Spectra MA366S Mass Air Flow Sensor

Brand Spectra MA366S
Fits Ford and Mercury · 6 vehicles

Programmable ceramic board. Premium silicon coating helps protect against heat swings and road vibration.

Fast signal response. Optimized circuit design improves responsiveness and consistency.

All-platinum sensing. Uses platinum resistance thermometer sensors for accurate airflow measurement.

Cross-references Delphi AF10110, NGK 59021 and Schrader TPMS Solutions 29130 for the same application. See all 17.

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Spectra MA366S Mass Air Flow Sensor

The Spectra MA366S mass air flow sensor is built for precise airflow measurement and stable signal output in the engine management system. It is a direct-fit style replacement for select Ford Escort and Mercury Tracer applications, including 1991-1993 models with multiple mass air flow sensor configurations.

Key Features

  • Programmable ceramic circuit board with premium-grade silicon coating
  • Helps protect the sensor from under-hood heat swings and road vibration
  • Uses platinum resistance thermometer sensor technology for consistent response
  • Supports accurate airflow signal delivery to the engine control system
  • Cross-references Delphi AF10110 and NGK 59021 for the same application

Detailed Description

The Spectra MA366S is engineered for 1991-1993 Ford Escort and 1991-1993 Mercury Tracer vehicles that use a mass air flow sensor in the intake system. Its circuit board design is built to maintain signal consistency under demanding operating conditions, while the platinum resistance thermometer sensors support faster response characteristics. For drivers searching for a 1991-1993 Ford Escort mass air flow sensor or a 1991-1993 Mercury Tracer MAF sensor, MA366S provides a focused replacement option.

This part number, MA366S, is also referenced in aftermarket catalogs under related numbers used for the same application, including Delphi AF10110 and NGK 59021.

What It Helps Address

  • Rough idle caused by inaccurate airflow readings
  • Hesitation during acceleration
  • Hard starting related to incorrect air metering
  • Check engine light concerns tied to airflow sensor performance
  • Fuel trim issues from inconsistent sensor output

Installation Notes and Tips

Verify the original sensor part number and connector style before ordering. Confirm fitment against the vehicle’s existing mass air flow sensor configuration, since these Escort and Tracer applications note compatibility with multiple sensor versions. Inspect the intake tract, air filter housing, and wiring connector for contamination or damage before installation.

Quality Assurance

Spectra designs this sensor with a protected circuit board and platinum-based sensing elements to support stable operation in the engine bay environment. The MA366S is built for the listed Ford Escort and Mercury Tracer applications and is intended as a replacement sensor for those fitments.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
1993FordEscort1.9LL4Compatible with multiple Mass Air Flow Sensors.
1993MercuryTracer1.9LL4Compatible with multiple Mass Air Flow Sensors.
1992FordEscort1.9LL4Compatible with multiple Mass Air Flow Sensors.
1992MercuryTracer1.9LL4Compatible with multiple Mass Air Flow Sensors.
1991FordEscort1.9LL4Compatible with multiple Mass Air Flow Sensors.
1991MercuryTracer1.9LL4Compatible with multiple Mass Air Flow Sensors.
Directly replaces or cross-references 17 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Delphi — AF10110NGK — 59021Schrader TPMS Solutions — 2913029082749503869503245101824520182452030FOCZ12B579AFOCZ12B579AARMMAF0077MAF1166MAF10110MF0869MF0880XTP49503