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Catalyst / Bypass

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DISPLAYING 1 to 20 (of 20 products)
Exhaust Cat Heat Sheild Set. Porsche Boxster 986
Code: HEATKIT986
Exhaust Cat Heat protection plate kit.

porsche

Fits:
Porsche Boxster 986 cat.

Click 'Zoom in' for large parts diagram.
Diagram Ref No 17,18, 25, 26 and 27.

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Related, superseded, cross reference or alternative numbers for comparison.

HEATKIT986
99611342200
99611342100
99611342100
99611342200
99950743009
90015100703
99950741308

The product you are viewing cross references to these numbers
About this kit
Kit
Exhaust Manifold with Catalytic Converter OE. Porsche 987 3.2 Boxster
Code: 98711310
Exhaust Manifold with Catalytic Converter. Reconditioned unit with deposit charge. Refundable on return of old unit.
porsche

Please note:
Reconditioned units are sold on an exchange basis, A surcharge of £1120.80 will be held and then refunded when the old one is returned.

Fits:
Porsche 987 3.2L Boxster M96.26 Engines

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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Related, superseded, cross reference or alternative numbers for comparison.

98711310
98711310605
98711310606
987113106AX
98711310505
98711310506
987113105AX

The product you are viewing cross references to these numbers
Porsche Genuine Parts
Exhaust Manifold with catalytic converter OE. Porsche 987 3.2 Boxster
Code: 98711310
exchange
Reconditioned exhaust manifold with catalytic converter.

Please note:
Reconditioned units are sold on an exchange basis, A surcharge of £1120.80 will be held and then refunded when the old one is returned.

porsche

Fits:
Porsche 987 2.7L Boxster M96.25 Engines
Porsche 987 2.7L Cayman M96.25 Engines

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

Please note:
Reconditioned exhaust manifolds are sold on an exchange basis, A surcharge of £477.00 will be held and then refunded when the old one is returned.



    PLEASE NOTE:
  • The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
  • Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
  • Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
  • All surcharges and exchanges are subject to our terms and conditions.




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98711310
98711310305
98711310306
987113103AX
98711310405
98711310406
987113104AX

The product you are viewing cross references to these numbers
Porsche Genuine Parts
9m Equal length exhaust manifold with catalytic converter. Porsche 981 Boxster / 981 Cayman
Code: 98111321105/1
Equal length exhaust manifold with catalytic converter. 
Sold as a pair - left and right

ninemeister

Fits:
Porsche 981 Boxster - 2012 to 2016
Porsche 981 Boxster S - 2012 to 2016

Porsche 981 Boxster GTS -  2012 to 2016
Porsche 981 Boxster Spyder - 2016
Porsche 981 Cayman - 2013 to 2016
Porsche 981 Cayman S - 2013 to 2016
Porsche 981 Cayman GTS - 2013 to 2016
Porsche 981 Cayman GT4 - 2016

Made from SS304L lightweight stainless steel these exhaust manifolds offer reduced back pressure with higher flow

  • Performance gains of 20hp minimum and 20nm
  • Improved throttle response
  • Improved exhaust note with no drone, resonation or vibration
  • Direct fit no remap required but recommended
  • No CEL
  • Heat shielded to reduce radiant heat and speeds up exhaust gas velocity



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

98111321105
98111321101
98111321102
98111321103
98111321104
98111321105
981113211EX
98111321106
981113211FX
98111321201
98111321202
98111321203
98111321204
98111321205
981113212EX
98111321206
981113212FX

The product you are viewing cross references to these numbers
Special Offer
DesignTek Exhaust manifold / header with catalyst bypass for Porsche 987.2 Boxster / 987.2 Cayman
Code: 3606109876
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Exhaust manifold / header with catalyst bypass.
Price is for PAIR.

designtek

Fits:
Porsche 987.2 Boxster 2.9L / 3.4L 2009-12
Porsche 987C.2 Cayman 2.9L / 3.4L 2009-12

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. 


Related reference numbers
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3606109876
3606109875
98711310133
987113101AX
98711310233
987113102AX

The product you are viewing cross references to these numbers
Best Product
Exhaust 100 cell catalytic converter pipes sports. Porsche Boxster 986 2.5L
Code: 986PO94260S
Exhaust 100 cell Catalytic Converter Pipes Sports

dansk

Fits:
Porsche 986 Boxster 2.5L 1997-99

Please note: These 100 cell 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.

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.

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. 


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

986PO94260S
996113921AX
996113922AX
99611399201
99611392101
1620300810

The product you are viewing cross references to these numbers
Best Price
Exhaust cat heat shield. Porsche Boxster 986
Code: 99611342
Exhaust cat heat shield. 

porsche

Another popular item which normally rusts and starts to rattle. Heat protection plate for Porsche Boxster 986 cat.

Price is for each heat shield

Click 'Zoom in' for large parts diagram.
Diagram Ref No 19 and 20


Related reference numbers
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99611342
99611342200
99611342100

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Porsche Genuine Parts
Exhaust catalytic converter bypass pipe for Porsche Boxster 986 DesignTek
Code: 3606109862
Exhaust catalytic converter bypass pipe for Porsche Boxster 986

designtek

Manufactured from highest quality T304 grade stainless steel
Mandrel bent and fully TIG welded for strength and durability
CNC machined flanges for strong, solid support and an accurate fit
Designed to improve power and torque across the entire RPM range
Noticeably improves throttle response
Please note fitting instructions are NOT included
Sold for off-road / track use only
We recommend all exhaust components are fitted by a qualified mechanic to ensure the correct fitment

Fits:
Porsche Boxster 986 2.5L / 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.

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. 


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

3606109862
996113921AX
996113922AX
99611392101
99611392201
99611302111
99611302112

The product you are viewing cross references to these numbers
Best Product
Exhaust Catalytic Converter Bypass Pipes. Porsche Boxster 986 2000-04
Code: FSPOR9861PCB
Fabspeed Secondary Cat Bypass Pipes.

fabspeed

Replaces the heavy, restrictive, and redundant factory secondary catalytic converters with a straight-through tubing section for increased power, sound, and weight savings.

FEATURES:
Fits: all 986 Boxster / S vehicles (2000-2004)
• Increases horsepower by 8 whp improving throttle response
• Saves 25 lbs from the vehicle versus factory OEM restrictive catalytic converters
• Constructed from high quality T304L stainless steel with CNC mandrel-bent tubing
• Improves horsepower, torque, throttle response and exhaust note
• Easy bolt-on installation; no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
• Not UK MOT appoved.

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

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.

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. 


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

FSPOR9861PCB
98611112109
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
Best Price
Exhaust Catalytic Converter Pipes Sports for Porsche Boxster 986 DesignTek
Code: 3606109861
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.


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. 



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
Best Product
Exhaust catalytic converter pipes sports. Porsche Boxster 986 2.7L / 3.2L
Code: 986PO94360S
Exhaust Catalytic Converter Pipes Sports 100 CELL

dansk

Fits:
Porsche 986 Boxster 2.7L / 3.2L 1994-04

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.

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.

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. 



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

986PO94360S
99611302111
996113021AX
99611302112
99611302502
996113025AX
99611302504
996113025BX
99611302211
99611302212
996113022AX
99611302602
996113026AX
99611302603
99611302604
996113026BX
99611392101
996113921AX
99611392201
996113922AX

The product you are viewing cross references to these numbers
Best Price
Exhaust Manifold / Header with 200 CELL CAT for Porsche Boxster 987 / Cayman DesignTek
Code: 3606109874
Exhaust Manifold / Header

designtek

Fits:
Porsche 987 Boxster 2005- 08/2008
Porsche 987C Cayman 2006- 08/2008

DesignTek sports headers and 200 cell high flow cats 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.

Coating: 40g
Cells: 200cpsi

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.

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. 


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

3606109874
3606109874
98711310407
98711310408
98711310410
987113104AX
98711310805
987113108AX
98711310605
98711310606
987113106AX
98711310307
98711310310
987113103AX
98711310705
987113107AX
98711310505
98711310506
987113105AX

The product you are viewing cross references to these numbers
Best Product
Exhaust Manifold / Header with 200 CELL CAT for Porsche Boxster 987/ Cayman DesignTek
Code: 3606109872
Exhaust Manifold / Header with HJS equivalent CAT

designtek gb

Fits:
Porsche 987 Boxster 2005- 08/2008
Porsche 987C Cayman 2006- 08/2008

DesignTek sports headers and 200 cell HJS equivalent high flow cats 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.

Coating: 40g
Cells: 200cpsi
Manufactured in United Kingdom

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.

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. 


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

3606109872
98711310407
987113104AX
98711310408
98711310410
98711310805
987113108AX
98711310605
98711310606
987113106AX
98711310307
987113103AX
98711310310
98711310705
987113107AX
98711310505
98711310506
987113105AX

The product you are viewing cross references to these numbers
Best Product
Exhaust Manifold / Header with Catalyst Bypass for Porsche Boxster 987/ Cayman DesignTek
Code: 3606109875
Exhaust Manifold / Header with Cat Bypass

designtek

Fits:
Porsche 987 Boxster 2005- 08/2008
Porsche 987C Cayman 2006- 08/2008

Please note: This is a set of headers with catalyst bypass. After the installation of this product the emission light might come on your dash. To remove it you might need to install the lambda sensor extensions.

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. 

Please note:
On the video below customer has fitted our headers and sport silencer with secondary cat bypasses. The car on the video has no cats at all!



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

3606109875
3606109875
98711310407
98711310408
98711310410
987113104AX
98711310805
987113108AX
98711310605
98711310606
987113106AX
98711310307
98711310310
987113103AX
98711310705
987113107AX
98711310505
98711310506
987113105AX

The product you are viewing cross references to these numbers
Best Product
Exhaust manifold with catalytic converter OE. Porsche 987 Boxster / 987C Cayman
Code: 98711310
exchange
Exhaust manifold with catalytic converter. Reconditioned unit with deposit charge. Refundable on return of old unit.

porsche

Fits:
Porsche 987 Boxster 2007-08 M97.20 Engines
Porsche 987 Boxster S 2005-08 M97.21 / M97.22 Engines
Porsche 987C Cayman / Cayman S 2006-08 M97.21 / M97.22 Engines

Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Porsche Genuine Parts
Heatshield Locking Bolt 6x12. Porsche Boxster 986
Code: 99950800401
Heatshield Locking Bolt 6x12. EACH.

porsche

Fits:
Porsche Boxster 986


Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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99950800401
99950743009
99950800401

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Porsche Genuine Parts
Heatshield Locking Bolt washer. Porsche Boxster 986
Code: 90015100703
Heatshield Locking Bolt washer 7,4mm . EACH.

porsche

Fits:
Porsche Boxster 986

Click 'Zoom in' for large parts diagram.
Diagram ref no 26

Related reference numbers
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90015100703
90015100703
90015100702

The product you are viewing cross references to these numbers
Porsche Genuine Parts
Replacement Exhaust Catalytic Converter for Porsche Boxster 986 DesignTek
Code: 99611302
Standard Replacement Exhaust Catalytic Converter for Porsche Boxster 986 2.7L / 3.2L 400 Cell

designtek

PORSCHE BOXSTER 2.7L & 3.2L S Replacement Type Approved Petrol Cats made in grade 409 stainless steel. Recommend to change in a pair

Fits:
Porsche Boxster 986 2.7L / 3.2L

A catalytic converter is an emissions control device to stop harmful exhaust gasses from entering the atmosphere. In 1993, they became legality in the UK as part of the Euro Emissions standards. The aim of them is to improve air quality. As emissions standards have become more stringent the number of cats on a vehicle has increased. Many vehicles now have two or more to enable them to meet the Euro Emissions standards.

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

99611302
99611302111
996113021AX
99611302112
99611302502
996113025AX
99611302503
99611302504
996113025BX
99611302211
99611302212
996113022AX
99611302602
99611302603
996113026AX
99611302604
996113026BX

The product you are viewing cross references to these numbers
Best Product
Replacement Exhaust Catalytic Converter for Porsche Boxster 986 DesignTek
Code: 99611392
Standard Replacement Exhaust Catalytic Converter for Porsche Boxster 986 2.5L

designtek

PORSCHE BOXSTER 2.5L Replacement Cats made in grade 409 stainless steel. Recommend to change in a pair

Fits:
Porsche Boxster 986 2.5L

A catalytic converter is an emissions control device to stop harmful exhaust gasses from entering the atmosphere. In 1993, they became legality in the UK as part of the Euro Emissions standards. The aim of them is to improve air quality. As emissions standards have become more stringent the number of cats on a vehicle has increased. Many vehicles now have two or more to enable them to meet the Euro Emissions standards.

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

99611392
99611392101
99611392201
996113921AX
996113922AX

The product you are viewing cross references to these numbers
Best Product
Retaining Clip Speed Nut. Porsche Boxster 986
Code: 99950741308::1
Retaining Clip Speed Nut. EACH.

porsche

Fits:
Porsche Boxster 986

Click 'Zoom in' for large parts diagram.
Diagram ref no 25

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

99950741308
99611342200
99611342100
99950741308
99950741309

The product you are viewing cross references to these numbers
Porsche Genuine Parts
DISPLAYING 1 to 20 (of 20 products)
Also found on these pages
About Catalyst / Bypass

Title: Porsche Exhaust Catalyst and Bypass Sports Catalyst: Technical Specifications and Benefits

Key Points:

Enhanced Performance: Upgrading your Porsche's exhaust catalyst or opting for a bypass sports catalyst can significantly improve performance by increasing horsepower and torque output. These aftermarket options are designed to optimize exhaust flow, resulting in improved engine efficiency and throttle response.

Enhanced Sound: An original Porsche or aftermarket exhaust catalyst can enhance the auditory experience of your vehicle. They offer a deeper, more aggressive exhaust note, providing a sportier sound that complements the performance-oriented nature of a Porsche.

Compliance with Emissions Standards: When purchasing an exhaust catalyst, it is crucial to consider its compliance with local emissions regulations. Porsche exhaust catalysts are engineered to meet strict emissions standards, ensuring that your vehicle remains environmentally friendly while delivering enhanced performance.

Quality and Durability: Original Porsche exhaust catalysts are manufactured to the highest standards, ensuring exceptional quality and durability. Aftermarket options from reputable brands also offer similar reliability, providing a long-lasting solution for your Porsche's exhaust system.

Easy Installation: Both original Porsche and aftermarket exhaust catalysts are designed to be direct replacements, making installation relatively straightforward. However, it is essential to follow the manufacturer's instructions or seek professional assistance to ensure proper fitment and optimal performance.

At Design911, we understand the importance of finding the correct part for your Porsche and providing the best professional advice. Our dedicated team of experts specializes in Porsche parts and accessories, including exhaust catalysts. With our extensive knowledge and experience, we can assist you in finding the right exhaust catalyst or bypass sports catalyst for your Porsche model, taking into account your specific requirements and local regulations. We are committed to delivering top-quality products and ensuring customer satisfaction. Contact us today for personalized assistance and an enhanced driving experience with your Porsche.

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