Walker 245-1157 Mass Air Flow Sensor

Walker Mass Air Flow Sensor for Mitsubishi

Walker Mass Air Flow Sensor Part Number 245-1157 is a direct-fit engine management sensor for select Mitsubishi applications. It is built to meet or exceed OEM standards and specifications, with support from Walker’s manufacturing, engineering, and technical teams.

Walker Products has supplied fuel system and engine sensor components since 1946. The Walker Mass Air Flow Sensor line focuses on accurate vehicle application coverage and OE-style replacement for Mitsubishi models that rely on precise airflow measurement for proper engine operation.

Key Features

• Mass air flow sensor for emission control and engine management systems
• Part Number: 245-1157
• 4-terminal female connector
• Mounting hardware included
• Housing not included
• Built to meet or exceed OEM standards and specifications
• Cross-references Delphi AF10203 and Standard Ignition MAS0261 for the same application

Detailed Description

This Walker mass air flow sensor measures incoming air so the engine control system can calculate fuel delivery more accurately. For Mitsubishi Eclipse, Outlander, Galant, Lancer, Endeavor, Montero, Montero Sport, and related applications, a properly functioning MAF sensor supports smoother idle, consistent throttle response, and correct air-fuel management. Part number 245-1157 is engineered for direct replacement use in covered vehicles and is backed by Walker’s ISO 9001/IATF16949 quality systems.

Compatible With select Mitsubishi applications including Fits 2004-2012 Mitsubishi Outlander, N/A; Fits 2006-2012 Mitsubishi Eclipse, N/A; Fits 2004-2011 Mitsubishi Galant, N/A; Fits 2004-2008 Mitsubishi Endeavor, N/A; Fits 2004-2006 Mitsubishi Lancer, N/A; Fits 2008-2011 Mitsubishi Lancer, N/A; Fits 2008-2019 Mitsubishi Montero, N/A; Fits 2009-2015 Mitsubishi Montero Sport, N/A; Fits 2011 Mitsubishi Outlander Sport, N/A; Fits 2012-2016 Mitsubishi Lancer, N/A; Fits 2016 Mitsubishi Outlander, N/A.

What It Helps Fix

• Rough idle caused by inaccurate airflow readings
• Hesitation or poor throttle response during acceleration
• Fuel trim issues related to incorrect air measurement
• Check engine light conditions tied to mass air flow sensor faults
• Driveability problems on Mitsubishi Eclipse, Outlander, Galant, and Lancer applications

Installation Notes and Tips

Verify connector style, terminal count, and vehicle application before installation. This sensor uses a female connector and 4 terminals, and it installs without a housing. Confirm the vehicle’s build date where noted in fitment, especially for 2013 Mitsubishi Outlander and 2013 Mitsubishi RVR applications with date-specific coverage. Clear diagnostic trouble codes after installation and inspect the intake tract for leaks or contamination that could affect sensor readings.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM standards and specifications. The company is ISO 9001/IATF16949 certified and supports product accuracy with in-house manufacturing, engineering, application data, and technical support.