Mini F55 F56 MAP Sensor Cooper S Manifold Air Pressure Sensor F45 F48 8637899

Mini F55 F56 MAP Sensor Cooper S Manifold Air Pressure Sensor F45 F48 is a component from the Air and fuel intake sensors group, designed for use in BMW and Mini petrol engines. It is responsible for the precise measurement of pressure in the intake manifold, which allows the engine control unit to properly dose fuel and ensures stable operation of the powertrain. This is a solution for users looking for a proven component with factory performance characteristics.

Specifications and technical data

• SKU: 8637899
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8637899
• Substitutable numbers: 13628637899, 8637899, 13628605613, 8605613, BG
• Fuel type: Petrol
• Category: Air Intake & Fuel Sensors

The role of the MAP sensor in the intake and fuel system

The MAP pressure sensor in a petrol engine measures the pressure in the intake manifold and sends a signal to the engine control unit. Based on this, the ECU calculates the amount of air drawn in by the engine, corrects the fuel dose, and adjusts the ignition timing. A properly functioning sensor helps maintain stable idle speed, smooth acceleration, and reduce fuel consumption.

In BMW and Mini vehicles from the F-series, the MAP sensor is particularly important for the correct operation of the turbocharging system, throttle response, and compliance with emission standards. Its failure can result in power loss, jerking, increased fuel consumption, or the check engine light coming on.

Compatibility and identification by part numbers

The presented sensor belongs to the group of original BMW components, which facilitates the selection of parts based on the OEM number and interchangeable numbers. This allows for precise matching of the element to a specific engine version and vehicle year, minimizing the risk of installation problems or reading errors.

In practice, this means that when selecting a sensor, you can use both the part number and the reference numbers used interchangeably in BMW and Mini catalogs. This is particularly important when servicing modern petrol units, where the compatibility of electrical parameters and measurement characteristics has a direct impact on engine performance.

Benefits of using an original sensor in a petrol engine

In petrol-powered engines, the precision of intake manifold pressure measurement is crucial for the correct operation of the injection system. Using a MAP sensor dedicated to a specific BMW or Mini model allows you to:

• maintain the correct air-fuel mixture ratio across the full load range,
• reduce the risk of knocking and improper ignition operation,
• preserve factory acceleration dynamics and throttle response,
• decrease fuel consumption under typical operating conditions,
• reduce the number of errors recorded in the engine control unit.

For users who want to keep their car in a technical condition as close to the factory state as possible, choosing such a sensor is a safe and predictable solution in terms of operating parameters.

Component condition and practical installation tips

The offered sensor belongs to the group of used parts, which allows for reducing repair costs while maintaining characteristics close to the factory ones. Before installation, it is worth paying attention to the condition of the electrical connector, the socket in the intake manifold, and the tightness of the seal to avoid false readings resulting from leaks or circuit breaks.

When replacing, it is recommended to:

• check the electrical harness for chafing and contact corrosion,
• clean the mounting socket of oil deposits and impurities,
• clear errors in the engine control unit after installation and perform a test drive,
• compare the current parameters of the sensor with reference values in a diagnostic tester.

Expanding knowledge and selecting fuel system components

When diagnosing engine performance problems, it is worth looking more broadly at the entire fuel system. A detailed discussion of the operation of injectors, pumps, and the fuel tank, as well as practical tips on selecting parts by OEM and VIN number, can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. This is a useful supplement to knowledge for the comprehensive service of modern petrol units.

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 air temperature sensors, boost pressure sensors, or other intake path components, check the available parts in the BMW Air and fuel intake sensors category.

For drivers interested in economical service for premium cars, while still wanting to stick with OEM components, the material describing current trends in the used parts market may also be helpful: why used original components for BMW and other premium brands are gaining importance. It allows for better planning of repair strategies and making informed choices between new and used elements.