Audi A3 S3 8V VW Golf Mk7 MAP Boost Pressure Sensor 2.0 Petrol 03G906051D

Audi A3 S3 8V VW Golf Mk7 MAP Boost Pressure Sensor is a precision component from the Air and fuel intake sensors category, responsible for the accurate measurement of pressure in the boost system of petrol engines. A properly functioning sensor supports stable engine operation, optimizes fuel dosage, and improves engine performance. This solution is designed for users who expect a proven, original component for petrol supply systems.

Specifications and technical data

• SKU: 03G906051M
• Mark: Audi
• Condition: Used
• OEM Part Number: 03G906051M
• Substitutable numbers: 03G906051M, 03G 906 051 M
• Fuel type: Petrol
• Category: Air Intake & Fuel Sensors

The role of the boost pressure sensor in a petrol engine

The boost pressure sensor in petrol engines works with the engine control system, providing it with information about the current air pressure in the intake manifold. Based on this, the controller selects the appropriate fuel dosage and adjusts the ignition timing, which results in:

• stable engine operation across the entire rev range,
• correct throttle response,
• maintaining the proper air-fuel mixture ratio,
• reducing the risk of knocking and power loss.

In vehicles such as the Audi A3 / S3 8V and VW Golf Mk7 with petrol engines, a properly functioning boost pressure sensor is crucial for performance, fuel consumption, and engine durability.

Benefits of using an original Audi sensor

The offered component comes from the Audi line, which means it maintains factory operating parameters and full compatibility with the engine control system. In practice, this translates into:

• accurate reproduction of factory characteristics – no need for parameter adaptation in the controller,
• consistency with the injection and boost maps intended for a given petrol engine,
• certainty of fitment to the mounting socket and electrical harness,
• reduced risk of diagnostic errors related to an incorrect sensor signal.

For users who want to restore factory performance and engine stability, using an original sensor is a safe and predictable solution in terms of operation.

Application in petrol supply systems

The presented sensor is designed for petrol-powered engines, where the engine controller uses the signal from the boost pressure sensor to control turbocharger operation and fuel dosage. In practice, this is particularly important in direct fuel injection units, where:

• precision of pressure measurement affects injection dosage and exhaust emissions,
• a correct sensor signal limits the occurrence of limp mode,
• stable pressure values support smooth acceleration without jerking.

In the event of symptoms such as power loss, a check engine light, or errors related to boost pressure or mixture, replacing the boost pressure sensor is one of the key diagnostic steps.

Condition and selection of the component

The item is offered in used condition, which allows for an economical repair while maintaining the manufacturer's original specifications. Before installation, it is recommended to perform a standard check of the intake system (tightness of hoses, condition of electrical connectors) so that the new sensor operates under proper conditions. It is worth basing the selection of parts on vehicle data and manufacturer markings to ensure full compatibility with the specific version of the petrol engine.

Technical support and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as air temperature sensors, mass air flow sensors, or mixture control elements, check the available parts in the Audi air and fuel intake sensors category.

For a better understanding of how the supply system works and the connections between the boost pressure sensor and other elements, it is worth reading our guide: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. The article helps organize knowledge about diagnostics, selecting parts by part numbers, and the principles of fuel system operation.