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Airbox / Housings
- 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
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GTS 2016
Porsche 982 (718) Boxster GTS 4.0L 2017>>
Porsche 982SP Boxster Spyder 2019>>
Porsche 982C (718C) Cayman 2GTS 4.0L 017>>
Porsche 982C Cayman GT4 2019>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98111013
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
Fits:
Porsche Boxster 986 (except Special model 50 years Spyder)
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611012110
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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- 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 944S 2.5L 16V 1987-88
Sold each
Fits:
Porsche 911 - 1984 to 1986
Porsche 964 - 1989 to 1994
Porsche 944 S - 1987 to 1988
Porsche 986 Boxster - 1997 to 2004
Porsche 996 - 1997 to 2005
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970326500
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Speed Nut 4,8
This original Porsche fastening nut is used to secure the air cleaner housing cover, helping keep the intake air box assembly correctly fastened and sealed.
Sold individually, 2 required per vehicle
Fits
- Porsche 987 Boxster / Boxster S 2005 – 20008
- Porsche 987C.1 Cayman 2.7L / 3.4L 2006 – 2008
Diagram ref no 4
This is a small factory fastening component used on the air cleaner / air intake housing assembly.
What This Part Does / Functions
• Secures the air cleaner housing cover
• Provides a fixing point for the air box cover screw
• Helps keep the air cleaner cover correctly seated
• Supports proper air cleaner housing assembly fitment
• Replaces a missing, corroded, worn or damaged original speed nut
• Helps prevent loose air box cover panels
• Provides correct Genuine Porsche fitment and fastening specification
• Supports proper reassembly after air filter or intake system service.
Why Replace This Part?
Speed nuts can become worn, corroded, bent or lost during air filter replacement and intake system servicing. If the speed nut is missing or damaged, the air cleaner housing cover may not secure correctly, which can cause poor fitment, rattling or incorrect sealing of the air box cover.
Replacing it with a Genuine Porsche speed nut helps restore the correct factory fastening arrangement.
When to Replace This Part
• During air filter replacement if the speed nut is missing or damaged
• When removing or refitting the air cleaner housing cover
• If the cover screw no longer holds securely
• During air box or intake housing repair
• If the original clip nut is corroded, loose or distorted
• When replacing worn air cleaner housing hardware
• During engine bay restoration.
Where It Fits on the Car
This speed nut fits on the air cleaner housing cover / air box cover assembly. It provides the retained threaded fixing point for the cover hardware.
Correct installation helps ensure the housing cover sits securely and the air cleaner assembly remains properly fastened.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99950744201
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
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- 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
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster - 2005 to 2012
Porsche 987 Cayman - 2006 to 2012
Porsche 996 - 1997 to 2004
Porsche 997 - 2005 to 2012
Porsche 991 - 2012 5o 2019
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAF008434
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 986 2.7L 2003-04
The Porsche Water Drain Tube 99611029700 is a genuine Porsche replacement drain pipe used within the air-cleaner and water-trap assembly on selected Porsche 986 Boxster models.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster 986 2.7L 2003-04
Diagram Ref No 18
Located in the engine air-intake system, the tube provides a controlled route for water collected by the air-cleaner water trap to drain away rather than remaining around the intake assembly.
Its role is particularly important in helping keep accumulated rainwater and moisture away from the air-filter element and intake tract.
Manufactured as a genuine Porsche component, it provides the correct dimensions and fit for the original air-cleaner installation.
What This Product Does:
The air-cleaner system must provide the engine with clean intake air while helping prevent unwanted water and debris from reaching the filter and intake tract.
The water trap separates collected moisture from the incoming air path, while the drain tube allows this water to escape.
The water drain tube helps:
- Drain collected water from the air-cleaner water trap
- Prevent standing water around the air-filter assembly
- Reduce the risk of the air-filter element becoming unnecessarily wet
- Direct moisture away from the intake system
- Maintain the intended operation of the Porsche air-cleaner assembly
- Keep the original water-management system complete
- Replace a split, blocked, hardened or missing original drain pipe
Symptoms Of Wear Or Failure:
The drain tube can deteriorate through age, heat exposure, contamination and repeated temperature cycling.
Possible symptoms include:
- Visible cracks or splits in the tube
- Hardened or brittle material
- Tube becoming loose or detached
- Distorted or collapsed tubing
- Blockage from dirt or debris
- Water remaining in the air-cleaner water trap
- Moisture or standing water around the airbox
- Damp air-filter element
- Water staining around the air-cleaner assembly
- Incorrect drainage into the surrounding engine compartment
- Missing drain tube during inspection
Because this component is primarily a drainage part, deterioration may not immediately produce an engine warning light or obvious drivability problem.
Why Replacement Matters:
Although relatively small, the drain tube forms part of Porsche's original intake water-management system.
A damaged or obstructed tube can prevent collected water from draining correctly.
Continued use with a failed drain tube may contribute to:
- Persistent moisture around the air cleaner
- Premature air-filter deterioration
- Unwanted water accumulation
- Corrosion or staining of surrounding components
- Reduced effectiveness of the air-cleaner water trap
- Increased risk of moisture progressing further into the intake system
Replacing a deteriorated tube restores the intended drainage route and helps protect the air-cleaner assembly from unnecessary moisture accumulation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611029700
The product you are viewing cross references to these numbers
-
water cooling - 3 - for 986 Boxster 1997-04 105-15
-
air cleaner 986 Boxster 1997-04 106-00
-
throttle body 986 Boxster 1997-04 107-00
-
water cooling - 3 - for 987 Boxster / Boxster S 2005-08 105-15
-
air cleaner 987 Boxster / Boxster S 2005-08 106-00
-
Water cooling 3 (Model: A120,A121) 987.2 Boxster / Boxster S 2009-12 105-015
-
Air filter 981.SP Boxster Spyder 2016 106-000
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.