Mercedes W169 W203 W204 W639 Diesel Engine Boost Pressure MAP Sensor A0061531528

The Mercedes OM640 OM646 Diesel MAP Sensor is a component from the air and fuel intake sensors category, designed for Mercedes diesel engines. It is responsible for precise measurement of intake manifold pressure, allowing the engine control unit to properly dose fuel and ensure stable engine operation. This is a practical choice for users seeking a proven, original solution for Diesel systems.

Specifications and technical data

• SKU: A0061531528
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0061531528
• Substitutable numbers: A0061531528, A 006 153 15 28
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Air Intake & Fuel Sensors

Function and Role of the MAP Sensor in a Diesel Engine

The MAP sensor in OM640 and OM646 engines measures air pressure in the intake manifold and then transmits the signal to the engine control unit. Based on this, the control system selects the fuel dose, injection timing, and boost strategy, which affects engine smoothness, dynamics, and fuel consumption. A functional sensor helps reduce smoke, improves throttle response, and stabilizes idle speed.

In diesel engines, correct boost pressure reading is crucial for protecting the turbocharger and injectors. Replacing a worn or damaged component with an original MAP sensor designed for specific Mercedes engines restores correct parameters for the fuel and intake system.

Intended Use, Installation, and Location

The presented MAP sensor is dedicated to Mercedes diesel engines from the OM640 and OM646 families, used in popular Diesel models. The component is mounted in the front of the vehicle, within the intake system, which facilitates service access and diagnostics. Thanks to factory-fitted compatibility with the electrical system and intake manifold, installation is straightforward, without the need for modifications.

When replacing, it is recommended to:

• check the condition of the electrical connector and wiring harness for corrosion and insulation damage,
• clean the mounting socket of carbon deposits and contaminants,
• perform adaptation / error clearing in the engine control unit after installation, if the service procedure requires it.

Benefits of Using an Original MAP Sensor

Using a dedicated MAP sensor in a Diesel engine brings tangible operational benefits. A properly selected component helps maintain correct combustion parameters, which translates to:

• more stable engine operation across the entire RPM range,
• better cooperation with the turbocharger and injection system,
• reduced risk of overboost or underboost,
• a lower probability of boost pressure-related errors.

An original component from the air and fuel intake sensors category is designed with the specific operating parameters of OM640 and OM646 engines in mind, which facilitates diagnostics and subsequent service.

Condition, Verification, and Selection by Numbers

The offered MAP sensor is a used part, sourced from disassembly, allowing for economical repair while maintaining original manufacturer specifications. Before installing in the vehicle, it is advisable to verify compatibility by OEM part number and available replacement numbers, as well as compare the housing shape and connector type with the currently installed component. This approach minimizes the risk of selecting the wrong component and speeds up the repair process.

For users who wish to deepen their knowledge of diagnostics and fuel system component selection, an article describing the operation of the fuel system, injectors, and pumps will be helpful – you can find it here: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair. It allows for a better understanding of the relationships between sensors and other Diesel engine components.

Other Mercedes Air and Fuel Intake Sensors

If you are looking for other air and fuel intake sensors for this brand's vehicles, check out the dedicated category Mercedes air and fuel intake sensors, where you will find a wide selection of components tailored to various models and engine versions.