Walker 225-1351 Manifold Absolute Pressure Sensor

OE Replacement MAP Sensor for Audi

Walker Products 225-1351 is a manifold absolute pressure sensor built for OE replacement service. It measures intake manifold pressure and sends that signal to the ECM so the engine can calculate load and adjust fuel delivery and ignition timing.

This Sensor Only line from Walker focuses on direct-fit electrical and connector compatibility for Audi applications, including Audi A8 Quattro, S4, S5, SQ5, Q7, Q8, S6, S7 Sportback, A6 allroad, A6 Quattro, A7 Sportback, S7, and Q5. The 225-1351 is engineered for the specified connector shape, terminal layout, and pressure-sensing function needed for a clean replacement.

Key Features

• Manifold Absolute Pressure sensor for engine load input
• OE replacement design for accurate signal output and connector fit
• Black plastic body with oval female connector
• 3 blade terminals, plug-in fitting, 1 port
• Built for high engine bay temperatures, vibration, and intake air contaminants
• Walker Products part number 225-1351

Detailed Description

Walker Products 225-1351 is a MAP sensor that helps the ECM interpret intake manifold pressure for fuel injection and ignition timing control. That signal is critical for drivability, fuel efficiency, and emissions performance on modern gasoline and diesel engine management systems. This sensor is built to OE specifications for electrical output, pressure range, and connector fit, making it a direct replacement choice for Audi vehicles that use this configuration. The Sensor Only product line from Walker is focused on replacement sensors that match the original system interface without changing the vehicle’s existing setup. This part cross-references Standard Ignition AS661 for the same application.

Common Issues This Part Can Address

• Check engine light related to MAP sensor performance
• Rough idle or unstable engine load readings
• Hesitation, poor throttle response, or reduced power
• Incorrect fuel mixture caused by inaccurate manifold pressure data
• Emissions or drivability concerns tied to sensor signal errors

Installation Notes and Tips

Fits 2019-2022 Audi A8 Quattro, Sensor Only; 2018-2022 Audi S4, Sensor Only; 2018-2022 Audi S5, Sensor Only; 2018-2022 Audi S5 Sportback, Sensor Only; 2018-2022 Audi SQ5, Sensor Only; 2021-2022 Audi SQ5 Sportback, Sensor Only; 2020-2021 Audi Q7, Sensor Only; 2019-2021 Audi Q8, Sensor Only; 2020-2021 Audi S6, Sensor Only; 2020-2021 Audi S7 Sportback, Sensor Only; 2020 Audi A6 allroad, Sensor Only; 2019-2020 Audi A6 Quattro, Sensor Only; 2019-2020 Audi A7 Sportback, Sensor Only; 2020 Audi S7, Sensor Only; 2013-2016 Audi Q5, Location-Intake Hose; Sensor Only. Verify the connector style, terminal count, and intake manifold location before installation. Clear any stored diagnostic trouble codes after replacement and confirm the engine data stream reads normally.

Quality Assurance

Walker Products manufactures this MAP sensor as an OE replacement component and tests it for accuracy, responsiveness, and long-term reliability. The design is intended to meet original electrical and fitment requirements for the listed Audi applications, including 225-1351 service use on A8 Quattro and Q5 platforms.