Mounting Kit for Heat Exchanger. Porsche 911 1975-83  ❭  91101KIT

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.