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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://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram

Exhaust Fitting Kits

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DISPLAYING 1 to 6 (of 6 products)
MANIFOLDKIT964
Product Information
Product Information

Exhaust heat exchanger fitting kit. Includes studs and nuts made out of titanium.

These titanium components are resistant to rust and corrosion, which can be a common issue with traditional steel studs and nuts. This corrosion resistance ensures that the studs and nuts maintain their integrity, allowing for easy removal and installation when necessary. They are the perfect upgrade for Porsche enthusiasts who demand the ease of access to vehicle's exhaust system.

rohler

Fits:
Porsche 964


FITTINGKIT19
Product Information
Product Information
Mounting kit for complete exhaust system with standard centre and final mufflers

Fits:
Porsche 964 C2/ C4 1989-93

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Related, superseded, cross reference or alternative numbers for comparison.

FITTINGKIT19
99311119500
99908500102
90007428202
99908405202
96411119800
96411119205
96411124702
99902512501
96411111902
96411133600
90007431101
90022300102
99908409502
90007507803
90002500703
90015100603
90007535400
99950707300

The product you are viewing cross references to these numbers
FITTINGKIT20
Product Information
Product Information
Mounting kit for complete exhaust system with standard centre muffler and g-pipe replacement for final mufflers

Fits:
Porsche 964 C2/ C4 1989-93

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Related, superseded, cross reference or alternative numbers for comparison.

FITTINGKIT20
99311119500
99908500102
90007428202
99908405202
96411119800
96411119205
96411124702
99902512501
96411111902
96411133600
90007431101
90022300102
99908409502
90007507803
90002500703
90015100603
90007535400
99950707300

The product you are viewing cross references to these numbers
FITTINGKIT21
Product Information
Product Information
Mounting kit for complete exhaust system with race pipe and g-pipe replacement for final muffler

Fits:
Porsche 964 C2/ C4 1989-93

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Related, superseded, cross reference or alternative numbers for comparison.

FITTINGKIT21
99311119500
99908500102
90007428202
99908405202
96411119800
96411119205
96411124702
99902512501
96411111902
96411133600
90007431101
90022300102
99908409502
90007507803
90002500703
90015100603
90007535400
99950707300

The product you are viewing cross references to these numbers
FITTINGKIT22
Product Information
Product Information
Mounting kit for complete exhaust system with race pipe and standard final muffler

Fits:
Porsche 964 C2/ C4 1989-93

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

FITTINGKIT22
99311119500
99908500102
90007428202
99908405202
96411119800
96411119205
96411124702
99902512501
96411111902
96411133600
90007431101
90022300102
99908409502
90007507803
90002500703
90015100603
90007535400
99950707300

The product you are viewing cross references to these numbers
FITTINGKIT18
Product Information
Product Information
Mounting kit for heat exchangers.

Fits:
Porsche 964 C2 / C4 1989-93

Diagram ref no: 3, 4, 5, , 7, 8 and 12.

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

FITTINGKIT18
99311119500
99908500102
90007428202
99908405202
96411119800
96411119205

The product you are viewing cross references to these numbers
DISPLAYING 1 to 6 (of 6 products)
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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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