Air Filters
Air Filter Vortex. Porsche 911 2.7L/3.0L/SC - DesignTek
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
High flow with excellent filtration.

Fits:
Porsche 911 (63-83) 2.7L 09/73 - 06/77
Porsche 911 (63-83) 2.7 S Carrera 08/73 - 01/76
Porsche 911 (63-83) 3.0 SC 08/82 -07/83
Porsche 911 (63-83) 3.0 SC Carrera 03/74 - 10/83
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3603001209
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Air filter. Porsche 911 1972-83
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC

Fits:
Porsche 911 2.4L
Porsche 911 2.7L
Porsche 911 3.0L
Porsche 911 SC 1974-83
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91111018502
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Air filter. Porsche 911 1972-83
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC

Fits:
Porsche 911 T-K 2.4L 1972-73 Cars with mixture controller
Porsche 911 2.7L 1974-77
Porsche 911 3.0L SC 1978-83
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91111018502
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Airbox housing lower part. Porsche 911 1976-83
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC

Fits:
Porsche 911 1976-77 930/02/12
Porsche 911 SC 1978-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
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BMC Air Filter Cleaning Kit - Detergent + Oil
Includes special BMC detergent and an oil applicator - in either spray bottle or liquid form.

HOW IS A BMC FILTER REGENERATED?
We recommend using original BMC kits only, as other products may not be effective or may damage the filter permanently, thus invalidating the warranty.
We recommend regenerating the filter (washing + oil application) every 20.000 – 25.000 km to ensure best performance and long service life.
This value is a rough estimate and can vary based on the climatic conditions and the ground on which the vehicle is used (sand, dirt roads, etc.).
The various steps to be carried out in order to regenerate the filtering element are indicated in the instructions contained in the regeneration kit.
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WA2
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BMC Air Filter. Porsche 911 (K-JETRONIC) (Part No. FB812-01)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC

This Product Fits:
Porsche 911 Carrera 2.7L / 3.0L 1973-83 (K-JETRONIC)
Panel Filter Size:
- width - 178 mm
- height - 401 mm
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.
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BMC Air Filter. Porsche 911 / 914 1966-76 (Part No. FB232/07)
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera

This Product Fits:
Porsche 911 1966-76
Porsche 914 1970-76
Cylindrical Filter Size:
- width - 140mm
- height - 220mm
- diameter - 90mm
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.
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BMC Air Filter. Porsche 911 2.7 / 3.0 / SC 74-83 (Part No. FB298/01)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC

This Product Fits:
Porsche 911 2.7L / 3.0L / SC 1974-83
Panel Filter Size:
- width - 180mm
- height - 396mm
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.
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FB298
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K&N Air Filters for Single or Two Barrel Carburetors for Porsche 911
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50

Fits:
Porsche 911 1965-89
Product Specifications:
Part Number: E-3671
Product Style: Oval Air Filter
Air Filter Shape: Oval
Height: 3.25 in (83 mm)
Inner Wire: No
Inside Length: 10.75 in (273 mm)
Inside Width: 4 in (102 mm)
Outside Length: 12 in (305 mm)
Outside Width: 5.25 in (133 mm)
Top Style: Open
Top Material/Finish: None
Filter Material: Cotton Gauze
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!
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E-3671
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K&N Air Filter for Porsche 911 2.7 / 3.0 / SC 74-83 K-JET
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC

This Product Fits:
Porsche 911 2.7L 1972-79 (Panel Filter)
Porsche 911 3.0L / SC 1974-83
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!
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33-2004
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K&N Custom Air Filters for Triple Barrel Carburettors for Porsche 911
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50

This Product Fits:
Porsche 911 with carbs
K&N brand air filter, part number 56-1240 which is now 56-1770-1 this is for Weber 40/46 IDA (Triple carb) as fitted to Porsche 911.
K&N Custom Air Filter kits are designed to allow the maximum performance from your carburettors, yet keep the dirt on the outside where it belongs. These assemblies come with top and base plates and the famous K&N High-Flow Washable Air Filter.
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56-1770-2
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K&N Filter care service kit aerosol - international

K&N Recharger Kit 99-5000EU is designed for cleaning your K&N oiled cotton air filter when it is time to be serviced.
Part 99-5000EU is labeled in English, Spanish, Swedish, Polish and Czech for use in Europe.
The kit comes with K&N Power Kleen air filter cleaner and air filter oil.
99-5000EU will restore air flow efficiency and will bring your K&N oiled cotton air filter to like new condition. K&N Power Kleen works to dissolve the dirt build up and old filter oil, and can be washed away with water. After the air filter fully dries re-oil your air filter then reinstall it.
This Recharger Kit comes with a 204 milliliter aerosol spray can of oil and a 355 milliliter K&N pump bottle of Power Kleen air filter cleaner.
NOTE: This product has got shipping restrictions for export
Please note this item can not be sent out by plane. Deliveries only to European countries by road service
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Pop off air valve. Porsche 911 1973-89
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

Fits:
Porsche 911 1973-89
Prevents costly airbox explosions, installed with the engine and air box in place. 911 engines since 1973 have had the bad habit of backfiring and blowing a hole an the air box. 911 POP VALVE is installed inside the air box and when a backfire occurs the valve will instantly open and release the backfire pressure. The POP VALVE then automatically closes and the angine continues to run. The POP VALVE has no effect on the performance or fuel mileage.
CIS Pop Off Valve Installation Click Here
For Fitting Instructions CLICK HERE
Please note the glue is not included with the air valve.
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Porsche Air Filters | Design911 Performance & Replacement Filters for Clean Engine Breathing
Air filters are essential for your Porsche’s performance, efficiency, and longevity. Designed to remove dust, pollen, and debris from incoming air, they ensure clean airflow to the engine for optimal combustion. A high-quality air filter not only improves power delivery and throttle response but also helps protect internal engine components from premature wear and damage.
At Design911, we supply a full range of air filters for both classic and modern models — including high-performance cotton gauze, pleated paper, and foam filters. Each filter is designed for precision fitment and maximum filtration efficiency. Whether you’re maintaining your daily driver or upgrading your Porsche for motorsport use, our filters deliver clean airflow, long service life, and reliable performance.
What Do Air Filters Do?
Air filters are a vital component of your Porsche’s intake system, providing clean, filtered air for efficient combustion and engine protection.
Core Functions:
• Filter out dust, dirt, and airborne contaminants from intake air.
• Maintain stable air-fuel ratios for smooth combustion.
• Protect pistons, valves, and cylinder walls from abrasive particles.
• Enhance throttle response and engine performance.
• Support optimal fuel economy and reduced emissions.
A well-maintained air filter ensures that your Porsche engine breathes efficiently — delivering consistent performance and reliability.
Why Do Air Filters Fail or Degrade?
Over time, air filters naturally clog with dirt and debris, reducing their ability to allow clean air into the engine.
Common Causes of Failure Include:
• Blockage from dust, pollen, and road debris buildup.
• Moisture or oil contamination in humid or dusty environments.
• Deterioration of filter media from age or heat exposure.
• Restricted airflow reducing performance and efficiency.
• Damage to seals allowing unfiltered air into the intake system.
A dirty or failing air filter can cause poor fuel economy, reduced power, increased emissions, and potential engine wear — making timely replacement essential.
Why Replace or Upgrade Your Porsche Air Filter?
Regular replacement or upgrading to a performance air filter ensures your Porsche continues to perform at its best, with clean, efficient airflow and maximum engine protection.
Key Benefits:
• Restores engine performance and responsiveness.
• Improves fuel efficiency and throttle sensitivity.
• Protects vital engine components from dust and contaminants.
• Available in reusable, high-performance, or replacement-grade options.
• Compatible with Porsche 911, 944, 968, Boxster, Cayman, Panamera, and Macan
models.
• Ideal for regular maintenance, performance upgrades, or restoration projects.
Design911’s Porsche air filters combine engineering precision and superior materials for maximum performance, protection, and reliability on every drive.
Highlights
• Premium Porsche air filters for performance and
protection.
• Available in paper, cotton, and high-flow sport materials.
• Exact-fit replacement for all Porsche models.
• Improves airflow, efficiency, and engine response.
• Perfect for regular servicing, performance tuning, or restoration.
• Resistant to heat, moisture, and environmental contamination.