Airbox / Housings

x4 Angle Brackets and x1 Air Filter Included.
Fits:
Porsche 993 Carrera 2 / 4 1996>>1998
Cars With Option Codes:
159 - Motor Sound Package
Cars With Engine Codes:
6421 / 6422 / 6423 / 6424
Diagram Ref No 1 (Diagram Ref No 2, 3 And 4 Included)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311003008
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97


Fits:
Porsche 993 Turbo 1994-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311036051
The product you are viewing cross references to these numbers
- Porsche 993 (911) TURBO 1994-96


Fits:
Porsche 993 C2 / C4 1994-98
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311003056
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Airboxes & Air Filter Housings – Clean Airflow for Peak Porsche Performance
Airboxes (also known as air filter housings) play a vital role in your Porsche’s intake system by securely housing the air filter and directing clean air into the engine. Designed to optimise airflow while protecting the engine from dust, debris, and contaminants, airboxes ensure maximum performance, fuel efficiency, and reliability under all driving conditions.
At Design911, we offer a comprehensive range of genuine and high-quality airboxes and air filter housings for various Porsche models including the transaxle cars, 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each housing is precision-engineered for a perfect fit, maintaining proper airflow and filtration for superior engine health and performance.
What Do Airboxes & Air Filter Housings Do?
The airbox is a critical component in your Porsche’s air
intake system, performing several important functions:
- Houses
and seals the air filter to ensure only clean, filtered air enters the
engine.
- Optimises
airflow for improved throttle response and engine performance.
- Reduces
intake noise while balancing air pressure.
- Protects the air filter from water, heat, and debris exposure.
Properly functioning air filter housings maintain engine efficiency, reduce wear, and ensure smooth, consistent performance — particularly in high-performance Porsche applications.
Why Do Airboxes & Air Filter Housings Fail?
Over time, airboxes and housings can deteriorate due to
exposure to heat, vibration, and environmental conditions. Common causes of
failure include:
- Cracked
or warped housings due to heat cycling or impact damage.
- Broken
clips or seals leading to unfiltered air leaks.
- Moisture
or debris intrusion causing filter contamination.
- Distortion from improper fitment or previous repairs.
- Aging materials such as brittle plastic or rubber gaskets.
Symptoms of a failing airbox include reduced engine performance, check engine lights, poor throttle response, or visible damage or looseness around the air filter housing.
Why Replace a Damaged Airbox or Housing?
A compromised airbox can allow unfiltered air and debris to enter the engine, leading to premature wear or poor combustion efficiency. Replacing damaged or aged components restores proper sealing, improves airflow, and protects your Porsche’s engine from contamination.
Benefits of replacement include:
- Restored air filtration and clean airflow.
- Improved throttle response and power delivery.
- Prevention of engine damage from dust or debris.
- Long-term reliability with manufacturer-quality precision.
Our airboxes and housings are constructed from high-strength materials for exceptional durability, precise sealing, and optimal airflow dynamics — engineered to maintain your Porsche’s performance and refinement.