Exhaust Fitting Kits

Exhaust adaptor. To be used when installing 3.6L 964/993 engine into G-model cars and still using "banana" style exhaust boxes.

Fits:
Porsche 911 G model with 3.6 L engine 2.7-3.2L 08/1973-07/1989

Related reference numbers
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1620650200

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Heat exchanger mounting kit.

Fits:
Porsche 911 1974-84

*If using with 1985 onwards 3.2L you may need 6x 93011119112 42mm bore Manifold gaskets

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PCG91121100

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Mounting Kit For Exhaust.

The Porsche Exhaust Mounting Kit – OE Match (Part Number: PCG91121100/1) is a replacement fitting and fastening kit designed to securely install and support the exhaust heat exchangers on selected classic Porsche 911 models.

Fits:

• Porsche 911 2.7L / 3.0L / *3.2L 08/73-07/85

*If used with 1984 onwards 3.2L you may need 6x 93011119112/1 42mm bore Manifold gaskets 

Designed as an alternative to the original Porsche exhaust mounting kit, this OE Match replacement provides the necessary mounting hardware for correctly securing compatible exhaust components, helping maintain a stable installation and reliable sealing at the exhaust connections.

The exhaust mounting system operates in an extremely demanding environment, exposed to high temperatures, constant engine vibration, moisture and road contamination. Over time, original mounting bolts, nuts, studs and other fastening components can become corroded, weakened, seized or damaged during exhaust removal.

Replacing worn or deteriorated exhaust mounting hardware helps maintain secure exhaust connections, minimise unwanted vibration and reduce the likelihood of exhaust gas leaks.

Ideal for exhaust system repairs, heat exchanger replacement, engine maintenance and classic Porsche restoration projects, this OE Match mounting kit offers a practical and cost-effective alternative to Genuine Porsche-branded mounting hardware.

What This Product Does:
The exhaust mounting kit provides the fastening components required to securely attach compatible exhaust heat exchangers and associated exhaust components to the engine.

Correctly installed exhaust mounting hardware maintains the clamping force required for secure connections and effective sealing between the exhaust components and the cylinder heads.

Its main functions include:

• Securing exhaust components: Provides the mounting hardware needed to correctly fasten heat exchangers and associated exhaust fittings.
• Maintaining exhaust joint sealing: Helps apply consistent clamping pressure to the exhaust gaskets, reducing the risk of exhaust gas leakage.
• Supporting exhaust system stability: Keeps exhaust components correctly positioned during engine operation.
• Reducing vibration and rattling: Helps prevent unwanted movement caused by loose or deteriorated fasteners.
• Withstanding high operating temperatures: Provides mounting hardware suitable for the demanding thermal conditions surrounding the exhaust system.
• Supporting reliable exhaust performance: Maintains secure exhaust connections for effective exhaust gas flow.
• Facilitating exhaust repairs: Provides replacement fastening components during heat exchanger installation, exhaust maintenance or engine restoration.

Symptoms Of Wear Or Failure:
Exhaust mounting hardware is continually subjected to extreme temperatures, repeated heating and cooling cycles, engine vibration and exposure to moisture. These conditions can cause corrosion, metal fatigue, loosening or seizure over time.

Common signs of worn or damaged exhaust mounting components include:

• Corroded or rusted fasteners: Exhaust mounting nuts, bolts and studs may become heavily corroded, reducing their strength and making removal difficult.
• Loose exhaust components: Deteriorated or incorrectly tightened hardware may allow movement around the heat exchanger or exhaust connections.
• Exhaust gas leaks: Damaged or loose fasteners can reduce gasket clamping pressure, allowing exhaust gases to escape from the joints.
• Increased exhaust noise: Leaking exhaust connections may produce ticking, blowing or hissing sounds, particularly during acceleration or when the engine is cold.
• Rattling or vibration: Loose mounting components may allow the exhaust system to vibrate excessively, producing unwanted metallic noises.
• Broken or missing mounting hardware: Heat exposure, corrosion or mechanical stress may cause mounting studs or bolts to fracture.
• Exhaust fumes or unusual odours: Leaking exhaust joints may allow exhaust gases to escape into the surrounding engine area.
• Difficulty removing exhaust components: Severely corroded or seized mounting hardware may complicate routine servicing and heat exchanger replacement.

Why Replacement Matters:
Replacing deteriorated exhaust mounting hardware is important for maintaining the structural integrity, sealing performance and long-term reliability of the Porsche 911 exhaust system.

Old or corroded mounting components may no longer provide the correct clamping force required to keep exhaust connections secure. This can result in exhaust gas leaks, excessive vibration, rattling and potential damage to surrounding components.

Severely corroded hardware may also break during removal, making future exhaust repairs more difficult and time-consuming.

Installing a replacement OE Match Exhaust Mounting Kit helps to:

• Restore secure exhaust installation: Ensure compatible heat exchangers and exhaust components are correctly fastened.
• Help prevent exhaust leaks: Maintain appropriate gasket clamping pressure for reliable sealing.
• Reduce unwanted vibration: Minimise rattling and movement caused by loose or weakened mounting hardware.
• Improve exhaust system reliability: Replace aged, corroded or damaged fasteners before they cause further problems.
• Support safe vehicle operation: Help reduce the risk of exhaust gases escaping through poorly secured connections.
• Simplify exhaust maintenance: Provide replacement mounting hardware when removing and refitting heat exchangers.
• Protect surrounding components: Reduce the risk of excessive movement or stress on adjacent exhaust components.
• Support classic Porsche restoration: Restore the intended exhaust mounting arrangement during engine rebuilding or vehicle refurbishment.
• Offer a cost-effective repair: Provide an OE Match alternative to the Genuine Porsche mounting kit.

Replacing exhaust mounting hardware during heat exchanger replacement or major exhaust servicing is recommended, particularly when existing fasteners show signs of corrosion, damage or deterioration.

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

PCG91121100

The product you are viewing cross references to these numbers

Mounting Kit.
The OE Match Mounting Kit is a high-quality installation hardware kit designed to provide the essential fasteners and fittings required for the secure installation or replacement of compatible Porsche components. Manufactured to OE specifications for fit, strength and durability, this kit contains premium-quality mounting hardware to ensure reliable assembly, correct alignment and long-lasting performance.  

Fits:
Porsche 911 SC/911 Carrera 2.7L-3.0L 08/1975-07/1983
Porsche 930 (not turbo) 2.7L-3.0L 08/1975-07/1983

Kit Includes:
3x Exhaust metal band
3x Lock nut, M8x1.25mm, cu. plated
3x Bolt, M8x12.5x40mm
1x Gasket for rear exhaust to intermediate exhaust

Produced from high-strength, corrosion-resistant materials, the components are engineered to withstand vibration, mechanical loads and harsh environmental conditions. Whether used during repairs, maintenance or restoration work, the mounting kit helps ensure professional-quality installation while replacing worn, damaged or corroded original hardware.  

What This Product Does:

• Provides the essential hardware required for component installation.
• Secures replacement parts safely and correctly.
• Maintains proper alignment of installed components.
• Replaces worn, corroded or damaged original fixings.
• Helps reduce vibration and component movement.
• Supports reliable long-term installation.
• Simplifies repair and maintenance work.
• Forms an essential part of a professional component replacement.

Symptoms Of Wear Or Failure:

• Loose or misaligned components.
• Excessive vibration or rattling.
• Corroded, seized or broken fasteners.
• Missing mounting hardware.
• Difficulty tightening or securing components.
• Damaged or stripped threads.
• Premature wear caused by component movement.
• Increased noise from loosely mounted parts.
• Visible corrosion or deterioration of fixings.
• Reduced reliability of installed components.

Why Replacement Matters:

• Mounting hardware is continually exposed to vibration, moisture, road salt, heat and mechanical stress. Over time, fasteners can corrode, stretch, seize or lose their clamping force, reducing their ability to secure components correctly.
• Reusing old or damaged hardware can lead to poor fitment, unwanted movement, increased vibration and premature wear of replacement parts. In some cases, weakened fixings may fail completely, affecting the reliability and safety of the installed component.
• Replacing the mounting hardware whenever major components are serviced or replaced helps ensure secure installation and long-term durability. The OE Match Mounting Kit provides factory-style fitment, corrosion-resistant construction and dependable performance, making it the ideal choice for high-quality Porsche repairs, restorations and preventative maintenance.

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

92201KIT

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OE Match Mounting Kit for One Heat Exchanger
2 required per car

Ensure your Porsche's heat exchangers are securely mounted with this OE Match Heat Exchanger Mounting Kit, designed for selected Porsche 911 models. Manufactured to original equipment specifications, this comprehensive fitting kit contains the essential hardware required to correctly install and support the heat exchangers, restoring factory fitment, reducing vibration and ensuring long-term reliability.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC

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 restoring a classic Porsche 911, fitting new mounting hardware helps ensure every component is securely fastened and correctly aligned.

What Does the Heat Exchanger Mounting Kit Do?

The mounting kit secures the heat exchangers to the engine and exhaust system, ensuring they remain correctly positioned while allowing for normal expansion and contraction caused by exhaust heat.

Its primary functions include:

• Securing the heat exchangers safely to the engine.
• Maintaining correct exhaust alignment.
• Supporting the vehicle's cabin heating system.
• Reducing vibration and unwanted movement.
• Helping prevent exhaust leaks caused by loose fixings.
• Ensuring safe, reliable operation of the exhaust and heating systems.

Using the correct mounting hardware is essential for both exhaust performance and efficient cabin heating.

Why Do Heat Exchanger Mounting Kits Fail?

Heat exchanger fixings operate in one of the harshest environments on the vehicle, where they are exposed to continual heat, moisture, corrosion and vibration. Common causes of failure include:

• Rust and corrosion of nuts, bolts and washers.
• Seized or damaged exhaust studs
• Heat cycling weakening fasteners over time.
• Road salt accelerating corrosion.
• Damage during exhaust removal.
• Fatigue caused by years of engine vibration and thermal expansion.

As the hardware deteriorates, heat exchangers can become loose, leading to exhaust leaks, vibration and poor alignment.

When Should the Heat Exchanger Mounting Kit Be Replaced?

The mounting hardware should always be inspected whenever the heat exchangers or exhaust system are removed. Replacement is recommended if you notice:

• Corroded or seized fixings.
• Broken or stretched fasteners.
• Loose heat exchangers.
• Exhaust leaks around mounting points.
• Excessive vibration or rattling.
• Damaged washers or mounting plates.

Many Porsche specialists recommend replacing the complete mounting kit whenever new heat exchangers are fitted to ensure reliable installation and avoid reusing weakened hardware.

Mounting Kit For Pre-Silencer / Intermediate Exhaust.
The OE Match Mounting Kit for Pre-Silencer / Intermediate Exhaust is a comprehensive installation kit designed to provide all the essential hardware required when fitting or replacing the pre-silencer or intermediate exhaust section on compatible Porsche models. Manufactured to OE specifications for fit, strength and durability, this kit ensures secure installation, correct alignment and reliable sealing of exhaust components.  

Kit Includes:
1x Large gasket for mounting heat exchanger to intermediate tube
1x Gasket for rear exhaust to intermediate, exhaust
1x Gasket
9x Bolt, M8x1.25x40mm
9x Lock nut, M8x1.25, cu. plated

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50  

The kit typically includes high-quality fasteners, clamps, nuts, bolts, washers and sealing hardware where applicable, all manufactured from corrosion-resistant materials capable of withstanding the extreme temperatures and harsh operating conditions of the exhaust system. It is the ideal solution when replacing worn or corroded original fittings during exhaust repairs or upgrades.  

What This Product Does:

• Provides the essential hardware required for pre-silencer or intermediate exhaust installation.
• Secures exhaust components safely and correctly.
• Maintains proper exhaust alignment.
• Helps create leak-free exhaust connections.
• Replaces worn, seized or corroded original mounting hardware.
• Reduces vibration and movement within the exhaust system.
• Simplifies exhaust servicing and installation.
• Forms an essential part of a professional exhaust repair or replacement.

Symptoms Of Wear Or Failure:

• Exhaust blowing or gas leaks.
• Loose or misaligned exhaust components.
• Rattling or knocking noises from the exhaust system.
• Corroded or seized nuts, bolts or clamps.
• Broken or missing fixing hardware.
• Increased exhaust vibration.
• Difficulty securing replacement exhaust components.
• Premature gasket wear caused by loose joints.
• Excessive exhaust movement during driving.
• Visible rust or deterioration of mounting components.

Why Replacement Matters:

• Exhaust mounting hardware is continuously exposed to extreme temperatures, moisture, road salt and vibration. Over time, these conditions can cause fasteners to corrode, seize or lose their clamping force, making it difficult to achieve a secure and leak-free installation when replacing exhaust components.
• Reusing old hardware may result in poor alignment, exhaust leaks, unwanted vibration and premature failure of newly installed exhaust parts. Damaged or weakened fixings can also make future servicing more difficult and increase the likelihood of broken studs or seized fasteners.
• Replacing all associated mounting hardware during exhaust repairs ensures a secure installation and helps maximise the lifespan of the exhaust system. The OE Match Mounting Kit provides factory-style fitment, durable corrosion-resistant components and dependable long-term performance, helping maintain the reliability, refinement and performance expected from your Porsche.