HomeEmission Control > SensorsWalker 245-1012 Mass Air Flow Sensor
Part #: 245-1012

Walker 245-1012 Mass Air Flow Sensor

Walker Mass Air Flow Assembly
12 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Mass Air Flow Assembly
Fitment: Ford and Mercury, Aerostar, Tempo, Topaz, and Ranger
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Mass Air Flow Assembly 245-1012

The Walker Mass Air Flow Assembly 245-1012 is designed for precise air measurement in Ford and Mercury vehicles. This mass air flow sensor is compatible with models such as the Ford Aerostar, Ranger, Tempo, and Mercury Topaz, ensuring accurate engine performance and emission control.

  • Includes housing for secure installation
  • Features 4 terminals for reliable electrical connection
  • Female connector gender for proper fitment
  • Mounting hardware not included
  • Compatible with Ford Aerostar, Ranger, Tempo and Mercury Topaz

Detailed Product Description

This Walker Mass Air Flow Assembly 245-1012 sensor measures the volume and density of air entering the engine, providing critical data to the engine control unit (ECU). The included housing protects the sensor element, ensuring durability and consistent performance. With a 4-terminal configuration and a female connector, this sensor integrates seamlessly with the vehicle’s wiring harness. Although mounting hardware is not included, the sensor is designed to fit securely within the existing air intake system of the specified Ford and Mercury models.

Walker Mass Air Flow Assembly Product Line

The Walker Mass Air Flow Assembly product line focuses on delivering reliable emission control sensors that meet OEM specifications. This line emphasizes durability and accurate airflow measurement, which are essential for maintaining engine efficiency and reducing emissions. The 245-1012 part is a representative component within this line, tailored for select Ford and Mercury vehicles requiring precise air flow data.

Common Applications and Issues Addressed

  • Restores accurate air flow measurement for proper fuel mixture
  • Helps resolve engine hesitation or stalling related to faulty sensors
  • Improves emission control system performance
  • Addresses check engine light triggers related to mass air flow sensor faults
  • Supports smooth engine idling and acceleration

Installation Notes and Tips

When installing the Walker Mass Air Flow Assembly 245-1012, ensure the sensor housing is properly seated to avoid air leaks. Verify the female connector aligns correctly with the vehicle’s wiring harness terminals. Since mounting hardware is not included, reuse the original fasteners or acquire compatible hardware to secure the sensor. It is recommended to disconnect the battery before installation to prevent electrical issues.

Quality Assurance and Warranty

Walker mass air flow sensors are manufactured to meet strict quality standards for emission control components. The 245-1012 part undergoes rigorous testing to ensure accurate airflow readings and durability under normal operating conditions. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary.

BrandWalker
Part Number245-1012
PositionWalker Mass Air Flow Assembly
Connector GenderFemale
Housing IncludedYes
Mounting Hardware IncludedNo
Terminal Quantity4

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1995FordAerostar3.0LV6N/AMass Air Flow Sensor Part Number W ID# F27Z 12B579-AA; Walker Mass Air Flow Assembly
1994FordAerostar3.0LV6N/AFitment: Stamped # F2TZ12B579B - Mass Air Flow Sensor; Walker Mass Air Flow Assembly
1994FordTempo2.3LL4N/AWalker Mass Air Flow Assembly
1994MercuryTopaz2.3LL4N/AWalker Mass Air Flow Assembly
1993FordAerostar3.0LV6N/AFitment: Stamped # F2TZ12B579B - Mass Air Flow Sensor; Walker Mass Air Flow Assembly
1993FordTempo2.3LL4N/AWalker Mass Air Flow Assembly
1993MercuryTopaz2.3LL4N/AWalker Mass Air Flow Assembly
1992FordAerostar3.0LV6N/AWalker Mass Air Flow Assembly
1992FordRanger3.0LV6N/AWalker Mass Air Flow Assembly
1992FordRanger2.3LL4N/AWalker Mass Air Flow Assembly
1992FordTempo2.3LL4N/AWalker Mass Air Flow Assembly
1992MercuryTopaz2.3LL4N/AWalker Mass Air Flow Assembly

* 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:

105001L7105004L71619506161951320995213103121334762139942907929138501015S2661641527749506751600284971486002869506917831AF10112F23Z12B579AARMF27Z12B579AARMF2TZ12B579AF2TZ12B579BMA133MAF0062MAS0405MF0871MF0888SU2040

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