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Breather line Genuine Porsche part 99611012731
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.

Fits:
Porsche 996 C2/C4/C4S
Porsche 997 C2/2S
Porsche 997 C4/4S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611013152
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Genuine Porsche engine air filter, manufactured to Porsche’s exact factory specifications. This filter is the correct OEM replacement for selected Porsche 911 (996 and 997) performance models, ensuring precise fitment, correct airflow characteristics, and the level of filtration required for high-performance flat-six engines.
Fits:
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT2 2000 - 2005
Porsche 997.1 GT3 2007 - 2009
Porsche 997.2 GT3 2010 - 2011 (Not for RS)
Diagram ref no 2
The filter is designed to fit perfectly within the factory airbox, sealing correctly against the housing to prevent unfiltered air from entering the intake system. Using a Genuine Porsche air filter ensures the engine continues to operate exactly as Porsche intended, particularly important for high-output and motorsport-derived engines.
The engine air filter plays a critical role in protecting the engine while supporting optimal combustion. As air is drawn into the intake system, it carries dust, dirt, and microscopic debris that can cause internal engine wear if not filtered properly.
The air filter:
• Removes harmful airborne contaminants before they reach the engine
• Maintains correct airflow for efficient combustion
• Supports stable power delivery and throttle response
• Helps preserve long-term engine reliability and performance
By ensuring only clean, properly metered air reaches the combustion chambers, this filter protects vital engine components such as pistons, valves, cylinder walls, and sensors.
High-performance Porsche engines rely on precise airflow management. A clogged, incorrect, or poorly manufactured air filter can lead to restricted airflow, reduced efficiency, and increased internal wear. Using a Genuine Porsche air filter ensures:
• Factory-correct airflow and filtration balance
• Protection of sensitive internal engine components
• Maintained performance and throttle response
• Compliance with Porsche service and maintenance standards
Replace the air filter if:
• The filter element shows visible dirt or heavy discoloration
• Engine response feels reduced or inconsistent
• Fuel consumption has increased
• The vehicle has reached a scheduled service interval
• The car is driven frequently in dusty or high-pollution environments
Regular inspection and replacement help protect engine health and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611013171
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- 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

This Product Fits:
Porsche 911 (996) 3.6L GT2 2001-05
Porsche 911 (996) 3.6L GT3 1999-05
Porsche 911 (996) 3.6L Turbo 2000-05
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box.
Works with Original Equipment Manufacturer Vehicle Electronics.
Environmentally Friendly, K&N Reusable Air Filters
Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
33-2189
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11

This Product Fits:
Porsche 986 Boxster 2.5L 1996-99
Porsche 986 Boxster 2.7L 1999-05 (220 & 228PS)
Porsche 986 Boxster S 3.2L 1999-05 (Excl. 280PS)
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box.
Works with Original Equipment Manufacturer Vehicle Electronics.
Environmentally Friendly, K&N Reusable Air Filters
Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
33-2773
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04

This Product Fits:
Porsche 911 (996) 3.4L Carrera (301bhp) 06/1997-10/2001
Porsche 911 (996) 3.4L Carrera 2/4 (320bhp) 06/1999>>
Porsche 911 (996) 3.6L Carrera 2/4/4S (320bhp) 09/2001>>
Porsche 911 (996) 3.6L Carrera 2/4 (345bhp) 05/2002>>
Porsche 911 (997) 3.6L Carrera 07/2004>>
Porsche 911 (997) 3.8L Carrera S 07/2004>>
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box.
Works with Original Equipment Manufacturer Vehicle Electronics.
Environmentally Friendly, K&N Reusable Air Filters
Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
33-2786
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

At the heart of the unique DesignTek air filter is a specially developed polyurethane foam which acts as a filtration medium, higher both higher performance and life expectancy then paper air filters. The PYRAMID VORTEX design outer surface area will absorb larger amounts of airborne dirt particles, while still allowing air to flow freely.
High flow with excellent filteration.
This Product Fits:
Porsche Boxster (986) 2.5 09/96 - 09/99
Porsche Boxster (986) 2.7 08/99 - 01/05
Porsche Boxster (986) 3.2 S 08/99 - 01/05
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3603001594
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
Upgrade your intake system with a DesignTek Performance Air Filter, engineered to deliver increased airflow, improved throttle response, and long-lasting filtration. Designed as a direct replacement for your factory filter, DesignTek performance filters combine high-flow cotton gauze media with a durable, reusable construction - making them the ideal solution for drivers who want both performance and protection.
Fits:
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT2 2000 - 2005
Porsche 997.1 GT3 2007 - 2009
Porsche 997.2 GT3 2010 - 2011 (Not for RS)
Diagram ref no 2
DesignTek filters are washable and reusable, reducing the need for frequent replacements while maintaining excellent filtration efficiency. The pleated multi-layer filter media is built to capture harmful particles while allowing a greater volume of air to reach the engine - helping support more consistent power delivery and sharper acceleration.
Whether you’re driving daily, touring, or enjoying spirited performance runs, a DesignTek Performance Air Filter is a smart upgrade that provides high filtration, high flow, and long service life with minimal maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611013171
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- 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

This Product Fits:
Porsche Boxster 986 / 986 S
Panel Filter Size:
- width - 178mm
- height - 244mm
BMC air filters are designed and produced to ensure a higher air flow than original paper filters. In F1, for example, BMC cotton filters minimize the loss of air flow pressure passing through the air filter; this way ensures the best conditions for full exploitation of maximum power. Therefore the benefits of replacing the original paper filter with BMC cotton air filter, produced using the same technology and materials as the F1 air filters, are evident.
DESIGN AND MATERIALS
Qualified engineers using advanced software and expert technicians using the latest technologies produce BMC air filters. An F1 filter must be very light, must be made of the best raw materials and must improve performance. For this reason we use only alloy mesh with epoxy coating to ensure protection from petrol fumes and from oxidization due to the humidity of the air. The filtering material is composed of a special cotton gauze soaked with low-viscosity oil to give you the best air permeability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FB140
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04

This Product Fits:
Porsche 911 (996) 3.4 Carrera 2/4
Porsche 911 (996) 3.6 Carrera 2/4
Porsche 911 (997) 3.6 Carrera 2/4
Porsche 911 (997) 3.8 Carrera 2S /4S
Panel Filter Size:
- width - 171/128mm
- height - 3528mm
BMC air filters are designed and produced to ensure a higher air flow than original paper filters. In F1, for example, BMC cotton filters minimize the loss of air flow pressure passing through the air filter; this way ensures the best conditions for full exploitation of maximum power. Therefore the benefits of replacing the original paper filter with BMC cotton air filter, produced using the same technology and materials as the F1 air filters, are evident.
DESIGN AND MATERIALS
Qualified engineers using advanced software and expert technicians using the latest technologies produce BMC air filters. An F1 filter must be very light, must be made of the best raw materials and must improve performance. For this reason we use only alloy mesh with epoxy coating to ensure protection from petrol fumes and from oxidization due to the humidity of the air. The filtering material is composed of a special cotton gauze soaked with low-viscosity oil to give you the best air permeability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FB156
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
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