BMW Z4 E89 Roadster Lower Bottom Air Flap Duct Control Cover 7213472

BMW Z4 E89 Roadster Lower Bottom Air Flap Duct Control Cover is an original air duct system component designed for vehicles with a petrol engine. Designed by BMW, this lower air duct cover supports proper cooling of components and stabilizes airflow in the undercarriage area, which is important for both component durability and driving comfort.

Specifications and technical data

• SKU: 7213472
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7213472
• Substitutable numbers: 51747213472, 7213472, BG
• Fuel type: Petrol
• Category: Other Exterior Parts & Accessories

Purpose and function of the component

The presented BMW Z4 E89 Roadster Lower Bottom Air Flap Duct Control Cover is dedicated to the BMW Z4 E89 Roadster model with a petrol engine. This component operates in the lower part of the body, in the area of the air ducts, where it is responsible for directing the airflow to selected zones of the undercarriage and engine compartment.

A properly functioning air duct helps to:

• maintain stable thermal conditions in the vicinity of the engine and accessories,
• reduce air turbulence under the car,
• maintain the aerodynamic integrity of the lower part of the body.

Construction and fitment for the BMW Z4 E89 Roadster

The BMW Z4 E89 Roadster Lower Bottom Air Flap Duct Control Cover has been developed as part of the original air management system in the BMW Z4 E89 Roadster, ensuring a precise fit to factory mounting points. The construction is prepared for operation in undercarriage conditions, where the component is exposed to variable temperatures, moisture, and road debris.

Proper alignment with other covers and air ducts reduces unwanted play, minimizes the risk of noise, and supports the maintenance of the factory airflow geometry in the lower zone of the vehicle.

Performance characteristics and installation

As a part from the covers and air ducts group, the BMW Z4 E89 Roadster Lower Bottom Air Flap Duct Control Cover is intended for installation in place of the factory component. This allows for the restoration of proper cooling system operation and aerodynamics after mechanical damage, disassembly, or wear of the previous cover.

The main advantages of using the original lower flap include:

• maintaining the airflow characteristics designed by the manufacturer,
• compatibility with other elements of the air duct system,
• possibility of service replacement without the need for body modifications.

Condition and application in petrol vehicles

The offered component comes from the used parts group, which allows for an economical repair of the air management system while maintaining the original BMW design. The flap is intended for vehicles powered by petrol, in accordance with the factory purpose for this version of the Z4 E89 Roadster model.

Selecting the correct lower flap for a specific car configuration should always be preceded by verifying compatibility with the vehicle's service documentation or consulting a mechanic to ensure the proper operation of the entire air duct system.

System expansion and selection of other components

If you are planning a comprehensive repair or upgrade of the undercarriage area in your BMW and need other components from the same group, such as additional covers, air ducts, or bottom plates, check the available parts in the Other BMW category.

For drivers interested in comparing technical solutions used in various brands and models, including sports designs, an article discussing the differences in the construction of powertrains, braking systems, and chassis may be helpful – details can be found in the post Audi RS vs other models – what is hidden under the hood and chassis?.