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Catalyst / Bypass

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DISPLAYING 1 to 20 (of 20 products)
Exhaust kit for Porsche 993 in stainless steel
Code: EXHAUSTKIT75
Exhaust system made out of stainless steel.
Components:
- 100 Cell sport catalyst converters
- Sport silencers
- Tail pipe set

dansk

Fits:
Porsche 993 1995-98 (not Turbo)



Fitting kit not included in price and available separately.

Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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Related, superseded, cross reference or alternative numbers for comparison.

EXHAUSTKIT75
99322093300S
93.300S
99322093903S
93.903S
993PO93260S
PO93260S

The product you are viewing cross references to these numbers
About this kit
Kit
Exhaust Cat centre heat shield. Porsche 993 Turbo
Code: 99311324751
Exhaust Cat centre heat shield. Replacement centre heat shield for Cat.

porsche

Fits:
Porsche 993 Turbo 1994-98

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

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Related, superseded, cross reference or alternative numbers for comparison.

99311324751
99311324751

The product you are viewing cross references to these numbers
Porsche Genuine Parts
Exhaust Cat Heat shield Left. Porsche 993 Turbo
Code: 99311324351
Exhaust Cat Heat shield Left
porsche

Replacement heat sheild left for Cat.

Fits:
Porsche 993 Turbo 1994-98

Diagram Ref No 34
Porsche Genuine Parts
Exhaust Cat Heat shield Right. Porsche 993 Turbo
Code: 99311324451
Exhaust Cat Heat shield Right
porsche

Replacement heat sheild right for Cat.

Fits:
Porsche 993 Turbo 1994-98

Diagram Ref No 23
Porsche Genuine Parts
Exhaust cat heat shield. Porsche 993
Code: 99321121402
Exhaust cat heat shield
Replacement heat shield for Cat.

porsche

Fits:
Porsche 993 C2/4 1994-98 not turbo

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

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Related, superseded, cross reference or alternative numbers for comparison.

99321121402
99321121402

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Porsche Genuine Parts
Exhaust Catalytic Converter Bischoff Flanges for Porsche 993 DesignTek
Code: 99311321316/1
Exhaust Catalytic Converter BISCHOFF Flanges.

designtek

Standard Replacement Exhaust Catalytic Converter
Approved Petrol Cats made in grade T409 stainless steel.

Fits:
Porsche 993 C2 / C4 / C2S / C4S / RS 1994-98
Fits to BISCHOFF heat exchangers with gasket 93011119206


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.

99311321316
99311321316
99311321317
99311321316
99311321321

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Best Product
Exhaust Catalytic Converter Bypass Pipes for Porsche 993 DesignTek
Code: 360620993
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.

Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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
Best Product
Exhaust catalytic converter gillet flanges for Porsche 993
Code: 99311321343/1
Exhaust catalytic converter GILLET flanges.

designtek

Standard Replacement Exhaust Catalytic Converter
Approved Petrol Cats made in grade T409 stainless steel.

Fits:
Porsche 993 C2 / C4 / C2S / C4S / RS 1994-98
Fits GILLET heat exchangers with gasket 92811112702


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.

99311321343
99311321338
99311321343
99311321337
99311321334
99311321343
99311321344
99311321342

The product you are viewing cross references to these numbers
Best Product
Exhaust catalytic converter set. Porsche 993 C2 / 993 C4
Code: 993PO93260S
Exhaust catalytic converter set, Sport, 100 cells for Bischoff and Gillet exhaust system. Stainless steel, 

Polished.

dansk

Fits:
Porsche 993 / 993 4S 3.6-3.8 10/1993-09/1997

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: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001



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

993PO93260S
993PO93260S
1620300210
92.312S
PO-93260S
99311321316
99311321338
99311321343
99311321344

The product you are viewing cross references to these numbers
Best Price
Exhaust catalytic converter sport. Porsche 993
Code: 993PO93360S
Sport catalytic converter set - left and right.
Polished stainless steel. 100 Cell Cats - Bishoff/Gillet

dansk

Fits:
Porsche 993 Turbo / GT2 1994-98

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: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001



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

993PO93360S
PO-93360S
PO93360SX
1620300710
99311321357
99311321358
99311321458
99311321459

The product you are viewing cross references to these numbers
Best Price
Exhaust cross pipe. Porsche 993 *Bischoff
Code: 9930093400S
Cross Pipe set - left and right. Polished stainless steel.

dansk

Fits:
Porsche 993 C2 / C4 / C4S with "Bischoff" exhaust system replaces catalytic "Bischoff" converter.
Comes with Lambda sensor hole and plug.

Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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

9930093400S
93400S
93.400S
1620200110
99311321316
99311321317
99311321321

The product you are viewing cross references to these numbers
Best Price
Exhaust cross pipe. Porsche 993 *Gillet 9930093410S
Code: 9930093410S
Cross pipe set - left and right. Polished stainless steel.

danskmotorsport

Fits:
Porsche 993 C2 / C4 / C4S with "Gillet" exhaust system replaces catalytic "Gillet" converter.
Comes with Lambda sensor hole and plug.

Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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

9930093410S
93.410S
93410S
1620200210
99311321338
99311321337
99311321334

The product you are viewing cross references to these numbers
Best Price
Exhaust Muffler / Silencer RSR style headers. Porsche 993
Code: FSPOR993RSRWH
Fabspeed Header Muffler Kit WITH Heat Exchange

fabspeed

Fits : all Porsche 993 Carrera vehicles 1994-1998 - 3.6L / 3.8L and engines

Fabspeed's RSR Header Muffler Kit is a full exhaust system developed for track use provides an aggressive exhaust note while adding horsepower, torque, and throttle response; available as single or dual outlet and with or without heat exchange. Works great on street cars too. This Header/Muffler kit is built from the ground up to optimize performance for the Porsche 993 Carrera. Beyond just improving horsepower, torque, and throttle response, this package will also reduce the overall weight of your car by 43 pounds, which improves handling and acceleration.

SOUND:

This kit is designed specifically for use on the track, but works well for street drivers who want an aggressive and track-inspired exhaust note.

POWER:

We developed every inch of it to bring out the aggressive performance that the Carrera is capable of. On our dyno we saw gains of 29whp and 25ft/lbs of tq.

FEATURES:

• Loud and aggressive cup car sound
• 1.75" / 45mm Header tubes, 26" long
• This system can be ordered with single or double outlets
• Maintain your factory in-cabin heat with the optional heat exchange on the headers
• Saves 43lbs from the rear of the vehicle with heat exchange option, and saves 47lbs without heat exchange option
• Constructed from mandrel bent T304L stainless steel
• Simple DIY bolt-on installation, no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

NOTE:

This package can be purchased with a heat exchange on the headers that will help maintain the factory in-cabin heat. Without the exchange system, you'll save an additional 4 lbs, for a total of 47 pounds of weight reduction.

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.


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: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001



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

FSPOR993RSRWH
99311104510
99311104514
99311104511
99311104611
99311104614
99311104610
99311104613
99311321316
99311321338
99311321343
99311321344
99321103905
99321103907
99321103910
99321103911
99321104005
99321104007
99321104010
99321104011

The product you are viewing cross references to these numbers
Best Price
Exhaust sealing ring turbo to catalytic converter. Porsche 993 turbo
Code: 96511120500/1
Exhaust sealing ring turbo to catalytic converter. 
Price is for each

oematch

Fits:
Porsche 993 turbo - 1994 to 1997

Click 'Zoom in' for large parts diagram.
Diagram ref no 3



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

96511120500
96411120500

The product you are viewing cross references to these numbers
Best Product
Exhaust Sport Cat X- Pipe. Porsche 993 Turbo
Code: FSPOR993TSCX
Exhaust Sport Cat X- Pipe.
High performance free-flowing X-Pipe replaces the heavy and restrictive factory muffler for improved power and sound.

fabspeed

Please note:
This product is currently undergoing a design update and will be available for purchase soon. Please contact us for details.


FEATURES:
Fits all Porsche 993 Turbo / Turbo S vehicles (1995-1998)
• Improves power and throttle response
• Saves 8 lbs from the rear of the vehicle
• Constructed from high-quality 14-16 gauge C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacement for restrictive factory muffler
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty

NOTE: Fabspeed's 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California

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: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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

FSPOR993TSCX
99311321357
99311221358
99311321359
99311321457
99311321458
99311321459

The product you are viewing cross references to these numbers
Best Price
Exhaust Sports Cats or Cat Bypass System "Bischoff" Porsche 993
Code: FSPOR993
Exhaust Sports Cats or Cat Bypass System BISCHOFF Porsche 993

fabspeed

Composite gaskets included.

+8HP and significantly more torque.

Saves 11lbs/5kg over stock catalytic converters.

This new modular system includes a 200 cell German imported sport catalytic converter and cat bypass option in one interchangeable system.

993 Sport Catalytic Converter X-Pipe is different for certain years. 1994-1996 1/2 993's and all 993 SUPERCUP cars (1994 to 1997 993CUP) have Bischoff oval 3 bolt flanges. 1996+1998 993's are all Gillett round 3 bolt flanges. YOU MUST CORRECTLY specify flange type when Ordering.

When in doubt go check especially the late 1995 and early 1996 cars as this was a "cross-over year" and flange style changed during the year.

T304 Stainless steel C.N.C mandrel bent with polished show car mirror shine.

Simple and easy Bolt-on and bolt-off when you need to!.
Best PROVEN performance value on the market.

Might require blanking plug (90012300920) and washer (90021901500). Available separately.

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: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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

FSPOR993
99311321316

The product you are viewing cross references to these numbers
Best Price
Exhaust Sports Cats or Cat Bypass System "Gillet" Porsche 993
Code: FSPOR993
Exhaust Sports Cats or Cat Bypass System GILLET Porsche 993

fabspeed

Composite gaskets included.

+8HP and significantly more torque.

Saves 11lbs/5kg over stock catalytic converters.

This new modular system includes a 200 cell German imported sport catalytic converter and cat bypass option in one interchangeable system.

993 Sport Catalytic Converter X-Pipe is different for certain years. 1994-1996 1/2 993's and all 993 SUPERCUP cars (1994 to 1997 993CUP) have Bischoff oval 3 bolt flanges. 1996+1998 993's are all Gillett round 3 bolt flanges. YOU MUST CORRECTLY specify flange type when Ordering.

When in doubt go check especially the late 1995 and early 1996 cars as this was a "cross-over year" and flange style changed during the year.

T304 Stainless steel C.N.C mandrel bent with polished show car mirror shine.

Simple and easy Bolt-on and bolt-off when you need to!.
Best PROVEN performance value on the market.

Might require blanking plug (90012300920) and washer (90021901500). Available separately.

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: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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

FSPOR993
99311323138
99311321343
99311321344

The product you are viewing cross references to these numbers
Best Price
Lambda Sensor Blanking Plug and Receiver Socket. Porsche 996 / 997
Code: 100390100392
Lambda Sensor Blanking Plug and Receiver Socket Set.
In case you need to relocate your existing lambda probe because it's not in the right location. Welding and cutting specialist required.


Fits:
Many Porsche vehicles. Universal kit.

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

100390100392
100390
100392

The product you are viewing cross references to these numbers
Best Price
Modular cat bypass x-pipe Competition ONLY. Porsche 993 Turbo
Code: FSPOR993TCBX
Fabspeed Modular cat bypass x-pipe Competition ONLY.

fabspeed

Replaces the restrictive factory catalytic converters with much less restrictive straight-through pipes for maximum flow and performance.

FEATURES:

Fits all Porsche 993 Turbo / Turbo S vehicles worldwide (1995-1998)
• Fabspeed's Primary Catbypass Pipes replace the restrictive factory catalytic converters with much less restrictive straight-through pipes for maximum flow and performance.
• Noticeable increase in power and improved throttle response
• Saves 12 lbs from the rear of the vehicle
• Adds an aggressive exhaust note for exotic high-performance sound
• Direct bolt-on replacement for the heavy factory catalytic converters on the 993 Turbo
• Constructed from polished T304L stainless steel
• Optional 02 spacers available to help prevent triggering the Check Engine Light
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

DISCLAIMER: This product removes the OEM intake filter system from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product contains a High-Flow Air Filter solely intended for track and race cars as it is NOT California Air Resources Board Certified (CARB) and not EPA certified. You are hereby informed and warned to check your local, state, and federal laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only, never to be driven on public roads. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified (CARB) and not EPA certified. You are hereby informed and warned to check your local, state, and federal laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

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: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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

FSPOR993TCBX
99311321357
99311221358
99311321359
99311321457
99311321458
99311321459

The product you are viewing cross references to these numbers
Best Price
Sport catalytic converter bypass pipes. Porsche 993 Turbo 1995-97
Code: 993PO93360SX
Sport catalytic converter bypass pipes.

dansk

Fits:
Porsche 993 Turbo 1995-97

Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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

993PO93360SX
1620300610
PO-93360SX
99311321357
99311321358
99311321359
99311321457
99311321458
99311321459

The product you are viewing cross references to these numbers
Best Price
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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