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Heat Exchangers
By OE Match
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
This Exhaust Heat Exchanger Mounting Kit is a comprehensive OE MATCH quality hardware kit designed to securely install and mount the exhaust heat exchangers on classic Porsche models.
Kit Contents:
x6 Exhaust Gasket Heat Exchanger Manifold (93011119112/1)
x6 Exhaust Hex Nut For Heat Exchanger (99908500103/1)
x6 Exhaust Bolt (90007428203/1)
x6 Exhaust Nut (90091009701/1)
x2 Exhaust Gasket Heat Exchangers To Crossover Or Pre-Silencer (93011119206/1)
x1 Exhaust Gasket Crossover Pipe To Pre-Silencer (93011119308/1)
x6 Exhaust Nut (9000760250C)
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
What This Product Does:
- Secures heat exchangers to the engine and exhaust system
- Maintains proper alignment of exhaust components
- Ensures a gas-tight and stable installation
- Withstands high temperatures and vibration
- Supports efficient heat transfer for cabin heating systems
Symptoms Of Wear Or Failure:
- Exhaust leaks around the heat exchanger connections
- Rattling or loose exhaust components
- Broken or corroded studs and nuts
- Difficulty maintaining proper exhaust alignment
- Reduced heating efficiency inside the cabin
- Visible rust or seized fasteners
Why Replacement Matters:
- Ensures secure and stable installation of heat exchangers
- Prevents exhaust leaks and loss of efficiency
- Maintains correct exhaust alignment and system integrity
- Reduces risk of component damage due to movement or stress
- Simplifies installation during restoration or repair projects
- Improves long-term reliability, especially on classic vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
EXHFITTING.911.4
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
You will require these pipes if you go ahead with the pre 1974 straight through exhaust system.
Oil thermostat to engine crankcase connection.
Fits:
Porsche 911 1984-89 3.2L
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILPIPEKIT01
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG91121100
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.
.jpg?width=197 "Rubber sleeve heat exchanger. Porsche 911 3.2 Carrera - 93021133904, 93021133901")
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Sold each - 2 required per car.
Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Diagram ref no 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93021133904
The product you are viewing cross references to these numbers
-
Throttle linkage bracket 911 1984-86 107-12
-
Additional blower 911 CARRERA 930.20/21/26 1984-86 108-10
-
exhaust system 911 CARERRA 1984-86 202-00
-
Exhaust system 911 CARRERA 1984-86 202-05
-
pedals accelerator control 911 1984-86 702-10
-
control unit, relay, fuse box 911 1984-86 902-00
-
battery, starter, generator 911 1984-86 902-05
OEMatch Heat Exchangers — Fit, Function, Confidence
Heat exchangers recover heat from exhaust gases to supply cabin heating and assist thermal management. For Porsche models they help maintain warm-up behaviour and exhaust routing while limiting fumes reaching the cabin. OEMatch supplies replacements selected for these applications.
Available Types
- Exhaust-to-air heat exchangers in stainless or aluminised steel for air-cooled engines
- Heater cores and heater boxes for cabin heating in classic and modern Porsche models
Understanding OEMatch Heat Exchangers
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original heat exchangers.
OE (Original Equipment) refers to parts matching original specifications for the heat exchangers and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM heat exchangers engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Heat exchangers capture waste heat from exhaust gases and direct it to the heating system or auxiliary circuits; they help preserve engine temperature, reduce warm-up time and support safe cabin ventilation when intact.
Benefits Include
- Restores cabin heating and occupant comfort in air-cooled applications
- Reduces the risk of exhaust gases entering the vehicle cabin
- Improves exhaust routing and thermal efficiency during warm-up
Why Heat Exchangers Wear and Fail
- Corrosion and perforation from condensation and road salt
- Cracks or fatigue from repeated thermal cycling or impact
- Carbon and soot buildup restricting heat transfer and flow
The Importance of Replacing with OEMatch Heat Exchangers
Replacing a worn or leaking heat exchanger preserves cabin heating, prevents exhaust contamination and helps maintain correct exhaust back pressure for engine performance. OEMatch catalogues thousands of Porsche part numbers and cross-references to support repairs and restorations; products are selected to suit classic and modern Porsche applications.
Advantages
- Corrosion-resistant materials such as stainless or aluminised steel
- Formed components that match expected mounting and routing for Porsche models
- Suitable for restoration, maintenance and model-specific repairs
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