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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

Exhaust Fitting Kits

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DISPLAYING 1 to 9 (of 9 products)
FITTINGKIT08
Product Information
Product Information
Manifold fitting kit.

Contains all necessary gaskets, nuts & bolts.

Fits:
Porsche 997 Carrera 3.6L
Porsche 997 Carrera 3.8L
EXHAUSTMKIT
Product Information
Product Information

Exhaust silencer brackets mounting kit. (12 Parts ) Porsche 996 / 997 / 997.2, 

This 12pcs exhaust bracket mounting kit contains the essential parts when replacing the rear exhaust boxes, the parts will help when mounting the large mounting brackets. , please note we would also recommend that you replace the 8 x Exhaust vibration dampener for silencer bracket.  Ref  997.111.229.30

This kit includes the following parts: 

  • 2 x Silencer bracket sleeve for long bolt.  Ref  996.111.230.00
  • 2 x Silencer Bracket Sleeve for Short Bolt.  Ref 996.111.231.00
  • 2 x Exhaust hexagon head bolt (SHORT).   Ref 900.378.105.01
  • 2 x Exhaust hexagon head bolt (LONG).   Ref 900.378.183.01
  • 4 x Exhaust hexagon nut.  Ref 900.380.005.01


Fits:

  • 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 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  

contains items 16, 24, 25, 35, 36 



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Related, superseded, cross reference or alternative numbers for comparison.

EXHAUSTMKIT
99611123000
90037810501
90037818301
99611123100
90038000501

The product you are viewing cross references to these numbers
EXHAUSTMKIT1
Product Information
Product Information

Exhaust silencer brackets mounting kit. (20 Parts ) Porsche 996 / 997 / 997.2, 

This 20pcs exhaust bracket mounting kit contains the essential parts when replacing the rear exhaust boxes, the parts will help when mounting the large mounting brackets. 

This kit includes the following parts: 

  • 8 x Exhaust vibration dampener for silencer bracket.  Ref  997.111.229.30
  • 2 x Silencer bracket sleeve for long bolt.  Ref  996.111.230.00
  • 2 x Silencer Bracket Sleeve for Short Bolt.  Ref 996.111.231.00
  • 2 x Exhaust hexagon head bolt (SHORT).   Ref 900.378.105.01
  • 2 x Exhaust hexagon head bolt (LONG).   Ref 900.378.183.01
  • 4 x Exhaust hexagon nut.  Ref 900.380.005.01

Fits:

  • 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 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  

contains items 16, 24, 25, 34, 35, 36 



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

EXHAUSTMKIT1
99711122930
99611123000
90037810501
90037818301
99611123100
90038000501

The product you are viewing cross references to these numbers
99711122930/1KIT
Product Information
Product Information

Exhaust support bracket sound absorber. (SET OF 4) Porsche 996 / 997  99711122930

4 pcs required per exhaust box bracket (8pcs or 2 sets required per car) 

oematch

Fits:

  • Porsche 996 C2 / C4 
  • Porsche 997 C2 / C4 




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

99711122930
99711122930
99611122702
99611122802
99611122703
99611122803

The product you are viewing cross references to these numbers
97270KIT/1
Product Information
Product Information
Mounting Kit for Catalytic Converter Pipes. Porsche 997 / 997S

oematch

Fits:
Porsche 997 3.6ltr / 997 S 3.8ltr - 2005 to 2008

Kit includes:
2x Pipe Connector, 55x58.5x75mm, stainless steel
2x Gasket
6x Bolt, M8x30.0mm
6x Lock nut, M8x1.25



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

97270KIT
99711152000
99711111300
99908405202
N01024426

The product you are viewing cross references to these numbers
FITTINGKIT29
Product Information
Product Information
Mounting Kit rear exhaust silencer. 

oematch

Fits:
Porsche 997.1 Carrera 2 / Carrera  4 3.6ltr - 2005 to 2008
Porsche 997.1 Carrera 2S / Carrera 4S 3.8ltr -
 2005 to 2008 

Included in kit:
2 x Pipe Connector, 55x58.5x75mm, stainless steel
2 x Bolt, M8x1.25x140mm
2 x Bolt, M8x1.25x70mm
4 x Lock nut, M8x1.25



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

FITTINGKIT29
99711152000
90037818301
90037810501
90038000501

The product you are viewing cross references to these numbers
Special Offer
SR067
Product Information
Product Information
Exhaust bolt repair kit for Boxster / 996 / 997 Carrera & Cayman Gen1 1997- 2009 (Not GT3, GT2 or TT engines)

stomski

With more and more broken exhaust bolts reported on the water-cooled engines, the headache of repairing a broken bolt is becoming epidemic. Tasks ranging from a simple exhaust system update through an engine removal, are consistently plagued by snapped, rusted, and broken exhaust manifold bolts. Rarely can an accurate removal of the broken bolt be performed with the engine in the car, and even after removal, the task is time consuming and if not done carefully can lead to a damaged head or faulty repair. STOMSKI RACING's answer to these problems is the SR067, a kit that easily, accurately, and flexibly allows you to drill out the broken bolts - with the engine still in the car- saving time and headaches. A CNC milled plate indexes precisely off the broken bolts and/or bolt holes. Using our uniquely designed Thumb Screws, the SR067 plate is locked in place (by threading a Thumb Screw over a broken bolt or by using a supplied bolt threaded through the SR067 Thumb Screw). With the included pilot drills and drill guides, the faulty bolt can be drilled out, producing a perfectly perpendicular and centered hole that if necessary can be chased with an included M8x1.25 tap.

Kit includes : anodized aluminum fixture, drill bits, tap with extension, drill jigs/guides, Thumb Screws, and hardware in a sturdy storage case.

Now also includes our SR065D drill guide.
Special Offer
97270KIT
Product Information
Product Information
Mounting Kit for Catalytic Pipes.

oematch

Fits:
Porsche 997/997S 3.6L-3.8L 2005-08

Kit included:
2x Pipe Connector, 55x58.5x75mm, stainless steel
2x Gasket
6x Bolt, M8x30.0mm
6x Lock nut, M8x1.25

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

97270KIT
97.270KIT
97270KIT

The product you are viewing cross references to these numbers
Special Offer
97330KIT
Product Information
Product Information
Mounting Kit for Rear Exhaust

oematch

Fits:
Porsche 997 3.6L-3.8L 2005-08 (not Turbo/GT2)

Kit included:
2x Pipe Connector, 55x58.5x75mm, stainless steel
2x Bolt, M8x1.25x140mm
2x Bolt, M8x1.25x70mm
4x Lock nut, M8x1.25
DISPLAYING 1 to 9 (of 9 products)
Also found on these pages
About Exhaust Fitting Kits

Exhaust Fitting Kits for Porsche | Complete Installation & Repair Solutions

The exhaust fitting kit is an essential component of any exhaust installation, replacement, or upgrade. It ensures that all joints, clamps, seals, and brackets in your Porsche’s exhaust system are correctly aligned and securely fastened, preventing leaks and maintaining proper exhaust flow.

At Design911, we supply a wide range of exhaust fitting kits designed to match Porsche exhaust systems with manufacturer-level accuracy. Each kit includes high-quality gaskets, clamps, bolts, nuts, seals, and mounting hardware, ensuring a professional, leak-free fit — whether you’re restoring a classic 911 or maintaining a modern performance model.

Our fitting kits are manufactured to exact tolerances from corrosion-resistant materials, guaranteeing a long-lasting seal and reliable performance under high-temperature, high-pressure conditions.

What Do Exhaust Fitting Kits Do?

An exhaust fitting kit provides the components required to properly install, secure, or replace sections of your Porsche’s exhaust system. These parts ensure stability, prevent vibration, and maintain airtight joints for optimum exhaust efficiency.

Core Functions:

  • Seals exhaust joints to prevent gas leaks and noise.
  • Secures exhaust components such as pipes, silencers, and catalytic converters.
  • Reduces vibration and movement caused by engine motion.
  • Ensures proper exhaust alignment for optimal flow and pressure balance.
  • Maintains performance and compliance with emissions standards.

Using a dedicated Porsche exhaust fitting kit ensures your system functions exactly as intended — improving both performance and reliability.

Why Do Exhaust Fitting Components Fail?

Due to constant exposure to heat, vibration, and corrosive exhaust gases, fitting components are prone to wear over time.

Common Causes of Failure Include:

  • Rust and corrosion from road salt or moisture.
  • Thermal fatigue from repeated heating and cooling cycles.
  • Loose fittings causing leaks or rattles.
  • Worn seals or gaskets leading to reduced exhaust pressure.
  • Cracked or weakened clamps and bolts from prolonged vibration.

A failing fitting kit can lead to loud exhaust noise, loss of performance, emission leaks, or even component misalignment. Replacing these parts is essential for safety, efficiency, and sound quality.

Why Replace or Upgrade Your Exhaust Fitting Kit?

Replacing old or damaged fitting components with precision-engineered replacements ensures your Porsche’s exhaust system performs at its best.

Key Benefits:

  • Restores proper exhaust sealing and flow.
  • Reduces exhaust leaks and unwanted noise.
  • Improves durability and vibration resistance.
  • Crafted from high-grade stainless steel and heat-resistant materials.
  • Compatible with standard and performance exhaust systems.
  • Direct-fit design for Porsche 911, Cayman, Boxster, Panamera, Macan and more.

Whether installing a new exhaust system or carrying out maintenance, using a complete fitting kit guarantees a professional finish and long-lasting results.

Highlights:

  • Complete exhaust fitting kits for Porsche models.
  • Includes clamps, bolts, gaskets, and seals for perfect alignment.
  • Designed for precision fitment and long-term reliability.
  • Prevents leaks and optimises exhaust pressure balance.
  • Ideal for exhaust upgrades, repairs, and restorations.
  • Manufactured from corrosion- and heat-resistant materials.

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