do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Switches / Regulators / Sensors
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche Carrera GT
Fits:
Porsche 996 GT3 3.6L 1999-05
Porsche 997 GT3 3.8L 2007-11 (not RS version)
Porsche 991 GT3 3.8L / 4.0L 2013-17
Porsche Carrera GT 2004-06
Click 'Zoom in' for large parts diagram.
Diagram ref no 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611053090
The product you are viewing cross references to these numbers
Air Intake Switches, Regulators & Sensors – Precision Control for Porsche Engine Efficiency
Air intake switches, regulators, and sensors are critical components in your Porsche’s engine management system, designed to monitor, control, and optimise the airflow entering the engine. These parts ensure precise fuel-air mixture regulation, allowing for efficient combustion, smooth performance, and compliance with modern emissions standards.
At Design911, we offer a complete range of genuine and high-quality air intake sensors, pressure regulators, and switches for numerous Porsche models, including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each component is engineered to deliver accuracy, reliability, and seamless integration with your vehicle’s electronic control systems.
What Do Air Intake Switches, Regulators & Sensors Do?
These components are essential for maintaining the correct
balance between air and fuel delivery. They perform several vital functions,
including:
- Monitoring
airflow and pressure to regulate combustion efficiency.
- Sending
data to the ECU (engine control unit) for precise timing and fueling
adjustments.
- Ensuring
smooth throttle response and stable idling.
- Maintaining emission control by optimising air-fuel ratios under all conditions.
Together, they help your Porsche achieve maximum performance, fuel economy, and emissions compliance — whether under everyday driving or high-performance conditions.
Why Do Air Intake Switches, Regulators & Sensors Fail?
Over time, these components can degrade due to heat,
vibration, or contamination. Common causes of failure include:
- Carbon
or oil buildup on sensor tips affecting readings.
- Electrical
failures from wiring corrosion or connector damage.
- Mechanical
wear in regulators or valves.
- Vacuum
leaks causing inaccurate air pressure readings.
- Exposure to moisture leading to corrosion or short circuits.
Symptoms of failure include erratic idling, reduced power, poor fuel economy, engine misfires, or a check engine light triggered by faulty airflow data.
Why Replace Faulty Air Intake Components?
A malfunctioning air intake sensor or regulator can lead to incorrect air-fuel mixtures, reduced performance, and increased emissions. Replacing these components ensures your Porsche runs smoothly, efficiently, and safely.
Benefits of replacement include:
- Restored power and throttle responsiveness.
- Improved combustion efficiency and reduced emissions.
- Reliable ECU communication and consistent performance.
- Long-term durability with manufacturer-quality precision.
Our selection of intake regulators, pressure sensors, and switches are built with advanced electronics, corrosion-resistant materials, and precision calibration, ensuring reliable performance in all Porsche models.
