4 F26 Right O/S Additional Auxiliary Cooler is an original cooling system component, mounted on the right side of the vehicle. It ensures stable heat dissipation from critical components, supporting the main cooling system and improving the operating conditions of the engine and auxiliary equipment. Thanks to the factory BMW design, this part is precisely fitted to the wheel arch and the designated mounting location.

Specifications and technical data

• SKU: 7823546
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7823546
• Substitutable numbers: 7823546, 17117823546
• Location on the vehicle: Right
• Category: Other Air & Fuel Delivery

Purpose and function in the BMW X3 F25 / X4 F26

The presented Wheel Arch Radiator BMW X3 F25 X4 F26 Right O/S Additional Auxiliary Cooler is designed for BMW X3 F25 and BMW X4 F26 models, where it acts as a supplementary heat exchanger within the right wheel arch. Its task is to relieve the main radiator by taking on part of the thermal load from selected systems, which helps maintain a stable operating temperature across a wide range of operating conditions.

The placement on the right side of the vehicle allows for effective use of the airflow around the wheel arch, while simultaneously protecting the radiator from direct mechanical damage. This is a factory-applied solution by BMW in versions requiring increased cooling efficiency.

Construction and mounting fitment

The radiator has been designed as an OEM component, with geometry adapted to the space in the wheel arch and factory mounting points. This means:

• a compatible shape and dimensions adapted to the right wheel arch,
• designated spots for standard brackets and mounts,
• connections prepared for compatibility with original cooling system hoses.

As a result, installation is straightforward, without the need for structural modifications or the use of non-factory adapters. Proper airflow within the wheel arch is also maintained, which is crucial for cooling effectiveness.

Benefits of using an original auxiliary radiator

Using an original auxiliary radiator in the BMW X3 F25 / X4 F26 translates into a number of practical operational benefits:

• More stable operating temperatures – support for the main cooling system under high thermal load conditions.
• Better protection for components prone to overheating, which promotes their durability.
• Factory fitment for the right wheel arch, minimizing the risk of leaks and improper airflow.
• Consistency with the original BMW design concept, without interfering with the load-bearing structure or body elements.

The used part allows for an economical repair while maintaining the original BMW specification, which is particularly important for vehicles where compliance with factory solutions is a priority.

Part selection and integration with the vehicle system

To ensure the proper operation of the cooling system, it is essential to match the radiator to the specific version of the BMW X3 F25 or X4 F26 and the correct side of installation. The presented component is intended for installation on the right side of the vehicle, in the wheel arch area, where it works with factory hoses, covers, and air ducts.

During replacement, it is recommended to check the condition of hoses, clamps, and mounting elements to maintain system tightness and correct coolant flow. A properly selected and installed auxiliary radiator supports even distribution of thermal load throughout the entire system.

Expanding the BMW cooling system – related parts

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other components from the same group, such as main radiators, fluid hoses, or additional heat exchangers, check the available parts in the Other BMW category.

To compare design solutions used in sports versions of other brands, including cooling, engine, and chassis, it is worth reading an article discussing the differences between standard and sports versions: Audi RS vs other models – what is hidden under the hood and chassis?.

If you want to better understand the importance of original components in the context of safety and durability, the material dedicated to OEM part quality may also be helpful: Quality assurance and OEM safety – why are used original car parts the best choice for your car?.