Heater hoses & pipes
- 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 2.0 01/63-07/67
Porsche 912 1.6 01/65-07/67
Diagram ref no 22 and 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90157204
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Fits:
Porsche 911 1968-89
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90157132632
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)

Fits:
Porsche 911 TURBO 1978-89
Porsche 911 (930) Turbo 1975-77
Porsche 964 TURBO 3.3L 1991-92
This product supersedes Porsche's old part numbers:
- 93021119600
Click 'Zoom in' for large parts diagram.
Diagram ref no. 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93021119601
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)
- Porsche 964 (911) TURBO 3.3L 1991-93
Fits:
Porsche 912
Porsche 911 1965-73
Engine to Heat Exchanger on the Left or Right
Fits:
Porsche 930 Turbo 1975-89
Porsche 911SC
Porsche 911 3.2L
Engine to Heat Exchanger on the right
This product supersedes Porsche's old part numbers:
- 90121119400
Diagram ref no. 20
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121119401
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)
This is a high-quality replacement hot-air hose connecting the engine fan duct to the heat-exchanger in classic Porsche models. With an internal diameter of 60 mm and a length of 380 mm, this hose replicates the original specification, including the aluminium-lined construction and brown-paper exterior that Porsche used.
Fits:
Porsche 912
Porsche 911 1965-73
Engine to Heat Exchanger on the Left or Right
Fits:
Porsche 930 Turbo 1975-89
Porsche 911SC
Porsche 911 3.2L
Engine to Heat Exchanger on the right
Diagram ref no. 20
• Position on Vehicle: Engine bay, connecting the engine fan duct/air-intake housing to the heat-exchanger (or heater box) via the hose (typically on the right side).
• Cross-Reference / Alternative Numbers: 901 211 194 01 (current) supersedes and replaces 901 211 194 00.
• Material & Construction: Crafted from heat-resistant aluminium-lined hose, clad externally with the original brown-paper finish and sized to match the factory shape (60mm inner diameter, ~380mm length). Built for high-temperature engine-bay environment and correct airflow performance.
• Applications: Ideal when the original hose is cracked, delaminated, deformed, missing, or when restoring correct heating/airflow behaviour in the engine bay or passenger compartment on classic air-cooled Porsche cars.
This hot-air hose plays a vital role in engine and cabin heat management: if it's cracked, collapsed, or detached, you may experience reduced heater output, engine-bay overheating, erratic air-flow, or loss of original ducting performance. Installing a correctly specified replacement restores the original system’s performance and helps maintain correct engine and cabin temperature control.
When and why to replace:
• Visible cracking, splitting, or sagging in the old hose.
• Hose has been removed, reused too often or replaced with incorrect diameter/length.
• Heater output is weak or airflow to engine/compartment is abnormal.
• Restoring a classic 911/930 and you require original spec parts for authenticity and functionality.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121119401
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)

Fits:
Porsche 911/911S/ Carrera 3.0 / 911SC 1974-83
Porsche 914-6 1970-76
This product supersedes Porsche's old part numbers:
- 90121119500
Click 'Zoom in' for large parts diagram.
Diagram ref no. 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121119501
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 914 (1970-1976)

Fits:
Porsche 911/911S/ Carrera 3.0 / 911SC 1974-83
Porsche 914-6 1970-76
This product supersedes Porsche's old part numbers:
- 90121119500
Click 'Zoom in' for large parts diagram.
Diagram ref no. 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121119501
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 914 (1970-1976)
Fits:
Porsche 911 TURBO 1978-89
Porsche 911 (930) Turbo 1975-77
Porsche 964 TURBO 3.3L 1991-92
This product supersedes Porsche's old part numbers:
- 93021119600
Click 'Zoom in' for large parts diagram.
Diagram ref no. 19
- 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

Fits:
Porsche 911 1974-85
Porsche 911 Turbo 3.0L, 3.3L 1975-85
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91157320400
The product you are viewing cross references to these numbers
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits: Left or right side
Fits:
Porsche 911/912 1965-89
Porsche 930 (911) Turbo 1975-89
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91121129700
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)

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
- 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)
Fits:
Porsche 911 2.7L-3.3 08/1973-07/1986
Please Note
If your car has the optional, full automatic heating, you will need to drill the 8mm hole for the temperature sensor.
This connecting piece does not come with it.
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
- 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 1975-1977 3.0L Turbo (930)

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
- 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 1975-1977 3.0L Turbo (930)

Fits:
Porsche 911 Carrera 1984-89
Engine Type: 93020, 93021, 93025, 93026
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93021133701
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 3.2L Carrera 1984-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Shown price is for each clamp.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG51208702
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 SC 1980-83
Click 'Zoom in' for large parts diagram
Diagram Ref No. 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93021103100
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
-
oil supply for converter sportomatic 911 T/E UPTO 1971 104-35
-
oil supply for converter sportomatic 911 T-E/E/S and 911 T-V 1972 104-40
-
SPM - oil supply for converter 911 1978-83 104-10
-
blower engine 911 SC 1978-83 108-10
-
tank ventilation 911 1978-83 201-15
-
exhaust system 911 TURBO 930.60/66 1978-83 202-10
-
heating air supply 911 1978-83 202-20
-
oil supply for converter sportomatic 911 1973 ONWARDS 104-45
-
cooling air duct, control switch 911 1978-83 813-10
-
wiring harnesses 911 1978-83 902-10
-
speedometer 911 1978-83 906-05
-
injection system throttle body 911 T-E/E/S and CARRERA 2.7 1972 ONWARDS 107-30
-
Injection system with air cleaner and mixture control unit for 911 T-K 1972 ONWARDS 107-35
-
Injection system with fuel line valves flap connection and warm-up valve 911 T-K 1972 ONWARDS 107-40
-
Fuel system lines with fuel pump front for 911 UPTO 1971 201-00
-
heating air supply for 911 T/E/S 1970 ONWARDS and 911 T-V, CARRERA 2.7, 911 T-K 1972 ONWARDS 202-00
-
exhaust system for 911 T/E/S 1972 ONWARDS and 911 T-V, CARRERA 2.7, 911 T-K 1970-73 202-05
-
additional blower 911 CARRERA 930.20/25/26 1987-89 108-10
-
tank ventilation 911 1987-89 201-15
-
exhaust system 911 TURBO 930.66/68 1987-89 202-10
-
heating air supply 911 1987-89 202-20
-
Additional blower 911 CARRERA 930.20/21/26 1984-86 108-10
-
Tank ventilation 911 1984-86 201-15
-
Exhaust system 911 TURBO 1984-86 202-10
-
heating air supply 911 1984-86 202-20
-
ventilation heating system - 1 - 911 1984-86 813-00
-
additional blower 911 1984-86 813-02
-
Ventilation and heating 911 1970-73 813-00
-
cooling air duct left-hand drive 911 1984-86 813-10
-
cooling air duct right-hand drive 911 1984-86 813-11
-
Oil supply for converter oil tank for SPM 911 1974-77 104-20
-
Air cleaner k-jetronic 911 1974-77 106-00
-
K - JETRONIC mixture control unit 911 1974-76 107-00
-
K - JETRONIC mixture control unit 911 1977 ONWARDS 107-05
-
Mechanical injection right for Model 911/83 1974-77 107-25
-
Additional blower 911 1975 ONWARDS 108-10
-
Exhaust system K-JETRONIC 911.83 Cars 1974 ONWARDS 202-00
-
Heating air supply 911 1974-77 202-30
-
Centre console 911 1974-77 809-15
-
Ventilation heating system - 1 - 911 UPTO 1976 813-00
-
Air conditioner condenser lines rear 911 1974-77 813-60
-
Air conditioner, cooling air duct 911 1974-77 813-65
-
Wiring harnesses 911 1974-77 902-20
-
oil supply for converter sportomatic for 911 /L/S/TU UPTO 1968 and 911 T/E 1969 ONWARDS 104-20
-
damper filter for - SOLEX 40 PII-4 - carburettor for 912 UPTO 1968 106-06
-
oil wetted air cleaner for cars with 5-speed transmission not for (I),(F) for (USA) M 075 0001 >>. 912 TARGA 1965-69 106-15
-
fuel system 911 1965-69 201-00
-
heating air supply 911 1965-69 202-00
-
exhaust system 911 1965-69 202-10
-
handbrake heating actuator 911 UPTO 1967 701-05
-
handbrake, manual throttle, heating, actuator for 911 1968 ONWARDS 701-10
-
interior equipment Rear 911 1965-69 807-05
-
ventilation heating 911 upto 1968 813-00
-
ventilation heatin 911 1969 onwards 813-15
-
heating and ventilation unit accessories 911 1965-69 813-20
-
wiring harnesses 911 1965-69 902-15
-
exhaust system 911 TURBO 1975-77 202-00
-
exhaust system 911 TURBO 1975-77 (J) (USA) 202-10
-
heating air supply 911 TURBO 1975-77 202-30
-
ventilation heating system - 1 - 911 TURBO upto 1976 813-00
-
air conditioner, condenser, lines rear 911 TURBO 1975-77 813-60
-
air conditioner cooling air duct 911 TURBO 1975-77 813-65
-
wiring harnesses 911 TURBO 1975-77 902-20
-
speedometer, pulse sender 911 TURBO 1975-77 906-05
-
wiring harnesses: passenger compartment, battery-starter cable, boot floor plate 911 1984-86 902-10
-
speedometer 911 1984-86 906-05
-
centre console 911 TURBO 1975-77 809-15
Porsche Heater Hoses & Pipes | Reliable Coolant Flow & Cabin Heating Efficiency
Heater hoses and pipes are essential components in your Porsche’s heating and cooling system. They carry heated coolant from the engine to the heater core, enabling warm air circulation throughout the cabin. Without properly functioning hoses and pipes, the heating system cannot deliver consistent temperature control or maintain efficient engine cooling.
At Design911, we supply premium heater hoses and coolant pipes that meet or exceed original engineering standards. Constructed from high-quality rubber, aluminium, or reinforced composite materials, these components ensure leak-free performance, excellent heat resistance, and long-term durability.
Whether you’re restoring a classic 911 or maintaining a modern Porsche with advanced climate control systems, our heater hoses and pipes provide the precision, fitment, and performance required for dependable heating and cooling.
What Do Heater Hoses & Pipes Do?
Heater hoses and pipes form the circulation path that carries hot coolant from the engine to the heater core, allowing the HVAC system to provide warm air inside the cabin.
Core Functions:
- Transfer heated coolant to the heater core for cabin warming.
- Maintain proper coolant flow between engine and heating system.
- Regulate temperature and prevent air pockets in the system.
- Ensure efficient heat exchange for passenger comfort.
- Protect against coolant loss and overheating.
A properly functioning set of hoses and pipes is critical for both engine cooling performance and interior heating efficiency.
Why Do Heater Hoses & Pipes Fail or Degrade?
These components endure constant heat, pressure, and vibration. Over time, material fatigue and corrosion can lead to leaks or blockages.
Common Causes of Failure Include:
- Age-related cracking, swelling, or brittleness of rubber hoses.
- Corrosion or pinhole leaks in metal pipes.
- Coolant contamination or chemical degradation.
- Loose or damaged hose clamps causing leaks.
- Blockages from scale or debris restricting coolant flow.
When heater hoses or pipes fail, symptoms include coolant leaks, weak cabin heat, overheating, or a sweet smell of antifreeze inside the cabin.
Why Replace Your Porsche Heater Hoses & Pipes?
Replacing worn or damaged heater hoses and pipes restores proper coolant circulation, prevents leaks, and ensures stable heating and engine temperature control.
Key Benefits:
- Restores efficient coolant flow and cabin heating performance.
- Prevents leaks, overheating, and engine damage.
- Improves reliability and system pressure integrity.
- Resistant to heat, pressure, and corrosion for long lifespan.
- Direct-fit replacements for Porsche 911, Cayman, Boxster, Panamera, Macan, and Cayenne models.
- Ideal for maintenance, restorations, or performance upgrades.
It’s recommended to replace heater hoses and clamps during coolant service intervals to maintain maximum system reliability.
Highlights
- Precision-engineered Porsche heater hoses and coolant pipes.
- Constructed from high-quality, heat-resistant materials.
- Direct-fit replacements for Porsche models old and new.
- Designed for long-term resistance to pressure and corrosion.
- Ensures reliable heating and engine cooling performance.
- Ideal for restoration, servicing, and preventative maintenance.