BMW Crankshaft Phase Eccentric Shaft Sensor: Direct Replacement Part Model 11377506503

This crankshaft phase eccentric shaft sensor, identified by part number 11377506503, is manufactured as a direct replacement component for several BMW models, including the 1 Series, 3 Series, X1, X3, and Z4. It fulfils a critical role within the engine management system by providing real-time data on the crankshaft's position and phase to the vehicle's electronic control unit (ECU). This information is fundamental for calculating optimal ignition timing and fuel injection parameters, which directly influence engine efficiency, performance, and adherence to emission standards. As an on-board diagnostics (OBD2) compliant part, it also facilitates the accurate identification of potential engine faults, aiding in maintenance and troubleshooting.

Features and Construction

This sensor is designed for a direct fitment into the engine bay of compatible BMW vehicles, matching the original equipment manufacturer (OEM) specifications for connectivity and mounting. The source information confirms the sensor's housing is finished in black, aligning with typical automotive sensor aesthetics.

Material and Build

The sensor is constructed from automotive-grade electronic components encased in a durable housing. The materials are selected to endure the operational environment of an engine compartment, which includes exposure to vibration, thermal cycles, and potential fluids. The black finish is standard for such components.

Size and Practical Fit

While specific physical dimensions are not provided in the source material, the sensor is described as a direct replacement. This implies its form factor, connector type, and mounting points are engineered to match the original part it supersedes, ensuring it integrates seamlessly into the vehicle's existing wiring harness and engine layout without modification.

Uses and Placement

The primary application for this sensor is as a service part in vehicle repair and maintenance scenarios for the listed BMW models. It is a critical component for restoring proper engine management function.

Event or Professional Use

This part is suited for professional automotive workshops and skilled DIY mechanics undertaking engine management system repairs on BMW vehicles. Its correct installation is essential for resolving check engine lights related to crankshaft position sensor faults, restoring drivability, and ensuring the vehicle meets emission test requirements.

Everyday Home Use

For the knowledgeable home mechanic with the correct tools and access to vehicle-specific service information, this sensor provides a cost-effective means to address a failed crankshaft sensor on their compatible BMW. Successful replacement can resolve issues like hard starting, rough idle, or reduced fuel economy linked to faulty sensor data.

Benefits and Buying Value

Purchasing this sensor offers a targeted solution for a specific mechanical need, based on the confirmed vehicle compatibility and part number.

Reuse and Low Maintenance

As a replacement electronic component, it is not designed for reuse after failure but for a single installation. Its value lies in restoring the vehicle's original function. Proper installation following manufacturer guidelines is the primary factor influencing its operational lifespan, as no specific durability data is provided.

Why Choose This Product

This sensor is chosen for its precise match to the OEM part number (11377506503) and confirmed application across several popular BMW model lines. It addresses a clear need for a replacement component that supports the engine's core timing and diagnostic functions, without claiming enhancements over the original design.