Walker 245-1179 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for Discovery

The Walker Mass Air Flow Assembly helps restore accurate airflow measurement for the engine management system. This Walker mass air flow sensor assembly is built for direct replacement use on select Land Rover Discovery applications, including models with OE number ERR7171.

Key Features

• Walker Mass Air Flow Assembly, part number 245-1179
• Housing included for a complete sensor assembly replacement
• 5-terminal female connector
• Direct-fit replacement for select Land Rover Discovery models
• Engineered to meet or exceed OEM standards and specifications
• Backed by Walker Products’ in-house manufacturing, engineering, and technical support

Product Details

Walker Products has supplied fuel system and engine management components since 1946, with a focus on accurate production, application coverage, and technical support. The Walker Mass Air Flow Assembly line is designed for dependable airflow signal delivery, which is critical for proper fuel metering and drivability. Part number 245-1179 is a fitment-based replacement for 1999 Land Rover Discovery models with OE number ERR7171 and 2000-2004 Land Rover Discovery models.

This part cross-references Standard Ignition MAS0414 for the same application.

What It Helps Address

• Rough idle caused by incorrect airflow readings
• Hesitation or stumble during acceleration
• Reduced fuel economy from inaccurate air/fuel calculation
• Check engine light related to mass air flow sensor performance
• Poor throttle response on Land Rover Discovery engine management systems

Installation Notes

Verify connector style, terminal count, and OE reference before installation. This assembly uses a female connector and 5 terminals, and mounting hardware is not included. Confirm the vehicle application against the OE number ERR7171 when servicing a 1999 Land Rover Discovery, and match the part number 245-1179 to the correct Discovery fitment before replacement.

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 through its own manufacturing, product management, and engineering teams.