HomeEmission Control > SensorsWalker 245-2173 Mass Air Flow Sensor
Part #: 245-2173

Walker 245-2173 Mass Air Flow Sensor

Walker Mass Air Flow Sensor
29 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Mass Air Flow Sensor
Fitment: Land Rover and BMW, Range Rover, 540i, X5, Z8, 740i, and 740iL
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Overview of Walker Mass Air Flow Sensor 245-2173

The Walker Mass Air Flow Sensor 245-2173 is designed to provide accurate airflow measurement for optimal engine performance. Compatible with select Audi, BMW, Land Rover, and Mercedes-Benz models, this sensor ensures precise air intake data for efficient fuel management.

  • Part Number: 245-2173
  • Connector Gender: Female
  • Terminal Quantity: 5
  • Mounting Hardware Included
  • Housing Not Included

Walker Mass Air Flow Sensor Product Line Details

The Walker Mass Air Flow Sensor product line focuses on delivering reliable emission control components tailored for various vehicle applications. This line emphasizes sensor accuracy and durability, supporting emission standards compliance and engine efficiency. The 245-2173 sensor is part of this line, engineered to meet the specific requirements of premium vehicle makes and models.

Technical Description and Compatibility

This mass air flow sensor features a female connector with five terminals, facilitating secure and precise electrical connections. While the housing is not included, the sensor comes with mounting hardware to simplify installation. It is compatible with multiple vehicle models, including Audi A3, BMW 540i, 740i, 740iL, Land Rover Range Rover, and Mercedes-Benz G55 AMG, S55 AMG, SL55 AMG, X5, and Z8. The sensor plays a critical role in measuring the volume and density of air entering the engine, which is essential for accurate fuel injection and emission control.

Common Applications and Issues Addressed

  • Helps resolve engine performance issues related to inaccurate air flow readings
  • Addresses rough idling and stalling caused by faulty sensors
  • Improves fuel efficiency by providing precise air intake data
  • Supports emission control compliance by ensuring accurate sensor feedback
  • Reduces check engine light triggers related to mass air flow sensor faults

Installation Notes and Tips

Installation of the Walker Mass Air Flow Sensor 245-2173 requires careful handling of the sensor terminals and connector. Since the housing is not included, ensure the existing housing is in good condition before installation. The included mounting hardware facilitates secure attachment. It is recommended to disconnect the battery before installation and verify connector compatibility with the vehicle’s wiring harness. Proper installation helps maintain sensor accuracy and vehicle performance.

Quality Assurance and Warranty

Walker products are manufactured to meet industry standards for emission control sensors. The 245-2173 sensor undergoes quality checks to ensure reliable operation. While specific warranty details are not provided here, Walker typically offers coverage against manufacturing defects. For warranty information, refer to the product documentation or contact the manufacturer directly.

BrandWalker
Part Number245-2173
PositionWalker Mass Air Flow Sensor
Connector GenderFemale
Housing IncludedNo
Mounting Hardware IncludedYes
Terminal Quantity5

This part fits 29 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010Mercedes-BenzG55 AMG5.4LV8N/ASensor Only
2006Mercedes-BenzSL55 AMG5.5LV8N/ASensor Only
2005Mercedes-BenzSL55 AMG5.5LV8N/ASensor Only
2004Land RoverRange Rover4.4LV8N/AWalker Mass Air Flow Sensor
2004Mercedes-BenzS55 AMG5.5LV8N/ASensor Only
2004Mercedes-BenzSL55 AMG5.5LV8N/ASensor Only
2003BMW540i4.4LV8N/AWalker Mass Air Flow Sensor
2003BMWX54.6LV8N/AWalker Mass Air Flow Sensor
2003BMWX54.4LV8N/AWalker Mass Air Flow Sensor
2003BMWZ84.8LV8N/AWalker Mass Air Flow Sensor
2003Land RoverRange Rover4.4LV8N/AWalker Mass Air Flow Sensor
2003Mercedes-BenzSL55 AMG5.4LV8N/ASensor Only
2002BMW540i4.4LV8N/AWalker Mass Air Flow Sensor
2002BMWX54.6LV8N/AWalker Mass Air Flow Sensor
2002BMWX54.4LV8N/AWalker Mass Air Flow Sensor
2001AudiA31.8LL4N/ASensor Only
2001BMW540i4.4LV8N/AWalker Mass Air Flow Sensor
2001BMW740i4.4LV8N/AWalker Mass Air Flow Sensor
2001BMW740iL4.4LV8N/AWalker Mass Air Flow Sensor
2001BMWX54.4LV8N/AWalker Mass Air Flow Sensor
2000AudiA31.8LL4N/ASensor Only
2000BMW540i4.4LV8N/AWalker Mass Air Flow Sensor
2000BMW740i4.4LV8N/AWalker Mass Air Flow Sensor
2000BMW740iL4.4LV8N/AWalker Mass Air Flow Sensor
2000BMWX54.4LV8N/AWalker Mass Air Flow Sensor
1999AudiA31.8LL4N/ASensor Only
1999BMW540i4.4LV8N/AWalker Mass Air Flow Sensor
1999BMW740i4.4LV8N/AWalker Mass Air Flow Sensor
1999BMW740iL4.4LV8N/AWalker Mass Air Flow Sensor

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

MF21157N

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.