Air mass / flow sensor. Porsche 993 Turbo / 993 Turbo S  ›  99360612401

OE Match air mass / flow sensor for Porsche 993 Turbo and Turbo S applications. It measures incoming air mass and provides a signal used by the engine management system to calculate fuel delivery.

Fits

• Porsche 993 Turbo 1994–96
• Porsche 993 Turbo S 1994–97
  
  

Check fitment for your specific vehicle (model, year, engine) before ordering.

Diagram ref no: 6

What This Product Does

The mass airflow sensor supplies intake-air information to the engine control unit. This information helps the system determine how much fuel to inject as engine demand and air conditions change. Air density varies with temperature, atmospheric pressure and altitude, making air mass measurement relevant to fuelling calculations.

Functions

• Measures air mass passing through the intake.
• Provides airflow information for engine-management calculations.
• Supports adjustment of fuel delivery as operating conditions change.
  
  

Technical Details

• Brand: OE Match.
• Component identification: mass air flow meter, also called a MAF sensor.
• Internal diagram part reference: 993606124AX.
• Supplied Porsche references: 99360612401 and 99360612400.
• Assembly context: turbocharging 993 TURBO 1994-98. The specific applications above remain the fitment guide.
  
  

Symptoms of Fault

• Hesitation or uneven response to throttle input.
• Unsteady idle or engine stalling.
• Reduced engine output.
• Increased fuel consumption.
• Airflow-signal plausibility faults.
• Unexpected or inconsistent airflow values during live-data checks.
  
  

These symptoms are not unique to the sensor. Intake leaks, damaged wiring and poor connector contact can produce similar running problems, so diagnosis should establish the cause before replacement.

Why Replacement Matters

An inaccurate airflow signal can cause the engine control unit to calculate unsuitable fuel quantities. Replacing a confirmed faulty sensor addresses the measurement fault rather than unrelated ignition or intake problems. OE Match focuses on Porsche replacement applications, with reference matching and specification checks forming part of its component-selection process.

FAQs

Does an airflow fault code prove the sensor has failed?
No. Check the electrical connections, wiring and intake system, then assess the signal before condemning the sensor.

Could an intake leak cause similar symptoms?
Yes. Air entering without being measured can affect fuelling and resemble a sensor fault.

Will cleaning resolve the problem?
Light contamination may be relevant, but cleaning cannot correct every electronic or calibration fault.

What should be checked before choosing a replacement?
Compare the original references, connector and vehicle application. Similar appearance alone does not establish compatibility.