Walker 225-1281 Manifold Absolute Pressure Sensor

Walker Products MAP Sensor for Nissan and INFINITI

Walker Products 225-1281 is a manifold absolute pressure sensor built for direct-fit engine management service on select Nissan and INFINITI applications. It supports accurate intake manifold pressure input for proper fuel and ignition control, making it a practical replacement when drivability or sensor signal issues appear.

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering processes focused on meeting or exceeding OEM standards. The Walker Products line includes engine management parts such as throttle position sensors, cam and crankshaft sensors, oxygen sensors, fuel injectors, and related repair components.

Key Features

• Manifold absolute pressure sensor for engine load signal monitoring
• Direct-fit replacement for select INFINITI Q50, INFINITI Q60, INFINITI QX60, and Nissan Murano applications
• Walker Products 225-1281 for OE-style service and repair
• Built by an ISO 9001/IATF16949 certified manufacturer
• Cross-references Hitachi Automotive PRS0005 and Standard Ignition AS459 for the same application

Vehicle Fitment

• Fits 2020-2024 INFINITI Q50, Sensor Only
• Fits 2020-2022 INFINITI Q60, Sensor Only
• Fits 2016-2019 INFINITI Q50, Walker Products
• Fits 2017-2019 INFINITI Q60, Walker Products
• Fits 2014-2017 INFINITI QX60, Walker Products
• Fits 2016 Nissan Murano, Walker Products

What It Helps Address

• Incorrect manifold pressure signal to the engine control module
• Rough idle or unstable engine operation related to MAP sensor output
• Reduced throttle response caused by inaccurate load data
• Fuel trim concerns tied to faulty manifold pressure readings
• Check engine light conditions associated with MAP sensor faults

Installation Notes

Verify the connector style, mounting location, and calibration requirements against the original sensor before installation. For best results, inspect the intake tract, vacuum passages, and electrical connector for damage or contamination before replacing the sensor. Confirm application by year, make, and model, including the listed Sensor Only notes for applicable INFINITI Q50 and Q60 vehicles.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM standards and specifications. The company backs production with in-house manufacturing, product management, engineering, and technical support resources, and operates under ISO 9001/IATF16949 certification. Walker Products 225-1281 is built for dependable OE-style service on select Nissan and INFINITI vehicles.