BMW 3 5 7 Series Z3 E36 E38 E39 E46 M52 Petrol Throttle Body Housing 1433414

BMW 3 5 7 Series Z3 E36 E38 E39 E46 M52 Petrol Throttle Body Housing is an original intake system component designed for BMW M52 petrol engines used in the popular E39 and E46 models. As a part from the Throttle Bodies category, it is responsible for precise air metering to the engine, which translates into stable engine operation and proper throttle response. This used OEM component is a sensible choice for drivers looking for a technically matched solution at an attractive price.

Specifications and technical data

• SKU: 1433414
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1433414
• Substitutable numbers: 13541433414, 1433414, KZ
• Fuel type: Petrol
• Category: Throttle Bodies

Function and role of the throttle body in the M52 engine

The air throttle body in the M52 petrol engine controls the amount of air drawn into the intake manifold, thereby influencing the air-fuel mixture and the engine's refinement. A properly functioning throttle body ensures:

• stable idle speed,
• smooth response to accelerator pedal input,
• consistent performance across the entire rev range,
• proper cooperation with the engine control system.

For BMW M52 petrol engines, using the correct throttle body is crucial for maintaining proper dynamics and predictable vehicle behavior in daily operation.

Compatibility with BMW E39 and E46

The offered BMW air throttle body has been designed to work with M52 petrol units installed in BMW E39 and E46 models. This ensures factory-fit compatibility with the intake manifold, wiring harness, and engine ECU, which facilitates installation and reduces the risk of adaptation issues.

In practice, this means that with a correctly matched engine and accessories, a plug-and-play approach can be applied – after installation and potential adaptation in the ECU, the engine regains proper throttle response and operational stability.

Application in petrol engines

The component is intended for petrol engine fuel systems, where precise control of airflow has a direct impact on fuel consumption, exhaust emissions, and driving comfort. Compared to universal replacements, the original BMW throttle body ensures:

• compliance with injection and ignition maps prepared for the M52,
• proper cooperation with sensors and control electronics,
• preservation of the engine operating characteristics intended by the manufacturer.

For users who want to restore the factory performance parameters of the engine, choosing an original throttle body is a technically justified solution.

Characteristics of the used component

The offered throttle body is a used original part, sourced from vehicle dismantling. This type of part allows for an economical repair of the intake system while maintaining the design and quality intended by BMW. In many cases, it is a beneficial alternative to cheap replacements with uncertain parameters.

Before installation, standard service procedures are recommended, such as checking the cleanliness of the airflow channel and the seals of the connections with the intake manifold, in order to fully utilize the component's potential and avoid leaks that affect engine operation.

Expanding the BMW intake system

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional throttle bodies, control elements, or supplementary intake components, check the available parts in the BMW Throttle Bodies category.

For drivers interested in a broader context of selecting used powertrain components, including comparing the purchase of original used parts with refurbishment, the following guide article may be helpful: Manual transmission failures – why an original used part is often a better choice than refurbishment.