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Exhaust Fitting Kits
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Mounting kit for heat exchanger.

Fits:
Porsche 911 Carrera 3.2ltr - 1984 to 1989
Porsche 911 turbo (930 turbo) 3.3ltr 1984 to 1989
Kit includes:
1 x Large gasket for mounting heat exchanger to intermediate tube
3 x Gasket for heat exchanger to cylinder head. 3 pcs. required for each heat exchanger
3 x Bolt, M8x1.25x40mm
3 x Nut M8x1.25, for mounting heat exchanger to cylinder head
3 x Lock nut, M8x1.25
3 x Nut, M8x1.25
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
EXHFITTING.911.2
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Mounting Kit for one Heat Exchanger
2 required per car
Restore the integrity of your Porsche Turbo exhaust system
with this OE Match Heat Exchanger Mounting Kit, designed specifically
for selected Porsche 911 Turbo models. Manufactured to original
equipment specifications, this complete fitting kit provides the essential
hardware required to securely mount the heat exchangers, ensuring correct
alignment, reliable sealing and long-term durability under the extreme operating
temperatures produced by the turbocharged flat-six engine.
Fits:
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Kit included:
1x Large gasket for mounting heat exchanger to intermediate tube
3x Gasket for heat exchanger to cylinder head. 3 pcs. required for each heat exchanger
3x Bolt, M8x1.25x40mm
3x Nut M8x1.25, for mounting heat exchanger to cylinder head
3x Lock nut, M8x1.25
3x Nut, M8x1.25
Whether you're replacing worn heat exchangers, installing a new exhaust system or carrying out a full restoration, using new mounting hardware helps guarantee a secure installation while protecting valuable exhaust components from vibration and premature wear.
What Does the Heat Exchanger Mounting Kit Do?
The heat exchanger mounting kit secures the heat exchangers firmly to the engine and exhaust system while allowing for normal thermal expansion during operation.
Its primary functions include:
- Securing the heat exchangers to the engine.
- Maintaining correct exhaust system alignment.
- Supporting efficient cabin heating performance.
- Reducing vibration and unwanted movement.
- Helping maintain an effective exhaust gas seal.
- Preventing unnecessary stress on exhaust studs and flanges.
Correct mounting hardware is essential for the safe and reliable operation of both the exhaust and heating systems on the Porsche 911 Turbo.
Why Do Heat Exchanger Mounting Kits Fail?
Turbocharged engines generate significantly higher exhaust
temperatures than naturally aspirated models, placing additional stress on
mounting hardware. Common causes of failure include:
- Corrosion caused by moisture and road salt.
- Extreme heat cycles weakening fasteners.
- Seized or damaged nuts and bolts.
- Exhaust vibration causing fatigue over time.
- Damaged fixings during exhaust removal.
- Age-related deterioration after decades of service.
As the hardware deteriorates, heat exchangers can become loose, resulting in exhaust leaks, rattles, vibration and increased stress on surrounding exhaust components.
When Should the Heat Exchanger Mounting Kit Be Replaced?
The mounting kit should always be inspected whenever the
heat exchangers or exhaust system are removed. Replacement is recommended if
you notice:
- Rusted or seized fasteners.
- Broken or stretched hardware.
- Loose heat exchangers.
- Exhaust leaks around the mounting flanges.
- Excessive vibration or rattling.
- Damaged washers, locking plates or mounting hardware.
Many Porsche specialists recommend fitting a new mounting kit whenever replacing heat exchangers or carrying out major exhaust work to ensure reliable installation and avoid reusing weakened or corroded hardware.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91103KIT
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Mounting Kit for one Heat Exchanger
2 required per car
Restore the security and reliability of your Porsche exhaust
system with this OE Match Heat Exchanger Mounting Kit, designed
specifically for the Porsche 911 3.2 Carrera (1984–1989) and the 930 turbo (1984-1989). Manufactured
to original equipment specifications, this comprehensive fitting kit contains
the essential hardware required to securely install the heat exchangers,
ensuring correct alignment, reliable sealing and long-lasting durability.
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Kit included:
1x Large gasket for mounting heat exchanger to intermediate tube
3x Gasket for heat exchanger to cylinder head. 3 pcs. required for each heat exchanger
3x Bolt, M8x1.25x40mm
3x Nut M8x1.25, for mounting heat exchanger to cylinder head
3x Lock nut, M8x1.25, cu. Plated
3x Nut, M8x1.25
Whether you're replacing tired heat exchangers, installing a new exhaust system or carrying out a concours-quality restoration, fitting new mounting hardware ensures every component is correctly secured while reducing the risk of vibration, exhaust leaks and premature hardware failure.
What Does the Heat Exchanger Mounting Kit Do?
The heat exchanger mounting kit provides the fixings needed
to attach the heat exchangers securely to the engine and exhaust system. It
plays an important role by:
- Securing the heat exchangers to the engine.
- Maintaining correct exhaust alignment.
- Supporting efficient cabin heating performance.
- Reducing vibration and unwanted movement.
- Helping maintain leak-free exhaust joints.
- Allowing for normal expansion and contraction as exhaust temperatures change.
Correct mounting hardware is essential for maintaining both exhaust efficiency and the performance of the Porsche heating system.
Why Do Heat Exchanger Mounting Kits Fail?
The mounting hardware operates in an extremely demanding
environment, exposed to continuous heat, moisture and vibration. Over time,
components can fail due to:
- Corrosion caused by road salt and moisture.
- Heat cycles weakening fasteners.
- Rusted or seized nuts and bolts.
- Fatigue caused by engine vibration.
- Damage during previous exhaust repairs.
- Age-related deterioration after decades of service.
As the hardware deteriorates, the heat exchangers can loosen, resulting in exhaust leaks, rattles, poor alignment and additional stress on surrounding components.
When Should the Heat Exchanger Mounting Kit Be Replaced?
The mounting hardware should be inspected whenever the
exhaust or heat exchangers are removed. Replacement is recommended if you
notice:
Rusted
or seized fasteners.
Most Porsche specialists recommend fitting a new mounting kit whenever new heat exchangers are installed, ensuring reliable installation and avoiding the reuse of weakened or corroded fixings.
-
exhaust system 911 TURBO 930.60/66 1978-83 202-10
-
replacement transmission, transmission case SPM - G 925/16 - 911 1978-83 308-00
-
NIPPONDENSO compressor mounting and driving mechanism 911 TURBO 1978-83 813-35
-
battery, fuse box 911 1978-83 902-00
-
exhaust system 911 TURBO 930.66/68 1987-89 202-10
-
exhaust system 911 TURBO 930.66/68 1987-89 202-15
-
Throttle linkage bracket 911 1984-86 107-12
-
Exhaust system 911 TURBO 1984-86 202-10
-
Exhaust system 911 TURBO 1984-86 202-15
-
compressor mounting driving mechanism 911 1987-89 813-20
-
battery, starter, generator 911 1987-89 902-05
-
Compressor mounting and driving mechanism 911 1984-86 813-20
-
battery, starter, generator 911 1984-86 902-05
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.