Automotive crankshaft phase eccentric shaft sensor replacement part for BMW 1 Series 3 Series X1 X3 Z4 models with black colour and specific model 11377506503 compatibility
BMW Crankshaft Phase Eccentric Shaft Sensor Replacement Part 11377506503

This automotive sensor component is manufactured as a replacement for the original crankshaft phase eccentric shaft sensor found in several BMW vehicle models. Designed specifically for BMW's engine management systems, it serves the same function as the factory-installed part when replacement becomes necessary. The black-coloured housing is typical for under-bonnet automotive electronics, providing a discrete appearance once installed. Vehicle owners and technicians looking for this specific part should note the model number 11377506503 to ensure correct compatibility with their BMW's engine system.
Features and Construction

This sensor is built to match the specifications of BMW's original equipment for monitoring crankshaft position and phase. The construction follows automotive standards for components that operate in engine bay environments with temperature variations and vibration.
Material and Build
The sensor housing utilises black-coloured materials commonly found in automotive electronic components, typically moulded plastic or composite suitable for under-bonnet conditions. Internal components include the sensing mechanism and electrical connectors designed to interface with BMW's engine control systems. The build quality matches replacement part standards for this automotive application.
Size and Practical Fit
While exact dimensions are not specified in the source material, the sensor is designed as a direct physical replacement for the original BMW component. The mounting points and connector orientation match factory specifications for straightforward installation. Technicians should expect it to occupy the same space as the removed original sensor without modification to surrounding components.
Uses and Placement

This sensor serves a specific function within BMW's engine management system, monitoring crankshaft position to help determine ignition timing and fuel injection sequences. Proper operation is essential for engine performance, emissions control, and starting reliability.
Event or Professional Use
Automotive workshops and BMW specialists will use this sensor when diagnosing and repairing engine management faults related to crankshaft position sensing. Common scenarios include replacing failed sensors causing check engine lights, rough running, or starting difficulties on compatible BMW models. The specific part number allows professionals to quickly identify the correct replacement component.
Everyday Home Use
For BMW owners performing their own maintenance, this sensor provides a solution when the original crankshaft phase sensor develops faults. Installation requires automotive knowledge and appropriate tools, as the sensor is typically mounted on the engine block or transmission housing. Correct installation ensures the engine management system receives accurate crankshaft position data for optimal operation.
Benefits and Buying Value

This replacement sensor offers a practical solution for BMW owners facing crankshaft sensor-related issues. The value comes from restoring proper engine function without requiring dealership parts, provided compatibility is confirmed.
Reuse and Low Maintenance
As a replacement electronic component, this sensor is installed as a complete unit rather than requiring ongoing maintenance. Once correctly fitted and connected, it should function without adjustment throughout its service life. The black housing colour maintains the standard appearance of BMW engine bay components.
Why Choose This Product
This sensor is selected primarily for its specific compatibility with BMW vehicles identified by part number 11377506503. For owners of BMW 1 Series, 3 Series, X1, X3, or Z4 models requiring this particular sensor, it provides a direct replacement option. The single-unit packaging includes just the sensor itself, keeping the component simple and focused on its core replacement function.





