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Airbox / Housings
Carbon Fibre Rear Window Air Intake Kit
Transform the appearance and functionality of your Porsche
993 with this premium Carbon Fibre Rear Window Air Intake Kit. Inspired by
motorsport engineering and modern restomod design, this innovative system
channels air from specially designed rear quarter windows through a central
carbon fibre intake tube, delivering a unique visual statement while providing
a functional airflow path to the engine bay.
Fits:
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Designed exclusively for Porsche 993 Coupe models, this kit combines lightweight carbon fibre construction, CNC-machined aluminium components and factory-tinted acrylic side windows to create one of the most distinctive upgrades available for air-cooled Porsche enthusiasts.
Whether you're building a high-end restomod, creating a track-inspired road car or simply looking for a unique engine bay airflow solution, this system delivers a stunning combination of form and function.
What Does the Rear Window Air Intake Do?
The system draws air through specially supplied factory green-tinted acrylic rear side windows and channels it through a central carbon fibre intake tube.
When installed with the optional rear shelf opening, the
intake system:
- Directs additional airflow towards the engine bay
- Creates a motorsport-inspired induction pathway
- Enhances engine compartment ventilation
- Provides a unique performance appearance
- Adds distinctive visual character to the vehicle
- Delivers authentic race-inspired styling
The result is a striking rear cabin feature that instantly differentiates your Porsche from standard models.
Functional or Cosmetic Installation Options
One of the unique advantages of this system is installation flexibility.
Functional Air Intake Installation
Using the supplied cutting template, an opening is created in the rear shelf structure, allowing airflow from the intake system to reach the engine compartment.
Benefits include:
- Functional engine bay air feed
- Enhanced airflow routing
- Authentic motorsport-inspired setup
- Maximum visual and engineering impact
Non-Cut Cosmetic Installation
The system can also be securely mounted without cutting the rear shelf.
Benefits include:
- Fully reversible appearance upgrade
- No structural modifications required
- Maintains originality
- Creates the same visual impact
Please note - without cutting the rear shelf, no air is routed into the engine bay and the installation serves as a styling enhancement only.
Premium Carbon Fibre Construction
At the centre of the system is a lightweight carbon fibre intake tube incorporating an integrated debris protection system.
Features include:
- Lightweight carbon fibre construction
- Internal black debris mesh installed
- Motorsport-inspired appearance
- Excellent rigidity and durability
- Available in multiple finish options
Carbon Fibre Finish Options
Choose from:
- Raw visible carbon fibre (no clear coat)
- Gloss clear coat finish
- Satin clear coat finish
All options utilise the same high-quality carbon construction and differ only in appearance.
CNC-Machined Aluminium Window Bezels
The intake windows connect to the carbon tube using precision CNC-machined aluminium joints.
Available finishes include:
- Polished aluminium
- Matte silver
- Matte black
Each bezel incorporates an internal wire mesh screen designed to prevent leaves, stones and road debris from entering the intake system.
Factory Green-Tinted Rear Side Windows
The kit includes replacement rear quarter windows manufactured in factory-style green-tinted acrylic.
Benefits include:
- OE-inspired appearance
- Lightweight construction
- Clean integration with the intake system
- Excellent visual clarity
- Motorsport-inspired styling
Debris Protection Built In
To protect the engine bay and intake pathway, each aluminium bezel includes a factory-installed wire mesh insert.
This helps prevent:
- Stones Leaves
- Dirt Road debris
- Foreign objects
The mesh is installed during manufacturing and requires no additional assembly.
Important Compatibility Note
Due to differences in C-pillar geometry, this system is not
compatible with:
Porsche
993 Targa
Please confirm vehicle body style before ordering.
Included in the Kit
Every kit includes:
- Carbon fibre intake tube
- Integrated debris protection mesh
- Left-hand rear side window in factory green tint
- Right-hand rear side window in factory green tint
- CNC-machined aluminium connecting bezels
- Cutting template
- Full installation guide
Why Upgrade?
This rear window air intake system is one of the most visually striking upgrades available for Porsche 993 Coupe models.
Benefits include:
- Unique motorsport-inspired styling
- Lightweight carbon fibre construction
- Functional airflow capability
- Premium CNC-machined components
- Restomod-inspired appearance
- Enhanced engine bay aesthetics
- Highly distinctive rear cabin design
- Exclusivity and rarity
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
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12 Month Warranty
Worldwide Delivery
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.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed