BMW F20 F21 F30 F31 N20 Petrol Engine Oil Level Sensor 7638341

BMW F20 F21 F30 F31 N20 Petrol Engine Oil Level Sensor is a precision component of the lubrication system, responsible for reliable measurement of the oil quantity in the N20 petrol engine. Thanks to this sensor, the engine control unit receives a stable signal regarding the current oil level, which supports the safe operation of the power unit and facilitates diagnostics. This solution is intended for users who expect consistent cooperation with BMW factory electronics and proper integration with the oil monitoring system.

Specifications and technical data

• SKU: 7638341
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7638341
• Substitutable numbers: 12617638341, 7638341, 12617636294, 7636294, 12617598860, 7598860, 12618608779, 8608779
• Fuel type: Petrol
• Category: Oil Filters

Purpose and function of the oil level sensor

The presented sensor is dedicated to N20 petrol engines installed in BMW F-series models, such as the F20, F21, F30, or F31. Its task is to continuously monitor the oil level in the oil pan and transmit information to the control unit and the onboard system. A properly functioning sensor allows for:

• early detection of a low oil level,
• reducing the risk of the engine running with insufficient lubrication,
• more accurate planning of service and inspection of the power unit's condition.

By being matched to a specific fuel type, the sensor works with the operating characteristics of the N20 petrol engine, ensuring stable readings under typical operating conditions.

Compatibility and integration with the lubrication system

The sensor has been designed for full integration with the factory lubrication system and BMW electronics. The appropriate body geometry and the correct type of electrical connector allow for installation in the location provided by the vehicle manufacturer, without the need for any modifications to the installation. This type of solution:

• facilitates the preservation of the original lubrication system architecture,
• reduces the risk of leaks in the oil pan area,
• ensures proper cooperation with the vehicle's diagnostic system.

The item comes from the Oil filters group, which emphasizes its connection to the control and maintenance of proper engine oil parameters in the vehicle.

Performance characteristics and installation benefits

Choosing an original BMW solution for oil level measurement translates into predictable vehicle behavior in daily operation. The sensor works with the driver warning system, so information about any irregularities appears on the instrument cluster or in the onboard computer menu. Key benefits include:

• maintaining the factory logic of oil level messages,
• better engine protection against the effects of lubricant shortage,
• easier diagnostics in the event of errors related to the lubrication system.

The used product allows for an economical restoration of the oil level measurement system's efficiency while maintaining the original BMW specification.

Professional application in service and diagnostics

The oil level sensor is an important element in the work of workshops specializing in the BMW brand, especially when servicing N20 petrol units. Replacing a faulty sensor with a functional unit of this type:

• eliminates false oil level messages,
• facilitates the correct interpretation of data from the diagnostic system,
• supports the process of assessing engine condition during periodic inspections.

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 oil filter inserts, filter housings, or gaskets related to the lubrication system, check the available parts in the BMW Oil filters category.

Technical support and additional information

When working with the engine lubrication and cooling system, it is worth paying attention to related components that affect the durability of the power unit. To better understand the relationships between engine operating temperature, oil quality, and component lifespan, read the article Engine cooling system – overheating, repair, and used radiators, which discusses practical aspects of operation and service.

If you are considering a wider use of aftermarket elements in your service or tuning project, the guide Buying used car parts – common mistakes when choosing parts for tuning may also be helpful, allowing you to consciously select used components and avoid typical problems.