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Exhaust Fitting Kits
By OE Match
- 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
OEMatch Exhaust Fitting Kits — Flow, Response, Refinement
OEMatch supplies exhaust fitting kits for Porsche models that gather the seals, clamps, fixings and mounting hardware needed for installation, repair or restoration. Many owners search for genuine or OEM exhaust components; these kits are direct-fit alternatives designed to match the original form, fit and function and simplify a thorough, leak-free finish.
Available Types- Gaskets and seals for flanges and manifolds
- Band clamps, V-clamps and exhaust clips
- Bolts, nuts, studs and washers in exhaust grades
- Mounting brackets, hangers and insulators
- Heat shields and vibration dampers
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original exhaust fitting kits.
OE (Original Equipment) refers to parts matching original specifications for the exhaust fitting kits and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM exhaust fitting kits engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
These kits collect the small but essential items that keep an exhaust system gas-tight and correctly supported. Components are chosen to resist heat and corrosion, and to suit the mounting points and clearances used on Porsche exhaust systems so installation restores correct alignment and reduces vibration.
Benefits Include- Restores airtight joints to prevent exhaust leaks and noise
- Reduces vibration and movement that can cause fatigue or damage
- Simplifies installation by providing compatible fixings in one set
- Rust and corrosion from moisture or road salt
- Thermal fatigue from repeated heating and cooling cycles
- Loose or damaged fastenings allowing leaks or rattles
- Degraded seals or gaskets losing their sealing properties
Replacing degraded fitting components maintains exhaust integrity, reduces unwanted noise and helps preserve emissions and back-pressure characteristics. Using a complete kit avoids missing fasteners at assembly, minimises repeat disassembly and supports a professional repair or upgrade for Porsche models, whether for routine maintenance or restoration projects.
Advantages- Items selected for Porsche applications to match common mounting arrangements
- Materials chosen to resist heat and corrosion for longer service life
- Comprehensive kits reduce the chance of missing parts during installation
