Walker 225-1331 Manifold Absolute Pressure Sensor

Walker 225-1331 Manifold Absolute Pressure Sensor

Walker Products 225-1331 is a manifold absolute pressure sensor for select Ford, Lincoln, and Transit applications. It is built to meet or exceed OEM standards and specifications, with engineering and technical support behind the part for accurate vehicle application coverage.

Key Features

• Manifold Absolute Pressure Sensor for engine management and load sensing
• Walker Products line backed by ISO 9001/IATF16949 certified manufacturing
• Application coverage for Ford F-150, Explorer, Edge, Mustang, Taurus, Flex, Transit, and Lincoln MKX
• Includes seal on select applications per fitment notes
• Part number 225-1331 for easy catalog matching

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, supporting the automotive aftermarket with OE-focused manufacturing and product engineering. The Walker Products line includes engine management components such as sensors, injectors, and ignition-related parts, with emphasis on accurate fitment data and technical support. This MAP sensor is intended for vehicles that require precise manifold pressure input for engine control strategy, including 2015-2020 Ford F-150, 2016-2019 Ford Flex, 2015-2018 Ford Edge, 2015-2017 Ford Mustang, 2016-2019 Ford Explorer, 2016-2018 Lincoln MKX, and 2016-2019 Ford Transit models. This part cross-references Standard Ignition AS638 for the same application.

What It Helps Address

• Erratic idle or unstable engine speed
• Reduced throttle response
• Check engine light related to manifold pressure signal faults
• Incorrect fuel delivery calculations from a faulty pressure reading
• Driveability issues caused by inaccurate engine load data

Installation Notes and Tips

Verify the connector style, mounting location, and application notes before installation. For listed Ford F-150, Explorer, Taurus, Transit, Edge, Mustang, Flex, and Lincoln MKX applications, confirm the exact model year and note whether the fitment listing specifies an included seal. Clear diagnostic trouble codes after installation and inspect the intake system for vacuum leaks or damaged wiring that could affect sensor readings.

Quality Assurance

Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company’s ISO 9001/IATF16949 certified operations and in-house engineering support help maintain application accuracy and product consistency for the 225-1331 MAP sensor.