Rubber sleeve heat exchanger. Porsche 911 3.2 Carrera  ❭  93021133904

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.

• Broken or stretched hardware.
• Loose heat exchangers.
• Exhaust leaks around mounting flanges.
• Excessive vibration or rattling.
• Damaged washers, locking plates or mounting brackets.

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.

Heat exchanger sets, Stainless Steel. Porsche 911 3.2ltr Conversion SSI

Are you backdating a 3.2 Carrera or 3.2ltr engine?
Use these SSi heat exchangers to solve the exhaust requirements by deleting the pre-silencer and turning the rear silencer into a "two in, one out" system seen on the early, pre impact bumper cars.

Price is for a SET OF 2

Fits:
Porsche 911 3.2L Conversion SSI
*Oil pipes 91110772910 and 91110773910 are also required also see our exhaust packages

Modification is needed on the engine tinware when installing on 3.2ltr engines.

LONG LIFE
Made using AISI 321/EN4531 titanium stabilized stainless steel  the expected life in the severest road conditions (salt) is 20-30 years.

HIGHER POWER OUTPUT
Output is increased particularly in the low and middle RPM ranges. The design makes power by minimizing intake charge disturbances at valve overlap, and increasing the exhaust gas extraction effect. The volumetric efficiency, and thereby the power output is increased. The SSI headers are significantly improved versions of the basic header design used by Porsche on all normally aspirated six cylinder competition engines.

CARBON MONOXIDE SAFE
Unlike all other aftermarket heat exchangers, the SSI heat exchanger headers are made to minimize the possibility that engine produced acids will internally corrode the enclosed primary tubes, thereby allowing carbon monoxide to enter the passenger compartment. The AISI 304 stainless steel tubing is highly resistant to the byproducts of combustion. SSI use only one piece primary tubes, eliminating the possibility of hand-made welds cracking, and the resulting carbon monoxide leaks.

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Related, superseded, cross reference or alternative numbers for comparison.

91133091917SSI

The product you are viewing cross references to these numbers

Heat control box connecting piece for SSI heat exchangers.



Fits:
Porsche 911 2.7L-3.3 08/1973-07/1986

Click 'Zoom in' for large parts diagram.
Diagram ref 20.

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Related, superseded, cross reference or alternative numbers for comparison.

91165911901

The product you are viewing cross references to these numbers