Heat Exchangers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

Fits:
Porsche 911 Carrera 3.2L 08/1983-07/1989
Porsche 911 Turbo (930 Turbo) 3.3L 08/1983-07/1989
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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
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Related, superseded, cross reference or alternative numbers for comparison.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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Sold Each, x2 Required Per Car.
Fits:
Porsche 911 3.2L Carrera 1984>>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Related, superseded, cross reference or alternative numbers for comparison.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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 Turbo (930) 1975-89
Contents:
1.) Fabspeed Stainless Steel Dual Outlet Muffler (incl. Deluxe Dual or Quad Style Tips)
2.) Fabspeed Stainless Steel Sport Headers (incl. Gaskets & Braided Oil Lines)
3.) Fabspeed Air Intake System (incl. BMC Air Filter)
Features:
- Increases horsepower and torque by 46 whp and 33 ft-lbs
- Optimized flow enhances throttle response and turbo spool
- Delivers an aggressive yet refined exhaust note
- Manufactured from T304 stainless steel
- Features 14-16 gauge C.N.C. mandrel-bent high-velocity IndyCar/Formula 1 3-into-1 pyramidal merge collectors
- Maxflo Mufflers are radius stress-relieved, hydro-formed cases and pulse TIG welded with 2000-degree ceramic fiber and stainless steel wool packing
- Includes a drip accumulator with double swivels, Aeroquip lines with adapters, and a graphite steel-layered gasket
- Comes with custom 7/8” braided oil lines with Porsche-style OEM fittings
- Air Intake Kit replaces restrictive OEM metal intake box for improved airflow
- Direct bolt-on replacement, preventing catalyst-generated check engine lights
- Backed by Fabspeed's Lifetime Warranty
Installation Information:
- A slight modification to the rear bumper is required to accommodate the dual outlet configuration.
- To ensure a proper header seal, tighten all exhaust bolts to the OEM torque specifications after the initial heat cycle.
- This system is designed for use with the factory turbocharger. If you have upgraded to a K27 turbocharger, please contact us to request the necessary modification from the supplier.
- This system can be fitted to factory 930 Flachbau (Slantnose) models with the purchase of the optional Slantnose oil line kit.
Disclaimer: This product eliminates the OEM catalytic converters from the vehicle and is strictly intended for closed-course competition and off-road use only. Racing Cat Bypass Pipes are designed exclusively for track and race cars, as they are not certified by the EPA or any regulatory emissions body. It is your responsibility to review and comply with all applicable local, state, and federal laws before purchasing and installing these or any aftermarket parts. The end-user and installer assume all risks associated with installation and use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR911TSPKGD
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 Turbo (930) 1975-89
Contents:
1.) Fabspeed Stainless Steel Single Outlet Muffler (incl. Deluxe Dual or Quad Style Tips)
2.) Fabspeed Stainless Steel Sport Headers (incl. Gaskets & Braided Oil Lines)
3.) Fabspeed Air Intake System (incl. BMC Air Filter)
Features:
- Increases horsepower and torque by 46 whp and 33 ft-lbs
- Optimized flow enhances throttle response and turbo spool
- Delivers an aggressive yet refined exhaust note
- Manufactured from T304 stainless steel
- Features 14-16 gauge C.N.C. mandrel-bent high-velocity IndyCar/Formula 1 3-into-1 pyramidal merge collectors
- Maxflo Mufflers are radius stress-relieved, hydro-formed cases and pulse TIG welded with 2000-degree ceramic fiber and stainless steel wool packing
- Includes a drip accumulator with double swivels, Aeroquip lines with adapters, and a graphite steel-layered gasket
- Comes with custom 7/8” braided oil lines with Porsche-style OEM fittings
- Air Intake Kit replaces restrictive OEM metal intake box for improved airflow
- Direct bolt-on replacement, preventing catalyst-generated check engine lights
- Backed by Fabspeed's Lifetime Warranty
Installation Information:
- To ensure a proper header seal, tighten all exhaust bolts to the OEM torque specifications after the initial heat cycle.
- This system is designed for use with the factory turbocharger. If you have upgraded to a K27 turbocharger, please contact us to request the necessary modification from the supplier.
- This system can be fitted to factory 930 Flachbau (Slantnose) models with the purchase of the optional Slantnose oil line kit.
Disclaimer: This product eliminates the OEM catalytic converters from the vehicle and is strictly intended for closed-course competition and off-road use only. Racing Cat Bypass Pipes are designed exclusively for track and race cars, as they are not certified by the EPA or any regulatory emissions body. It is your responsibility to review and comply with all applicable local, state, and federal laws before purchasing and installing these or any aftermarket parts. The end-user and installer assume all risks associated with installation and use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR911TSPKGS
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Sports exhaust conversion kit without catalytic converters.

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Material: AISI304 Stainless Steel
Number of Inlets / Outlets: 2/2
Upgrade your 3.2-litre Carrera engine with our high-performance free-flow exhaust system. Designed to deliver a significant boost in horsepower, this system features Ø41mm OD pipework and a Ø60mm inflow for optimal power output. Engineered for precision, it integrates seamlessly with standard G-model tinware, eliminating the need for additional replacements.
Equipped with O2 sensors on both sides and twin Ø70mm tailpipes, the system not only enhances engine performance but also delivers a richer, more dynamic exhaust note.
Constructed entirely from robust AISI304 stainless steel, this system is built for durability and long-lasting performance. Its precision design ensures perfect compatibility and hassle-free installation, making it the ideal choice for enthusiasts seeking to elevate their engine's capabilities without major modifications.
- Instant Performance Gains: A noticeable boost without complicated installs.
- Amazing Sound: This system doesn't just improve performance—it delivers an aggressive, powerful sound.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620802710
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Sports Exhaust package with two Ø84 mm tail pipes, heat exchangers and oil pipe set for the 911 3.2 Carrera.
OEM style with no modifications of engine tinware needed for installation.
Made of polished stainless steel
Material: Polished Stainless SteelNumber of Inlets / Outlets: 2/2
Surface: Blank
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620803010
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50

Fits:
Porsche 911 3.2ltr - 1984 to 1989
Material: Stainless Steel
Number of Inlets / Outlets: 2/1
Conversion of a performance optimised 3.2ltr Carrera engine into a free-flow system.
This system is specifically engineered to generate increased HP from an enhanced engine by using Ø41mm OD pipework in combination with Ø60mm inflow to the exhaust.
No need to replace the engine tinware as system design allows to fit with standard G-model tinware.
O2 sensor on both left and right side and all made in AISI304 stainless steel.
Tail pipe outlet Ø70mm for optimizing the sound outlet from the system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620802610
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50

Fits:
Porsche 911 3.2ltr 08/1983-07/1989
Material: AISI304 Stainless Steel
Number of Inlets / Outlets: 2/1
Conversion of a performance optimized 3.2 Carrera engine into a free-flow system. This system is specifically engineered to generate increased HP from an enhanced engine by using Ø41mm OD pipework in combination with Ø60mm inflow to the exhaust. O2 sensor (Lambda) fitted to both left and right side.
Made from AISI304 stainless steel, there is no need to replace or modify the engine tinware as system design allows to fit with standard G-model tinware.
The tail pipe outlet is Ø70mm for optimising the exhaust sound from this system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620802310
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50

Fits:
Porsche 911 3.2ltr 08/1983-07/1989
Material: AISI304 Stainless Steel
Number of Inlets / Outlets: 2/2
Conversion of a performance optimized 3.2 Carrera engine into a free-flow system. This system is specifically engineered to generate increased HP from an enhanced engine by using Ø41mm OD pipework in combination with Ø60mm inflow to the exhaust. O2 sensor (Lambda) fitted to both left and right side.
Made from AISI304 stainless steel, there is no need to replace or modify the engine tinware as system design allows to fit with standard G-model tinware.
Tail pipe outlet is Ø70mm for optimizing the sound from this system.
- Instant Performance Gains: A noticeable boost without complicated installs.
- Amazing Sound: This system doesn't just improve performance—it delivers an aggressive, powerful sound.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620802810
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 Chassis 1965-89 Fitted With M64 964/993 3.6L Engine
LONG LIFE
Made from AISI 321/EN4531 titanium-stabilised stainless steel, these heat exchangers are built for durability, with an expected lifespan of 20-30 years in high-salt environments and even longer in milder conditions.
HIGHER POWER OUTPUTDesigned to optimise exhaust flow, these headers improve power output, particularly in low and mid-RPM ranges, by reducing intake charge disturbances at valve overlap and enhancing exhaust gas extraction. SSI headers are a refined version of Porsche’s competition-proven six-cylinder header design.
CARBON MONOXIDE SAFE
Unlike other aftermarket options, SSI heat exchangers are engineered to prevent internal corrosion from engine acids, reducing the risk of carbon monoxide leaks. Constructed from high-quality AISI 304 stainless steel with seamless primary tubes, they eliminate weak weld points that could lead to cracks and leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91133091936SSI
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Novel ultra-high-performance product
• Use of Titanium Ti6Al4V technology
• Extreme perceived quality
Contains 12 x Studs, Nuts & Washers
Fits:
Porsche 911 1965-77
Porsche 964 (none Turbo)
Porsche 993 All
Porsche 996 (none Turbo)
Porsche 997 (none Turbo)
Porsche 986 All
Porsche 987 All
Porsche 718 4 Cyl Turbo
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SL-Ti-121
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 718 2.0L Manual (300 Bhp)
- Porsche Boxster 718 2.0L PDK (300 Bhp)
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster T 718 2.0L Manual (300 Bhp)
- Porsche Boxster T 718 2.0L PDK (300 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 718 2.0L Manual (300Bhp)
- Porsche Cayman 718 2.0L PDK (300Bhp)
- Porsche Cayman S 718 2.5L Manual (350Bhp)
- Porsche Cayman S 718 2.5L PDK (350Bhp)
- Porsche Cayman T 718 2.0L Manual (300Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Novel ultra-high-performance product
• Use of Titanium Ti6Al4V technology
• Extreme perceived quality
Contains 12 x Studs, Nuts & Washers
Fits:
Porsche 911 3.0L SC
Porsche 911 3.2L 1984-89
Porsche 930 turbo
Porsche 965 turbo
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SL-TI-122
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
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Exhaust Heat Exchangers for Porsche | Engine Efficiency & Cabin Comfort
Exhaust heat exchangers play a crucial role in your Porsche’s exhaust and heating systems. They recover heat from the exhaust gases and use it to warm the cabin or assist in managing engine temperature. Built for both performance and comfort, these components ensure efficient energy transfer without compromising exhaust flow or emissions.
At Design911, we stock a wide selection of high-quality exhaust heat exchangers designed for classic and modern Porsche models. Each unit is precision-engineered for optimal heat transfer, corrosion resistance, and long-term durability. Whether you’re restoring a classic air-cooled 911 or servicing a newer model, our heat exchangers maintain proper exhaust gas routing and cabin warmth with efficiency and reliability.
What Do Exhaust Heat Exchangers Do?
An exhaust heat exchanger captures waste heat from exhaust gases and uses it to warm air before it’s directed into the cabin or engine system. This helps improve comfort and overall energy efficiency, particularly in air-cooled Porsche engines.
Core Functions:
- Transfers
exhaust heat for cabin heating or auxiliary systems.
- Maintains
consistent engine temperature by controlling heat flow.
- Improves
thermal efficiency and reduces warm-up time.
- Supports
emissions control by stabilising combustion conditions.
- Preserves performance by ensuring balanced exhaust back pressure.
A properly functioning heat exchanger enhances both driving comfort and exhaust efficiency — essential for performance and reliability.
Why Do Exhaust Heat Exchangers Fail?
Due to continuous exposure to heat, moisture, and exhaust gases, exhaust heat exchangers naturally deteriorate over time.
Common Causes of Failure Include:
- Corrosion
and rust from condensation or road salt.
- Cracks
or leaks caused by metal fatigue or impact damage.
- Carbon
buildup restricting airflow and heat transfer.
- Warping
from repeated heating and cooling cycles.
- Exhaust gas leakage leading to fumes entering the cabin.
A failed heat exchanger can cause loss of cabin heating, reduced efficiency, or even exhaust gas contamination inside the vehicle, making timely replacement vital for safety and comfort.
Why Replace or Upgrade Your Exhaust Heat Exchanger?
Replacing a damaged or leaking exhaust heat exchanger ensures optimal heat transfer, clean air circulation, and continued engine efficiency.
Key Benefits:
Restores
heating performance for air-cooled Porsche systems.
Prevents
exhaust leaks and cabin gas contamination.
Improves
exhaust gas flow and efficiency.
Crafted
from high-grade stainless steel for corrosion resistance.
Precision
fitment for Porsche 911, 914, and other classic models.
Essential
for safe, efficient operation of vintage air-cooled engines.
Modern replacements offer improved materials and engineering, ensuring greater reliability and longer service life than older designs.
Highlights:
- High-quality replacement exhaust heat exchangers for Porsche.
- Restores cabin heating and improves exhaust efficiency.
- Constructed from stainless or aluminised steel for longevity.
- Prevents harmful exhaust leaks into the vehicle cabin.
- Perfect fit for air-cooled and modern Porsche applications.
- Ideal for restorations, rebuilds, and performance maintenance.