BMW F20 F21 F30 F31 LCI B47 Exhaust Pressure Sensor Engine 8570936

BMW F20 F21 F30 F31 LCI B47 Exhaust Pressure Sensor Engine is an original BMW exhaust system component, designed for precise monitoring of exhaust parameters in B47 engines after the facelift. Thanks to its factory origin from BMW, this sensor ensures proper cooperation with the engine electronics and stable measurement values, which translates into the correct operation of the exhaust gas treatment system and the maintenance of performance. This is a solution for users who are looking for a proven OEM component instead of random replacements.

Specifications and technical data

• SKU: 8570936
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8570936
• Substitutable numbers: 13628570936, 8570936, EM
• Category: Other Engine Parts

Purpose and function of the exhaust pressure sensor

The exhaust pressure sensor in the B47 engine is responsible for measuring the pressure in the exhaust system, which is crucial for the proper operation of the engine control unit and emission control systems. Based on the signal from this component, the ECU can:

• monitor the load on the exhaust system and the filling level of the diesel particulate filter,
• adjust the injection and boost strategy,
• initiate DPF regeneration procedures,
• react to leaks or irregularities in exhaust flow.

A properly functioning sensor helps maintain stable operation of the B47 unit, reduce the risk of entering limp mode, and prevent excessive fuel consumption.

Compatibility with BMW F20, F21 and F3 LCI series

The presented sensor has been designed for BMW F20, F21 models and selected variants of the F3 series after the facelift (LCI) equipped with the B47 engine. This means that the design, electrical connector, and mounting method are matched to the factory solutions used in these generations.

Thanks to this, with proper selection for a specific car configuration, installation is possible in a plug & play format, without the need for modifying the installation or creating custom mounts. In practice, this translates into shorter service time and a lower risk of installation errors.

Characteristics of the used component

The offered exhaust pressure sensor is an aftermarket part, sourced from dismantling. Such OEM components are frequently chosen by BMW users who want to maintain original build quality while optimizing repair costs compared to a new part from an authorized service center.

Before resale, sensors of this type are usually verified for the correctness of connectors, housing, and mounting capability, which allows for their further trouble-free use in the vehicle, provided they are selected according to the specifications of the given unit.

Benefits of using an original BMW sensor

Using an original exhaust pressure sensor in the B47 engine brings a number of practical benefits:

• Full compatibility with the control unit software – no need to adapt characteristics as is the case with many replacements.
• Appropriate operating parameters under typical operating conditions of B47 units in BMW F20, F21 and F3 LCI series.
• Reduced risk of errors related to the exhaust system and diesel particulate filter.
• Possibility to maintain the consistency of the entire exhaust system based on OEM components.

For workshops and users, this means a more predictable repair result and easier diagnostics in the future.

Related system components and further expansion

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 sensors, vacuum lines, or exhaust control elements, check the available parts in the Other BMW category.

When selecting components for modern units such as the B47, it is also worth paying attention to the differences in design and parameters between standard and sports versions – you can read more about this approach to designing powerful engines in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers differentiate their engine ranges.

If you are interested in optimizing service costs while maintaining high quality, the guide Rising repair costs and the boom in used parts – how to save on car service? may also be helpful, describing a practical approach to choosing used OEM components, such as sensors in the exhaust system.