Eccentric Shaft BMW E81 E87 E90 E91 Petrol N46 Camshaft Sensor 7527016

Eccentric Shaft BMW E81 E87 E90 E91 Petrol N46 Camshaft Sensor is a precision component of the timing control system in BMW petrol engines, responsible for the accurate reading of the eccentric shaft position in the variable valve timing system. Thanks to this sensor, the engine control unit can stably and repeatably control valve operation, which translates into engine performance, smooth operation, and fuel efficiency. This solution is dedicated to selected 1, 3, and X3 series models, designed specifically to meet BMW's engineering requirements.

Specifications and technical data

• SKU: 7527016
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7527016
• Substitutable numbers: 11377527016, 7527016, 11377513783, 7513783, 11377506503, 7506503
• Fuel type: Petrol
• Category: Camshafts

Function of the Eccentric Shaft BMW E81 E87 E90 E91 Petrol N46 Camshaft Sensor in a BMW petrol engine

The eccentric shaft sensor in BMW petrol engines is responsible for monitoring the position of the shaft that regulates valve lift. Based on the signal from this component, the engine control unit can:

• precisely adjust timing phases to current load and engine speed,
• optimize cylinder filling with the air-fuel mixture,
• stabilize engine operation at idle and during acceleration,
• reduce fuel consumption while maintaining proper dynamics.

A functional sensor in the BMW petrol timing system allows for maintaining proper synchronization of valve operation with ignition and injection, which has a direct impact on engine durability and driving comfort.

Compatibility with BMW models and timing system

The presented sensor has been developed for use with the timing system in selected BMW 1, 3, and X3 series models equipped with petrol engines featuring valve lift regulation. The component's design is matched to the geometry of the cylinder head and the mounting socket, which enables:

• trouble-free installation in place of the factory sensor,
• proper positioning relative to the eccentric shaft pulse wheel,
• stable electrical connection with the engine wiring harness.

By maintaining factory signal parameters, the sensor works with the original engine control unit, ensuring consistency with the factory timing control logic.

Characteristics of the used component

The offered Eccentric Shaft BMW E81 E87 E90 E91 Petrol N46 Camshaft Sensor is a used part from disassembly, which allows for an economical repair of the timing system while maintaining the manufacturer's original specifications. In practice, this means the possibility of:

• restoring the correct operation of the variable valve timing system without interfering with the engine mechanics,
• eliminating problems with unstable idle or power loss resulting from incorrect shaft position readings,
• reducing service costs while maintaining compliance with BMW factory solutions.

Choosing an original, used component allows for maintaining consistency of electrical and mechanical parameters with the rest of the system, which is particularly important in precision timing control systems.

Importance for diagnostics and timing system durability

A functional eccentric shaft sensor is crucial for the diagnostics and protection of the engine unit. An incorrect signal from this component can lead to error codes in the control unit, the engine entering limp mode, and in extreme cases, improper timing control. Replacing it with a functional component allows you to:

• minimize the risk of the control unit misinterpreting the shaft position,
• obtain reliable data for further timing system diagnostics,
• maintain proper engine operating parameters across the full rev range.

In the context of typical timing problems in BMW units, it is worth familiarizing yourself with practical tips regarding diagnostics and repair described in the article BMW N47 timing chain – typical failure and repair using original BMW parts, which discusses the relationships between the condition of the timing system, accessories, and symptoms in daily operation.

BMW timing system expansion and selection of other elements

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 position sensors, control elements, or cooperating system components, check the available parts in the BMW Camshafts category.

For drivers who are thinking about improving throttle response and better utilizing the potential of the engine unit, general tips regarding engine modifications and accessory selection may also be useful. In such a case, it is worth reaching for the guide How to increase engine power: a practical guide to engine tuning with used parts, which discusses a safe approach to changes in the drivetrain in an accessible way.

Summary

Eccentric Shaft BMW E81 E87 E90 E91 Petrol N46 Camshaft Sensor is a dedicated timing system component in BMW petrol engines, ensuring an accurate reading of the position of the shaft responsible for valve lift regulation. Using an original, used component allows for a technically correct and economical repair, restoring the proper operation of the timing control system and the stability of the engine's operating parameters.