HomeEmission Control > SensorsWalker 245-1021 Mass Air Flow Sensor
Part #: 245-1021

Walker 245-1021 Mass Air Flow Sensor

Walker Mass Air Flow Assembly
6 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: Mercury and Nissan, Villager and Quest
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 Sensor 245-1021

The Walker Mass Air Flow Assembly 245-1021 is designed for precise air measurement in select Mercury and Nissan vehicles. This sensor ensures accurate airflow data for optimal engine performance in models like the Mercury Villager and Nissan Quest.

  • Includes housing for secure installation
  • Three-terminal design for reliable signal transmission
  • Female connector for direct compatibility
  • Compatible with Mercury Villager and Nissan Quest
  • Mounting hardware not included

About the Walker Mass Air Flow Assembly Product Line

The Walker Mass Air Flow Assembly line focuses on delivering emission control sensors that meet OEM specifications. This product line emphasizes durability and precise airflow measurement, which is critical for maintaining engine efficiency and emission standards. The 245-1021 sensor is part of this line, providing a direct fit and reliable performance for specific vehicle applications.

Detailed Product Description

The Walker 245-1021 mass air flow sensor comes with an integrated housing, simplifying installation and protecting the sensor element. Featuring a three-terminal configuration and a female connector, it ensures proper electrical connection and signal accuracy. This sensor is engineered to work specifically with Mercury Villager and Nissan Quest models, providing accurate airflow data to the engine control unit for optimal fuel management and emission control.

Common Applications and Issues Addressed

  • Restores accurate air intake measurement for improved engine performance
  • Helps resolve rough idling and engine hesitation
  • Reduces potential emission control system faults
  • Addresses check engine light triggers related to airflow sensor failure
  • Improves fuel efficiency by ensuring correct air-fuel mixture

Installation Notes and Tips

Installation requires removal of the old sensor and replacement with the Walker 245-1021 assembly. The included housing facilitates proper alignment, but note that mounting hardware is not included and may need to be reused or sourced separately. Ensure the female connector matches the vehicle’s wiring harness for a secure connection. Handle the sensor carefully to avoid damage to the sensing element.

Quality Assurance and Warranty

Walker products are manufactured to meet industry standards for emission control sensors. The 245-1021 mass air flow sensor undergoes quality checks to ensure durability and performance. Warranty details should be confirmed with the product documentation or supplier, as coverage may vary.

BrandWalker
Part Number245-1021
PositionWalker Mass Air Flow Assembly
Connector GenderFemale
Housing IncludedYes
Mounting Hardware IncludedNo
Terminal Quantity3

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1995MercuryVillager3.0LV6N/AWalker Mass Air Flow Assembly
1995NissanQuest3.0LV6N/AWalker Mass Air Flow Assembly
1994MercuryVillager3.0LV6N/AWalker Mass Air Flow Assembly
1994NissanQuest3.0LV6N/AWalker Mass Air Flow Assembly
1993MercuryVillager3.0LV6N/AWalker Mass Air Flow Assembly
1993NissanQuest3.0LV6N/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:

157024316195162133484213976226800B000290185S26885S2818641539641622749516869516917922AFLS146F3XY12B579AMAF0003MF0895MF0895NSU2228SU5062

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