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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

DesignTek

DesignTek
About DesignTek

DesignTek for Porsche

DesignTek parts for Porsche models from Design911.

A Quick Look at DesignTek

DesignTek information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.

Choosing the Right Fit for Your Porsche

Where DesignTek is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.

  • Typical reasons to choose these parts include fixing common wear points, returning a Porsche to standard performance, and managing running costs on older cars.
  • Common triggers for replacement are leaks, knocks, worn mounts, poor ride quality, and intermittent operation of affected components.
  • Watch for real-world symptoms such as hesitation, flat spots, noisy or restricted intake, warning lights, rough running, and reduced fuel economy.
  • Before upgrading or tuning, ensure underlying mechanical issues are resolved rather than masked by new parts.
  • When servicing or modifying, inspect adjacent components at the same time to avoid repeat labour or missed wear items.
  • Check what fittings, seals, and hardware are included with each part and add any required extras so the job can be completed in one go.

Browse by Category

If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.

Engine Tuning — Engine tuning components for Porsche are typically used to improve drivability, throttle response, and power delivery, or to support other hardware changes where listed.

  • Confirm the engine’s health and check for boost or vacuum leaks before any tuning work.
  • Review sensor data, oil and coolant temperatures, and fuel delivery to ensure the car is mechanically sound.

Air Filters — Air filters for Porsche applications help maintain correct airflow while protecting the engine from dust and debris, with changes usually driven by routine service or performance goals.

  • Replace filters more frequently if the car is used in dusty or harsh environments.
  • Avoid over-oiling reusable filters to reduce the risk of sensor contamination where fitted.

Air Induction Kits — Air induction kits for Porsche are selected to alter airflow and sound and, where design allows, to reduce restriction or manage intake temperatures as part of a wider tuning package.

  • Ensure the kit maintains proper sealing and sensible intake air temperatures to protect drivability.
  • Check mounting security and routing after installation to minimise rattles, hot-air ingestion, or water exposure.

Service Parts — Service parts for Porsche are changed as part of scheduled maintenance to protect the engine and supporting systems, helping preserve performance, reliability, and efficiency.

  • Use correct-specification oils, filters, plugs, and fluids and keep a clear record of what has been replaced.
  • Shorten service intervals if the car sees frequent short journeys or hard use.

Air Filters — Replacement and performance air filters for Porsche applications are used to maintain clean, consistent airflow and can also support specific performance or motorsport needs where appropriate.

  • Inspect the airbox or housing when changing the filter and ensure the seal seats evenly all the way around.
  • If a performance filter is used, follow the maker’s cleaning and re-oiling instructions carefully.

Explore DesignTek at Design911

View the current DesignTek range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

DISPLAYING 225 to 240 (of 446 products)
95511303700/1
Product Information
Product Information
Exhaust Catalytic Converter Porsche 957 Cayenne 3.0 Diesel.

This is standard replacement primary Catalytic Converter.

designtek

Fits:
Porsche 957 Cayenne 3.0 DIESEL Tiptronic S 1/2009-02/2010
M059D engine (1st cat; DPF models)


Length*: 715mm
Weight: 4.7kg


* Lengths are measured flange to flange in a straight line (shortest distance) and should only be used as a guide

Warranty: 2 years manufacturer's warranty

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95511303700
7L6254300RX
7L6254301FX
7L6254301NX
7L8254300LX
955113037AX
95511303700BM
95511303700
95511303710

The product you are viewing cross references to these numbers
955113023GX/1
Product Information
Product Information
Exhaust Catalytic Converter Porsche 957 Cayenne 3.0 Diesel.

This is standard replacement secondary Catalytic Converter made out of cordierite.

designtek

Fits:
Porsche 957 Cayenne 3.0 DIESEL Tiptronic S 1/2009-02/2010
M059D engine (Euro 4 DPF only)


Length*: 680mm
Weight: 4.6kg

* Lengths are measured flange to flange in a straight line (shortest distance) and should only be used as a guide

Warranty: 2 years manufacturer's warranty

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955113023GX
7L8131709D
7L8254400NX
95511302360
955113023GX

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Special Offer
3606109978
Product Information
Product Information
Exhaust manifold with cat bypass. These headers are offroad use only.

designtek

Fits:
Porsche 997.2 Carrera 2009-12

Made out of 304 grade stainless steel and would provide gains of 15 BHP. Remapping of the car after fitment is highly recomended.

Please note: These sport cats will make your car sound louder than with stock cats. If you have ,or intend to install sport silencers, you may find the car is a bit loo loud. We recommend to use one sport exhaust component if you are concerned about decibel levels.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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3606109978
99711310932
997113109AX
99711311032
997113110AX

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Special Offer
3606008603
Product Information
Product Information
This is a rear section (cat-back) exhaust for the Porsche 986 Boxster, which also comes with 76MM, chrome finish tailpipes. 

Fits:
Boxster 986 2.5 / 2.7 / 3.2 1997-2002
Boxster 986 2.7L / 3.2L 2003-2004
The exhaust may require a small bracket modification to lower the system slightly. We recommend professional workshop installation. 

NOTE: 
This exhaust system is significantly louder than the standard configuration. For a quieter alternative that more closely matches the original sound level, please consider using part number 98622094335S instead.



Related reference numbers
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3606008603
3606008603
99611112107
99611114105
99611114111
99611114202
99611114211
99611115101
99611115202

The product you are viewing cross references to these numbers
Special Offer
3606309101
Product Information
Product Information
Designtek Exhaust Manifold / Header.
PRICE IS FOR A PAIR

designtek

Fits:
Porsche 991.1 Turbo

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3606309101
3606309101
64-601S
99111171171
99111171172
99111171271
99111171272

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Special Offer
3606009121
Product Information
Product Information
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Exhaust VALVETRONIC system with Cat-bypass and Tail pipes. Stainless steel.


designtek

Fits:
Porsche 991.1 Turbo

For Wiring Diagram please CLICK HERE

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.



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3606009121
3606009121
55-PS124V
98711310133
987113101AX
98711310233
987113102AX

The product you are viewing cross references to these numbers
3606009120
Product Information
Product Information
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Titanium exhaust system with titanium valve and titanium tail pipe.

designtek

Fits:
Porsche 991.1 Turbo


For Wiring Diagram please CLICK HERE

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3606009120
3606009120
55-PS124-T
99111173170
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Special Offer
3606109873
Product Information
Product Information
Performance headers Improve exhaust flow and sports car sound, designed for customer with tuned vehicles as these are catalytic bypass units.

designtek

FEATURES:
Fits all Porsche 987.2 Boxster / Cayman vehicles (2009-2012)


• Catalytic converter bypass for maximum performance
• Constructed from T304 stainless steel
• C.N.C. mandrel-bent tubing for improved torque and equalized engine pulsing
• More power and torque across the RPM band and dramatically improved sports car sound
• Complete with gaskets
• Direct replacement for the OEM headers with no cutting or welding required

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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3606109873
3606109873
98711310133
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Special Offer
3606009749
Product Information
Product Information
Sports exhaust system with 3" pipes for Porsche 997TT Gen2 "Super Sport" exhaust produced to give a great deep sports car super sound that every 997 turbo driver desires plus the added benefit of a huge weight advantage over the original factory unit.

designtek

The system utilises the factory cats and factory tail pipes

Fits:
Porsche 997 Turbo MKII 2009>>

Related reference numbers
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3606009749
3606009749
99711102730
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Special Offer
3606009104
Product Information
Product Information
Exhaust muffler bypass X-Pipe.

designtek

Fits:
Porsche 991 C2S / C4S

Click 'Zoom in' for large parts diagram.
3606009104 replaces No 17.

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only.


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3606009104
3606009104
99111133105
99111133107
99111133504
99111133505
99111133506
99111133507
99111133701
99111133702
99111133703

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Special Offer
99711168001/1
Product Information
Product Information
Sport exhaust vacuum replacement unit.

designtek

Fits:
All DesignTek Valvetronic / switchable systems

Click 'Zoom in' for large parts diagram.
Diagram ref no 5.

Fits Left or Right. Price is for each.

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99978091
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Track Bucket Sports Seat - DTX RECLINE

designtek

Fit most 911's, 996, Boxster, 997, Cayman

Light weight carbon fibre bucket seats with reclining back rest and removable back and bottom pads.

This seat is available in following materials:
Leather, Alcantara, Leather (outer) & Alcantara (inner).

These sports seats are manufactured for all makes and models.
Due to the universal nature of this product some modification or
alteration maybe required to the seat or car to ensure correct fitting


To view more detailed pictures please CLICK HERE

- These seats come complete with bottom sliders and side brackets. You will need to order extra
Code: SB017DR (LEFT SEAT) and SB017PA (RIGHT SEAT) for seat fixing adaptors for 986/996/997/987/CAYMAN.

Price is per seat.

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99978091
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EXHAUSTKIT79
Product Information
Product Information
Sports valvetronic switchable Exhaust + Headers + 200 Cell Exhaust Catalytic Converter

designtek

DesignTek 996 Exhaust package. High Grade exhaust system for Porsche 996 1998-2004.

Includes sports mufflers, headers, Replacement Exhaust Catalytic Converter giving that nice deep sound you can really hear and feel the extra power sports.

Fitting clamps in the images are not included.




NOTE: In the United Kingdom, sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001. They are not MOT compliant and cannot be used on public roads. These components are intended solely for race and track use.

For vehicles manufactured before 1st March 2001, a non-type approved sports catalytic converter may be fitted, provided it offers comparable performance to the original and the vehicle continues to meet the applicable emissions standards for its age. The vehicle must still pass an MOT test.

If you are located outside the UK, please check your local laws and regulations to ensure compliance.

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95511302411/1
Product Information
Product Information
Exhaust Catalytic Converter Porsche 955 3.2i V6 8/03-4/07 (2nd cat). Standard replacement secondary Catalytic Converters.

designtek

Fits:
Porsche 955 3.2i V6 8/03-4/07 (2nd cat)

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95511302411
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92811321904/1
Product Information
Product Information
Exhaust catalytic converter.

designtek

Fits:
Porsche 928 5.4i GTS 8/91-11/95


Our cat is made up of the following components:

  • Ceramic monolith of a honeycomb design to allow free air flow and maximum surface area, coated with precious metals to enable the conversion of gasses that pass through it
  • Interam matting to hold the monolith in place. The matting expands when exposed to heat to supply the pressure needed to keep the monolith secure
  • A grade 409 stainless steel can (or housing) to provide protection and enable the cat to be built into the exhaust system. 409 grade can contain upto 90% iron and will be prone to rust. It still has higher rust-resistant properties than mild steel.


Related reference numbers
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92811321904
92811321904

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94411198904/1
Product Information
Product Information
Exhaust catalytic converter.

designtek

Fits:
PORSCHE 944S 2.5i (M44.40 engine) 1/86-7/88
PORSCHE 944S2 3.0i (M44.41 engine) 8/88-7/92

A grade 409 stainless steel can (or housing) to provide protection and enable the cat to be built into the exhaust system. 409 grade can contain upto 90% iron and will be prone to rust. It still has higher rust-resistant properties than mild steel.



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94411198904
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DISPLAYING 225 to 240 (of 446 products)