Genuine BMW 11-37-7-524-880 Eccentric Shaft Sensor Wheel for Valvetronic System

The Genuine BMW Eccentric Shaft Sensor Wheel (part number 11-37-7-524-880) is a critical component of the Valvetronic variable valve lift system found in BMW engines. This magnetic sensor wheel mounts directly onto the eccentric shaft and works in conjunction with the eccentric shaft position sensor to enable the engine control unit (DME) to precisely monitor the position and rotation of the eccentric shaft.

Function and Purpose:

• Provides magnetic reference points for the eccentric shaft position sensor to monitor shaft angle and rotation
• Enables the DME to track eccentric shaft movement through approximately 225 degrees of rotation
• Critical for proper Valvetronic system operation, which controls variable intake valve lift without a traditional throttle body
• Allows precise control of valve lift from minimum to maximum positions for optimal engine performance, fuel economy, and emissions

Key Features:

• Genuine BMW OEM component ensuring exact fit and proper magnetic properties
• Designed for BMW Valvetronic-equipped engines including N51, N52, and N52N engine families
• Precise magnetic encoding for accurate shaft position feedback to the engine control module
• Manufactured to BMW's stringent quality standards for reliability and durability

This sensor wheel is essential for proper Valvetronic system calibration and operation. When the eccentric shaft sensor wheel becomes damaged, worn, or loses its magnetic properties, it can trigger fault codes such as P1014 (Eccentric Shaft Sensor Reference) or P1017 (Eccentric Shaft Sensor Plausibility), resulting in poor engine performance, rough idle, hesitation, and check engine lights. Replacement requires valve cover removal and proper Valvetronic system adaptation using BMW diagnostic equipment after installation.