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Air Mass / Flow Sensors for Porsche 944 / 924S › 944606121AX
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88

Reconditioned Air Mass / Flow Sensor.
A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine. The air mass information is necessary for the engine control unit (ECU) to calculate and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature and altitude, and this is an ideal application for a mass sensor
Fits:
Porsche 924S 1986-88 2.5L
Porsche 9442 1985-88 2.5L
Porsche 9442 1988-89 2.7L
(Does not fit 944S/S2 or 944 Turbo)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
944606121AX
The product you are viewing cross references to these numbers
PLEASE NOTE:
- Used parts need to be sent to us within 30 days from the date of the invoice. Returned items outside this window may be sent back to you as we work on strict return windows with our suppliers.
- The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
- Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
- Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
- All surcharges and exchanges are subject to our terms and conditions.
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Fits:
Porsche 997 Turbo MKI
Porsche 997 Turbo MKII
Porsche 997 GT3 MKII
Porsche 957 Cayenne Turbo V8 4.8L MKII
A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine. The air mass information is necessary for the engine control unit (ECU) to calculate and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature and altitude, and this is an ideal application for a mass sensor.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760612501
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Fits:
Porsche 997 Turbo MKI
Porsche 997 Turbo MKII
Porsche 997 GT3 MKII
Porsche 957 Cayenne Turbo V8 4.8L MKII
A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine. The air mass information is necessary for the engine control unit (ECU) to calculate and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature and altitude, and this is an ideal application for a mass sensor.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760612501
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
OE Match air mass / flow sensor for Porsche 997 Turbo, 997 GT3, and 957 Cayenne Turbo MKII models. This replacement sensor fits left or right side applications and helps measure intake air flow for correct engine management and performance.
Sold individually. Quantity required depends on model and intake layout. For vehicles using left and right sensors, 2 may be required per vehicle.
Fits:
Porsche 997 Turbo MKI
Porsche 997 Turbo MKII
Porsche 997 GT3 MKII
Porsche 957 Cayenne Turbo V8 4.8L MKII
The air mass / flow sensor measures the amount of air entering the engine intake system. This information is sent to the engine control unit, allowing it to adjust fuelling, ignition, boost control, and overall engine performance.
Functions
• Replaces the air mass / flow sensor
• Measures incoming intake air flow
• Sends air flow data to the engine control unit
• Helps support correct fuel mixture and engine performance
• Assists with smooth idle, throttle response, and emissions control
• Fits left and right side applications where specified
• OE Match replacement for Porsche intake and engine management repair.
Why Replace This Part?
Air mass / flow sensors can fail due to age, contamination, oil vapour, air filter debris, moisture, electrical faults, or damaged intake components. A faulty sensor may cause poor idle, hesitation, reduced power, increased fuel consumption, engine warning lights, rough running, or incorrect boost and fuelling behaviour. Replacing the sensor helps restore accurate air measurement and reliable engine performance.
When to Replace This Part
• Engine warning light or air flow sensor fault codes are present
• Idle is rough, unstable, or uneven
• Throttle response is poor or delayed
• Engine power is reduced
• Fuel consumption has increased
• Hesitation, flat spots, or poor acceleration are present
• Intake system or engine management faults are being diagnosed.
Where it fits on the car
This sensor fits in the engine intake air system. It can be used on the left or right side where applicable, depending on model and intake layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760612501
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
The Genuine Porsche Air Flow Meter O-Ring, 79 x 6 is an original equipment sealing component designed to provide an airtight seal between the air flow meter and the adjoining intake system components on compatible Porsche models. Manufactured to Porsche's exact specifications for fit, sealing performance and durability, this precision-moulded O-ring prevents unmetered air from entering the intake system, ensuring the engine management system receives accurate airflow readings for optimum performance, fuel efficiency and emissions control.
Sold Each.
Fits:
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
Diagram Ref No 13
Manufactured from high-quality fuel-, oil- and heat-resistant elastomer, the O-ring is engineered to withstand continual exposure to engine heat, intake vacuum, vibration and oil vapours without hardening, flattening or cracking. Precision-moulded to its 79mm x 6mm dimensions, it provides direct replacement fitment, making it ideal during air flow meter replacement, intake servicing or preventative maintenance.
What This Product Does:
- Creates an airtight seal around the air flow meter.
- Prevents unmetered air from entering the intake system.
- Ensures accurate airflow measurement by the engine management system.
- Helps maintain the correct air-to-fuel ratio.
- Supports smooth engine performance and throttle response.
- Contributes to optimum fuel economy and lower emissions.
- Restores factory intake sealing performance.
- Forms an essential part of the engine air intake system.
Symptoms Of Wear Or Failure:
- Rough or unstable idle.
- Vacuum or intake air leaks.
- Illuminated engine management or check engine warning light.
- Lean mixture fault codes.
- Hesitation during acceleration.
- Reduced engine performance.
- Increased fuel consumption.
- Whistling or hissing noises from the intake system.
- Hard, flattened or cracked O-ring during inspection.
- Failed emissions or MOT inspection.
Why Replacement Matters:
- The air flow meter O-ring is continually exposed to engine heat, intake vacuum, oil vapours and repeated thermal cycling. Over time, the sealing material naturally hardens, compresses or deteriorates, reducing its ability to maintain an effective airtight seal.
- A leaking O-ring allows unmetered air to bypass the air flow meter, causing inaccurate airflow readings and upsetting the engine's carefully calibrated air-to-fuel ratio. This can lead to rough running, poor throttle response, increased fuel consumption, emissions faults and engine management warning lights. If left unresolved, prolonged intake leaks may place unnecessary strain on ignition and fuel system components.
- Replacing the original seal with a Genuine Porsche Air Flow Meter O-Ring restores the integrity of the intake system and ensures accurate airflow measurement. Manufactured to Porsche's exact engineering standards using premium-quality sealing materials, it provides factory-correct fitment, exceptional durability and long-lasting sealing performance, helping maintain the efficiency, reliability and performance expected from your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95511064610
The product you are viewing cross references to these numbers
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