Heater hoses & pipes

Air duct for LHD cars.



Fits:
For LHD cars
Porsche 911 1977-85
Porsche 911 Turbo 1977

Click 'Zoom in' for large parts diagram.
Diagram ref no 15

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91157108500

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Clamp For Heater Hose - 330 mm.
The OE Match Clamp for Heater Hose, 330 mm is a high-quality replacement fastening component designed to securely retain heater hoses within the vehicle's cooling and heating system. Manufactured to OE specifications for fit, strength and durability, this clamp provides the clamping force required to maintain a reliable, leak-free connection between heater hoses and associated cooling system components.  

Fits:

• 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)  

Diagram Ref No 12

Constructed from corrosion-resistant materials and engineered to withstand constant exposure to heat, coolant, vibration and pressure fluctuations, this hose clamp helps ensure the integrity of the cooling and heating circuits. Proper hose retention is essential for maintaining coolant flow, heating performance and overall engine cooling system reliability.  

What This Product Does:

• Secures heater hoses to pipes, fittings and cooling system components.
• Maintains a leak-free coolant system connection.
• Provides consistent clamping force under varying temperatures.
• Prevents hose movement caused by vibration and pressure changes.
• Supports efficient coolant circulation through the heating system.
• Helps maintain correct cabin heating performance.
• Contributes to overall cooling system reliability and safety.

Symptoms Of Wear Or Failure:

• Coolant leaks around heater hose connections.
• Visible corrosion or rust on the clamp.
• Loose or slipping heater hoses.
• Coolant residue around hose fittings.
• Reduced heater performance due to coolant loss.
• Sweet coolant odour from the engine bay.
• Low coolant level warnings.
• Overheating concerns caused by coolant leakage.
• Visible clamp deformation or loss of tension.

Why Replacement Matters:

• Heater hose clamps are exposed to continual heat cycles, moisture, coolant chemicals and engine vibration. Over time, corrosion, metal fatigue or loss of clamping tension can reduce their ability to maintain a secure seal between hoses and cooling system components.
• A failing hose clamp can allow coolant to escape, leading to reduced heater efficiency, cooling system pressure loss and potential engine overheating. Even minor coolant leaks can worsen over time, increasing the risk of damage to cooling system components and resulting in costly repairs.
• Replacing a worn or damaged heater hose clamp restores proper hose retention, prevents coolant leaks and helps maintain the efficiency and reliability of the cooling and heating systems. An OE Match replacement provides factory-style fitment, dependable clamping performance and long-term durability, ensuring reliable operation of your Porsche cooling system.

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99951234901

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Clamp for heater hose top & holder for heater cable. Made out of Titanium



Fits:
Porsche 911 1965-86
Porsche 911 Turbo 3.0L / 3.3L 1975-86

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Diagram ref no 2

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90121105

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Clamp for heater hose top & holder for heater cable.
Left or right side



Fits:
Porsche 911 1965-86
Porsche 911 Turbo 3.0L / 3.3L 1975-86

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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90121105

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Clamp for heater hose top & holder for heater cable.



Fits:
Porsche 911 1965-86
Porsche 911 Turbo 3.0L / 3.3L 1975-86

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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90121105

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Climate control hose sealing ring.
Rubber sealing ring / gasket used in the HVAC/heater/ventilation system of classic 911 / 912 cars. Its sealing points where heater/vent hoses pass through body or bulkhead. Ideal when refurbishing HVAC ducts, replacing heater hoses, restoring classic 911/912 ventilation and heat systems.
Sold each. 2 required per vehicle.

Fits:
Porsche 911 1965 - 1989 all models

Diagram ref no 18

Because over decades the original sealing rings often become brittle, hard, compressed or cracked (due to heat cycles, age, vibration, exposure to cabin air, moisture and dust), they lose their ability to seal properly.

This can lead to:
• Unwanted air leaks or drafts into cabin
• Water or dust ingress into the interior or into heater ducts
• Poor heating or ventilation performance
• Increased cabin noise, wind-noise or fumes entering cabin (especially on vehicles with engine-bay to cabin vents).

Replacing with a correct-spec sealing ring ensures a tight, flexible seal that restores proper HVAC function, occupant comfort, and helps preserve the integrity of the car’s interior and ventilation system.

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90157291301

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Climate control hose sealing ring.

Fits:
Porsche 911 1965-89 all models

Diagram ref no 34

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90157291301

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Heater Box Drain Hose 

Maintain the efficiency and longevity of your classic Porsche heating system with this OE Match Heater Box Drain Hose. Manufactured to closely match the original factory specification, this ensures moisture and condensation are safely drained away from the heater box, helping to protect surrounding components from corrosion and deterioration.

Fits:

• 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)

Diagram ref no 19

Ideal for routine maintenance or full restoration projects, this OE Match drain hose provides the correct fit and reliable performance expected from an original-style replacement.

What Does the Heater Box Drain Hose Do?

The heater box drain hose plays an important role in the operation of the air-cooled Porsche heating system.

Its functions include:

• Draining condensation and moisture from the heater box.
• Helping prevent water from collecting inside the heating system.
• Protecting the heater box and surrounding bodywork from corrosion.
• Reducing the risk of trapped moisture causing rust or deterioration.
• Maintaining efficient operation of the heating and ventilation system.

Although often overlooked, this simple hose helps preserve both the heating system and the surrounding chassis.

Why Does the Heater Box Drain Hose Fail?

The original drain hose is continually exposed to heat, moisture, road debris and age, causing the rubber material to deteriorate over time.

Common causes of failure include:

• Rubber becoming brittle and cracking with age.
• Splits caused by repeated heat cycles.
• Hardening due to engine bay temperatures.
• Blockages from dirt, leaves or road debris.
• Perishing caused by prolonged exposure to moisture and contaminants.
• Damage during engine or heater system maintenance.

A damaged or blocked drain hose can allow moisture to remain inside the heater box, increasing the risk of corrosion and reducing heating system efficiency.

When Should It Be Replaced?

Replacement is recommended when:

• The hose is cracked, split or hardened.
• Signs of water retention or corrosion are found around the heater box.
• The heating system is being restored or serviced.
• The engine is removed, providing easy access.
• Restoring a classic Porsche to factory specification.
• Carrying out preventative maintenance on an ageing vehicle.

Replacing the drain hose is an inexpensive way to help protect the heating system and surrounding bodywork from long-term moisture damage.

OE Match Features

• OE Match quality replacement.
• Manufactured to replicate original factory dimensions.
• Durable rubber construction.
• Correct fit and routing for factory heater box assemblies.
• Helps maintain proper heater box drainage.
• Suitable for restoration, repair and preventative maintenance.       

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90157132632

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Engine to Left Heat Exchanger Hose 130mm x 60mm 

Maintain efficient cabin heating and proper airflow within your air-cooled Porsche with this OE Match Engine to Left Hand Heat Exchanger Hose. Measuring 130mm x 60mm, this hose is manufactured to the original factory specification.

Fits:

• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 964 (911) TURBO 3.3L 1991-93

Diagram ref no. 19

Designed for the Porsche 911 turbo (930) and Porsche 964 turbo, this hose connects the engine cooling fan housing to the left-hand heat exchanger, delivering the airflow required for the vehicle's heating system. Manufactured from durable, heat-resistant materials, it provides the correct fit and flexibility needed to withstand the demanding temperatures of the engine bay.

Whether you're replacing a deteriorated original hose or completing a full engine restoration, this OE Match component restores factory-style performance and appearance.

What Does the Engine to Heat Exchanger Hose Do?

The engine to heat exchanger hose is an essential part of the air-cooled Porsche heating system.

Its primary functions include:

• Directing cooling fan air from the engine to the left-hand heat exchanger.
• Providing the airflow required to generate warm air for the cabin heating system.
• Maintaining efficient airflow through the heat exchanger.
• Helping ensure effective windscreen demisting and cabin heating.
• Completing the sealed airflow path between the engine and heating components.

Without an airtight hose, airflow is reduced, resulting in diminished heating performance and reduced system efficiency.

Why Does the Heat Exchanger Hose Fail?

Located in the engine compartment, the hose is constantly exposed to high temperatures, engine vibration and environmental contaminants.

Common causes of deterioration include:

• Heat-related hardening and cracking.
• Rubber or reinforced material becoming brittle with age.
• Splits caused by engine movement and vibration.
• Damage during engine maintenance.
• Oil contamination reducing material strength.
• General wear after years of service.

A damaged hose allows cooling air to escape before reaching the heat exchanger, reducing heating efficiency and affecting overall airflow management.

When Should It Be Replaced?

Replacement is recommended when:

• The hose is cracked, split or torn.
• Heating performance has noticeably decreased.
• Air leaks are present within the heating system.
• The hose has become brittle or collapsed.
• Carrying out an engine or heating system restoration.
• Replacing heat exchangers or other heating system components.
• Performing preventative maintenance on older vehicles.

Replacing ageing heating hoses helps restore proper airflow, improve cabin heating performance and maintain the efficiency of the air-cooled heating system.

Related reference numbers
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93021119601

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Engine to heat exchanger hose 380mm x 60mm.

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

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90121119401

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Engine to heat exchanger hose, 380mm x 60mm.
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
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90121119401

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Engine to Heat Exchanger Hose on the LEFT.


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

Footwell Blower Hose - 40mm x 1 meter long



Fits:
Porsche 911 1974-85
Porsche 911 Turbo 3.0L, 3.3L 1975-85

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91157320400

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Gasket For Heater Flap.

The OE MATCH Gasket for Heater Flap is a high-quality replacement sealing gasket designed for the heater flap assembly within the vehicle's heating and ventilation system. This gasket creates an effective seal between the heater flap and its housing, ensuring that warm air is directed correctly through the heating ducts and into the cabin.
Sold Each.

Fits:

• 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)  

Diagram Ref No 7

Manufactured to OE specifications, the gasket helps prevent unwanted air leakage, improves heater efficiency, and contributes to proper climate control performance. Made from durable materials resistant to heat, age, and environmental exposure, it is an essential component during heater flap refurbishment or restoration work, particularly on classic Porsche models.

What This Product Does:

• Provides a seal between the heater flap and housing assembly
• Prevents unwanted air leakage within the heating system
• Ensures efficient airflow through the heater ducts
• Helps maintain consistent cabin heating performance
• Supports proper operation of the vehicle's ventilation system
• Reduces heat loss within the heater control system

Symptoms Of Wear Or Failure:

• Reduced cabin heating performance
• Air leaks from the heater flap assembly
• Difficulty maintaining cabin temperature
• Poor airflow direction through heater vents
• Increased drafts entering the cabin
• Rattling or vibration from loose sealing materials
• Visible deterioration, cracking, or missing gasket material
• Reduced efficiency of the heating and ventilation system

Why Replacement Matters:

• Restores an effective air-tight seal within the heater system
• Improves heating efficiency and airflow control
• Reduces unwanted air leaks and heat loss
• Enhances overall cabin comfort
• Supports proper operation of the heater flap mechanism
• Helps maintain original HVAC system performance
• Prevents drafts and inconsistent heating
• Provides a professional finish during restoration or maintenance work

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91121129700

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