Audi Rs4 B7 4.2 Petrol Engine Cooling Radiator Coolant Fan Right O/S 8E0959455H

Audi Rs4 B7 4.2 Petrol Engine Cooling Radiator Coolant Fan Right O/S is an original component from the Fans and fan housings group, designed to operate in a demanding, high-revving petrol engine. It provides stable support for the cooling system, which translates into a safe operating temperature for the power unit and predictable vehicle performance in both city and highway conditions.

Specifications and technical data

• SKU: 8E0959455H-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0959455H
• Substitutable numbers: 8E0959455H, 8E0 959 455 H
• Location on the vehicle: Right
• Fuel type: Petrol
• Part type: Fan & Clutch Assembly
• Category: Fan & Shroud Assemblies

Purpose and function in the cooling system

The presented radiator fan has been designed to work with a large-displacement petrol engine, where the thermal load is significantly higher than in lower-power units. The component is responsible for forced airflow through the radiator core, especially in situations where natural cooling from airflow is insufficient – such as in traffic jams, during dynamic acceleration, or at high ambient temperatures.

Positioning on the right side of the vehicle allows for precise alignment with the factory radiator frame and shrouds, which limits airflow losses and supports uniform heat dissipation from the entire system.

Benefits of using an original fan

Using an original fan in a sports model with a petrol engine provides a number of practical benefits:

• Stable engine operating temperature – properly selected airflow reduces the risk of overheating under high load.
• Consistency with the factory cooling system – maintaining the fan operating characteristics specified by the manufacturer.
• Proper fitment to mounts and housing – no need for modifications or adaptations.
• Better cooperation with electronic control systems – predictable switching on and off depending on coolant temperature.

Thanks to this, replacing with an original component allows for the restoration of correct cooling parameters without interfering with the vehicle's construction.

Operating characteristics in a petrol engine

Petrol engines, especially those with large displacements, generate a significant amount of heat in a short time. The radiator fan designed for a petrol unit is adapted to this load profile – it operates in a wider temperature range and more frequently enters higher rotational speeds to maintain stable thermal conditions.

In practice, this means:

• efficient heat dissipation after intense acceleration,
• better protection of engine auxiliary components against overheating,
• more predictable vehicle behavior on hot days, including in city traffic.

Selection, installation, and application

The fan is intended for installation on the right side of the vehicle, which is crucial for matching the specific radiator and housing configuration. Proper placement ensures the correct direction of airflow and compatibility with factory shrouds and air ducts.

When selecting the component, it is worth paying attention to compatibility with the cooling system of the given unit, in particular with the type of petrol engine and the construction of the fan frame. Using parts from the same product group allows for maintaining assembly consistency and reducing the time required for replacement.

Cooling system expansion and related components

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as additional fans, housings, or mounting frames, check the available parts in the Audi fans and fan housings category.

To better understand how high ambient temperature affects cooling system efficiency and when it is worth considering the installation of a used fan, read the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, where you will find practical tips regarding the operation and selection of cooling components.