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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://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net 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 401 to 416 (of 455 products)
3606109641
Product Information
Product Information
Exhaust Catalytic Converter Pipes 100 Cell

designtek

DesignTek stainless steel sports 100 cell catalyst, with German hi-flow catalyst. Produces more air flow which in turn produces more power. Designed to give a deeper more sporter sound.

This product comes with the hole to re-fit the lambda sensor.

Fits:
Porsche 964 C2 / C4 1989-94

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.

Design 911 Recommends this product best value and best quality

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.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606109641
96411321306
96411321310
96411321316
96411321317
96411104205

The product you are viewing cross references to these numbers
3606209641
Product Information
Product Information
Exhaust Catalytic Converter Bypass Pipes

designtek

DesignTek stainless steel catalyst by-pass produces more air flow which in turn produces more power. Designed to give a deeper more sporter sound.

This product comes with the hole to re-fit the lambda sensor.

Fits:
Porsche 964 C2 / C4 1989-94

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.

Design 911 Recommends this product best value and best quality

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.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606209641
96411321306
96411321310
96411321316
96411321317
96411104205

The product you are viewing cross references to these numbers
3606006404
Product Information
Product Information
designtek

Race cup pipe 2 part designed to replace the pre-silencer silencer box. The Cup pipe allows fast air flow and weight saving which together produces more BHP. Made from High grade T304 stainless steel.
The race pipe also changes the sound to a deeper sound, this design of race pipe was originally first fitted to the 964RS.

Made by DesignTek

Fits:
Porsche 964 C2 / C4 1990-94

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606006404
3606006404
92.200S
1620700800
96411104504
96411104502

The product you are viewing cross references to these numbers
3606006401
Product Information
Product Information
Exhaust Muffler / Silencer Rear box Race System

designtek

DesignTek Maximum power and aggressive sports car sound exactly like the factory 3.8L Supercup 964's. primarily intended for the track or race. This system has some resonance and is very sporty and aggressive. Please note this system bypass the cats and the heating system of the car.

This kit includes:
Headers
Rear Box
This kit does not include the CATS. Header to engine gaskets are not included. You can add them to the basket when you buy this exhaust.


Manifold to Head internal diameter is 39MM

Manifold to Rear silencer internal diameter is 56MM




Fits:
Porsche 964 1990-94





Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606006401
3606006401
116081
69-PS101
96411104504
96411104605
96411104205
96411321316
96411321315
96411104502
96421104004
96421103905
96421103932

The product you are viewing cross references to these numbers
3606501101
Product Information
Product Information
Exhaust Pre-Silencer Sports DesignTek.

designtek

Fits:
Porsche 911 2.7L / 3.0SC / 3.2 Carrera 1974-1989*

*If your car is 74-85 - without oxygen sensor, please order one of blanking plug (not included with pre silencer) part number 333660211

Easy bolt-on up to 11BHP. T304 Stainless steel with polished showcar mirror shine. Fits cars with or without oxygen sensors. Just like Porsche factory German catbypass Euro-premuffler.

*Recommend as our best performing Exhaust Pre-silencer

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606501101
93011118301
93011118303

The product you are viewing cross references to these numbers
360620993
Product Information
Product Information
Exhaust Catalytic Converter Bypass Pipes

Fits:
Porsche 993 C2 / C4 / C2S / C4S / RS 1994-98

DesignTek sports catalytic bypass pipes, manufactured from T304 mandrel bent stainless steel. +15 emissions legal horsepower. Simple installation. Cat-back. Sportier/throatier than motor sound packages and other mufflers. Lightweight -saves 27 lbs. over stock therefore better handling. No cracking, splitting or failures like competitors systems! Greatly improved throttle response with lower engine temperature. System works well with all performance improvements.

Fitting this product might not pass a UK MOT approved.

Fits to BISCHOFF heat exchangers with gasket 93011119206 or GILLET heat exchangers with gasket 92811112702
Select below

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: 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.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

360620993
99311321316
99311321338
99311321344
99311321343
99311321317
99311321337
99311321321
99311321334

The product you are viewing cross references to these numbers
3606009303
Product Information
Product Information
Exhaust Muffler / Silencer Sport System

Fits:
Porsche 993 turbo - 1994 to 1998
Porsche 993 turbo S - 1997 to 1998

The DesignTek Twin Turbo Sport Exhaust System is manufactured from 16 gauge, mandrel bent T304 Stainless Steel tubing and it's lightweight saves 35lbs over the original Porsche system.
This system has a super throttle response with lower engine temperatures, a throaty Sportscar sound, and no resonance. The DesignTek Muffers above are the highest performance system available anywhere in the world for the 993 turbo.

How & Why?
DesignTek use 2.5inch (63.5mm) tubing though out the system for the lowest possible backpressure and best flow, more flow than anything on the market!. Fabulous sound with significant power improvement.




Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606009303
99311104554
99311104555
99311104654
99311104655

The product you are viewing cross references to these numbers
3606009301
Product Information
Product Information
Exhaust Muffler / Silencer Rear boxes Sports Sound (slightly louder over stock exhaust) Set of 2 Left & right 

designtek

DesignTek sport exhaust rear boxes are design to give a better throttle response, and also allowing the engine to breather. DesignTek exhaust sounds slightly deeper than the original Porsche standard exhaust. All DesignTek Exhaust Systems are manufactured from 14 - 16 gauge extra heavy duty T304 stainless steel, which eliminates the splitting, cracking and annoying resonance.

Fits:
Porsche 993 1994-97 (not Turbo & GT2)

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606009301
55-PS104
125454
99311104614
99311104613
9931110461
99311104513
99311104514
9931110451

The product you are viewing cross references to these numbers
94411198502/1
Product Information
Product Information
Exhaust muffler / silencer centre box. Stainless steel centre box replacement with muffler.

designtek

Fits:
Porsche 944S 2.5L 16 valve
Porsche 944S2 3.0L 16 valve

Fits only 16 VALVE ENGINES

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94411198502
94411198502

The product you are viewing cross references to these numbers
3606109861
Product Information
Product Information
Exhaust Catalytic Converter Pipes Sports 200 CELL

designtek

DesignTek emissions legal horsepower - throaty sports car sound, but not too loud for every day driving, manufactured from extra heavy duty stainless steel, which eliminates the splitting, cracking and annoying resonance.

Made by DESIGNTEK

Fits:
Porsche Boxster 986 2.7L / 3.2L

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: 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.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606109861
99611302111
99611302112
996113021AX
99611302502
99611302503
996113025AX
99611302504
996113025BX
99611302211
99611302212
996113022AX
99611302602
99611302603
996113026AX
99611302604
996113026BX

The product you are viewing cross references to these numbers
3606308602
Product Information
Product Information
Exhaust Manifold / Header DesignTek

Fits:
Porsche Boxster 986 2.5L / 2.7L / 3.2L Manual Only

DesignTek sports headers for throaty sports car sound, but not too loud for every day driving, manufactured from extra heavy duty stainless steel, which eliminates the splitting, cracking and annoying resonance.

Related reference numbers
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3606308602
99611110300
99611110400
99611110105
99611110106
99611110205
99611110206

The product you are viewing cross references to these numbers
3606008601
Product Information
Product Information
Exhaust Muffler / Silencer Sports System

DesignTek Boxster Performance exhaust. High Grade stainless steel exhaust system for Boxster 986 1998-2004. 14 - 16 gauge T304 stainless steel. Feel better throttle response and hear a real superb sports car sound.

Fits:
Porsche Boxster 2.7L & 3.2L
Porsche Boxster 2.5L with an extra fitting kit Part No 00004420011.

Highly Recommended

" I can confirm that I have ordered from you last week the exhaust that you mentioned below and collected in person on Thursday morning (just to note for future reference, you do not need the Porsche elbow bends to connect as there are new bends in the DesignTek box). I would like to thank you for your recommendation. The exhaust is fitted and sounds amazing, just as the car should. Thank you again for all of your help and I can confirm that I will be using Design 911 for future purchases.

A very happy customer.

Regards Edward J "


Related reference numbers
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3606008601
99611112106
99611112107
99611114105
99611114111
99611114202
99611114211
99611115101
99611115202

The product you are viewing cross references to these numbers
3603300003
Product Information
Product Information
DesignTek Silicone Boost Pipes / Hoses

Porsche 997 Twin Turbo high performance silicone intake hose kit adds +15Bhp. Fits all Porsche 997TT models worldwide. These are super strong super durably heavy duty replacement hoses for the weakest link and "Achilles heel" in all Porsche 997 Turbo factory stock hoses. The factory 997 TT hoses and clamping systems work adequately on stock cars but once you modify the car and have more boost you need our heavy duty race quality silicone hose kit to eliminate the hoses from expanding.

Fits:
Porsche 997 Turbo
Porsche 997 GT2

Related reference numbers
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3603300003
99711063101
99711063102
99711063001
99711063002
99711064403
99711064503

The product you are viewing cross references to these numbers
3606609701
Product Information
Product Information
Exhaust Muffler / Silencer Conversion Pipes
DesignTek GT3 style exhaust pipe conversion with 2 x 100mm centre outlets.

designtek

Fits:
Porsche 996 C2/C4/C4S
Porsche 997 GEN1 C2/C4/C4S *Use with 996 Exhaust boxes
Porsche 997 GEN1 C2/C4/C4S *Use the existing 997 Exhaust boxes, cut & weld the flange connection

Please note:

This exhaust pipe is used when you are fitting GT3 (centre exit) rear bumper.
3606409733
Product Information
Product Information
DesignTek Exhaust tail pipes twin round design, Chromed.
Stainless steel quad tail pipes.

designtek

Fits:
Porsche 997 MKII 3.6L
Porsche 997 MKII 3.8L

* Not for cars with factory sport exhaust

Price is for a PAIR

Related reference numbers
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3606409733
99711115130
99711135130
99711198330
99711199140
99711115230
99711198430
99711198234
99711198134

The product you are viewing cross references to these numbers
3606109971
Product Information
Product Information
designtek

Exhaust Sports 200 Cell Catalytic Converter Pipes

DesignTek Sport 200 Cell Catalytic Converters for Porsche 997 Models. Gives a power gain of +12 to 15BHP. Made from High grade stainless steel.

Fits:
Porsche 997 Carrera 3.6L
Porsche 997 Carrera S 3.8L

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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3606109971
3606109971
99711303302
997113033AX
99711303304
99711303305
99711303306
99711303500
997113035AX
99711303501
99711303503
99711303504
99711303505
99711303402
997113034AX
99711303404
99711303405
99711303406
99711303600
997113036AX
99711303601
99711303603
99711303604
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The product you are viewing cross references to these numbers
DISPLAYING 401 to 416 (of 455 products)