BMW E88 F10 F20 F21 F30 F31 F12 F13 F25 N55 Crankshaft Position Sensor 7582842

BMW E88 F20 F21 F31 F12 F25 N55 Crankshaft Position Sensor is a precise component from the Engine Sensors & Switches group, responsible for accurate crankshaft position reading in BMW N55 engine units. A properly functioning sensor ensures stable engine operation, correct fuel injection control, and reliable starting in various operating conditions.

Specifications and technical data

• SKU: 7582842
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7582842
• Substitutable numbers: 7582842, 13627582842
• Category: Engine Sensors & Switches

Function and Significance of the BMW N55 Crankshaft Position Sensor

The crankshaft position sensor in BMW N55 engines is responsible for generating a reference signal for the engine control unit (ECU), which uses it to determine the crankshaft's rotational angle and speed. This is crucial data for:

• precise fuel injection and ignition control,
• maintaining smooth idle operation,
• proper functioning of traction control and power management systems,
• trouble-free cold and hot starting.

In BMW E88, F20, F21, F31, F12, and F25 models with the N55 engine, a functional crankshaft position sensor directly impacts the unit's running smoothness, throttle response, and overall drivetrain reliability.

Selection and Compatibility within the BMW Group

The offered component comes from the BMW OE line, meaning it maintains factory operating parameters and is fully compatible with the electrical and mechanical architecture of N55 units. The sensor is designed to work with the original BMW engine control unit, ensuring:

• the correct signal shape and amplitude for the ECU,
• elimination of errors resulting from incorrect aftermarket sensor characteristics,
• easier diagnostics – sensor readings are consistent with factory service procedures.

By using an original solution, you can reduce problems typical of cheaper alternatives, such as occasional engine stalling, hesitation during acceleration, or difficulty starting after the engine has warmed up.

Condition, Verification, and Installation Recommendations

This item is a used component from a dismantled vehicle, offered as a used OEM component, allowing for a reasonable cost while maintaining factory specifications. Before being offered for sale, the sensor is verified for the condition of its connectors, housing, and its ability to be correctly installed in the N55 engine.

When replacing the crankshaft position sensor, it is recommended to:

• thoroughly clean the mounting bore in the engine block,
• inspect the wiring harness for abrasions and contact corrosion,
• perform adaptation/error clearing in the ECU after installation,
• check engine operating parameters through diagnostics after the first start.

This approach minimizes the risk of recurring faults related to the position signal and allows for the full utilization of the installed sensor's potential.

Benefits of Using an Original Sensor in BMWs with N55 Engines

Using an original crankshaft position sensor in N55 units provides tangible operational benefits:

• stable engine operation across the entire RPM range, without random power drops,
• improved starting consistency – especially important for daily city driving,
• proper interaction with safety systems that rely on engine speed data,
• reduced risk of ECU errors related to crankshaft and camshaft synchronization.

For owners who want to maintain their BMW E88, F20, F21, F31, F12, or F25 in good technical condition, choosing an original sensor from the Engine Sensors & Switches group is a sensible solution in terms of durability and predictable performance.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as temperature sensors, pressure switches, or other engine unit sensors, check the available parts in the BMW Engine Sensors & Switches category.

Technical Support and Expert Knowledge

When diagnosing engine operation issues, it is advisable to use reliable sources of knowledge and proven procedures for selecting parts by OEM and reference numbers. Expert materials explaining when it is worthwhile to opt for aftermarket components and how to assess their value compared to new parts can be helpful – the article Why Buying Used Gearboxes and Engines is Worthwhile – Facts Instead of Myths discusses this topic in more detail.

If you are interested in a broader context of operating and servicing engine accessories in other premium brands, including Mercedes-Benz, you will find useful information in the guide Reliability Under the Star – How to Care for Engine Accessories in Popular Mercedes-Benz C-Class and E-Class Models?, which shows the significant importance of using appropriately selected, tested components in modern engine units.