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Exhaust Fitting Kits

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DISPLAYING 1 to 3 (of 3 products)
MANIFOLDKIT911E
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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 911 1965-83


EXHFITTING.911.1
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Mounting kit for heat exchanger.

oematch

Fits:
Porsche 911 E/S (mech. injection) 2.4ltr / 2.7ltr - 08/1971 to 07/1976
Porsche 911 T (not mech. injection) 2.0ltr / 2.4ltr - 01/1963 to 07/1973
Porsche 911 / 911S / 911 Carrera 2.7ltr - 08/1973 to 07/1975

Kit includes:
3 x heat exchanger gaskets
1 x rear silencer gasket
2 x M10 silencer bolt
2 x M10 silencer nut
3 x M8 heat exchanger nut
3 x M8 beat exchanger barrel nut
1 x M6 nut
1 x M6 washer, nuts & bolts



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Related, superseded, cross reference or alternative numbers for comparison.

EXHFITTING.911.1
90111119300
93011119001
9000760250C
90007602502
99908500103
99908500102
9000751480Y
99908400202
N 02214812
90002800801

The product you are viewing cross references to these numbers
91011KIT
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Product Information

Heat Exchanger Mounting Kit 

Ensure a secure and reliable installation of your air-cooled Porsche exhaust system with this OE Match Heat Exchanger Mounting Kit. This complete hardware kit contains the essential mounting components required when installing or replacing heat exchangers.

Porsche 911 1965-1968 2.0L / 912 SWB (F)
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Porsche 911 1974-1976 2.7L / 1976 3.0 Carrera

Heat exchangers are exposed to constant heat cycles, moisture, road salt and vibration, making the original mounting hardware highly susceptible to corrosion, seized fasteners and fatigue. Reusing old hardware can make installation difficult and may compromise the security and alignment of the exhaust system.

This OE Match mounting kit provides the correct replacement hardware to ensure your heat exchangers are securely fitted, helping maintain proper exhaust sealing, reduce unwanted movement and support long-term reliability. Whether you're replacing heat exchangers, rebuilding an engine or carrying out a full restoration, installing new mounting hardware is always recommended.

Manufactured to OE Match standards, every component is designed for precise fitment and dependable performance.

What Does the Heat Exchanger Mounting Kit Do?

The mounting kit provides the hardware required to securely fasten the heat exchangers to the engine and exhaust system.

Its primary functions include:

  • Securing the heat exchangers in the correct position.
  • Maintaining proper exhaust alignment.
  • Supporting effective exhaust sealing.
  • Preventing movement caused by vibration.
  • Providing reliable long-term fastening.
  • Simplifying heat exchanger installation.

Using new mounting hardware helps ensure the exhaust system performs correctly while reducing the likelihood of future maintenance issues.

Why Replace Heat Exchanger Mounting Hardware?

Original exhaust hardware is subjected to extreme operating conditions and often deteriorates over time.

Common reasons for replacement include:

  • Corroded nuts and fasteners.
  • Seized or damaged hardware.
  • Fatigued mounting components.
  • Broken or rounded fasteners during removal.
  • Exhaust restoration projects.
  • Engine rebuilds.
  • Heat exchanger replacement.
  • Preventative maintenance.

Replacing the complete mounting hardware during installation helps ensure a secure fit and reduces the risk of future exhaust problems.

Features

  • Designed for Porsche 911 (1963-1976).
  • Complete installation hardware set.
  • Precision manufactured for accurate fitment.
  • High-quality, durable components.
  • Helps ensure secure heat exchanger installation.
  • Restores factory-style mounting.
  • Ideal for restoration, repair and engine rebuilds.
  • Suitable for replacing worn or corroded original hardware.

Why Choose OE Match Exhaust Components?

OE Match exhaust components and installation hardware are manufactured to deliver factory-quality fitment, durability and long service life. Designed specifically for classic Porsche applications, these components help ensure reliable installation while preserving the originality and performance of your vehicle. Whether you're carrying out a complete restoration or routine maintenance, OE Match products provide the quality expected by Porsche enthusiasts and professional workshops.



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

91011KIT
91011KIT
91.011KIT

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 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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