Walker 225-1166 Manifold Absolute Pressure Sensor

Walker 225-1166 Manifold Absolute Pressure Sensor

Walker Products 225-1166 is a manifold absolute pressure sensor for select Nissan and INFINITI applications. It provides the engine management signal used to monitor intake manifold pressure, supporting accurate fuel and ignition control.

Key Features

• Manifold Absolute Pressure Sensor for engine management systems
• OE-focused replacement from Walker Products
• Built for select Nissan Altima, INFINITI QX50, and INFINITI QX55 applications
• Interchange reference: 22365-5NA0A
• Walker Products 225-1166 for direct-fit service on listed vehicles

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support centered on meeting or exceeding OEM standards and specifications. The Walker Products line includes engine management parts such as sensors, injectors, ignition components, and fuel system repair products. For buyers searching for a Walker 225-1166 MAP sensor, this part is listed for 2019 Nissan Altima, 2020-2024 Nissan Altima, 2019 INFINITI QX50, 2020 INFINITI QX50 to 05/2020, 2023-2024 INFINITI QX50, and 2022-2023 INFINITI QX55. This part cross-references 22365-5NA0A for the same application.

What It Helps Address

• Incorrect manifold pressure signal to the engine control module
• Rough idle caused by inaccurate load sensing
• Driveability concerns tied to fuel and timing calculations
• Check engine light conditions related to MAP sensor performance
• Hard starting or hesitation linked to faulty pressure input

Installation Notes

Verify the part number and vehicle application before installation. Confirm the correct model year and note the 2020 INFINITI QX50 application limit of to 05/2020. Inspect the connector, vacuum passage, and surrounding intake components for damage or contamination before replacing the sensor.

Quality Assurance

Walker Products is an ISO 9001/IATF 16949 certified manufacturer with in-house manufacturing, product management, and engineering support to help maintain accurate part production and application data.