Heater hoses & pipes

Air Distributor Connector Lower Piece.



Fits:
Porsche 911 1978-85 LHD Cars

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Diagram ref no 4

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91157318100

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Air Distributor Housing Gasket.



Fits:
Porsche 911 1978-89 LHD Cars

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Diagram ref no 3

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91157317300

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Air duct for LHD cars.



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

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Diagram ref no 15

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91157108500

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Blower Hose in engine bay, appox 1 meter long, 60mm diameter.
An OE Match blower hose made from black outer material with an aluminium inner structure, designed to channel heated air within the engine bay heating system of Porsche 911 models.  

Fits:
Porsche 911 1975 - 1983
Also used on Pre >>1973 911's in the heater system

Diagram ref no 13

This OE Match Blower Hose is a high-quality replacement component designed to replicate the original Porsche heater hose used in classic air-cooled 911 models. Installed in the engine bay, this hose connects the blower motor to the heat exchanger, enabling the transfer of warm air into the vehicle’s heating system.

This hose, approximately 60 mm in diameter and approximately 1 meter long, is designed for proper routing and fit within the limited space of the engine compartment. It plays a crucial role in maintaining proper cabin heating performance, especially in colder driving conditions.

This blower hose channels heated air from the engine-mounted blower to the heat exchangers, ensuring warm air is properly distributed through the vehicle’s heating system.

Function
•  Transfers heated air from blower to heat exchanger
•  Maintains consistent airflow within the heating system
•  Withstands high engine bay temperatures
•  Flexible design allows correct routing and installation
•  Supports effective cabin heating performance

Over time, blower hoses can become brittle, cracked, or collapsed due to prolonged exposure to heat and age. This can lead to reduced airflow, poor heating performance, and potential heat loss within the system. Replacing a worn hose ensures efficient heat transfer, improves cabin comfort, and maintains proper operation of the vehicle’s heating system.

When to replace
•  Visible cracks, splits, or deterioration
•  Reduced or inconsistent cabin heating
•  Hose becoming brittle or collapsing under heat
•  During engine bay or heating system restoration
•  Signs of air leaks or disconnected ducting

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91121152201

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Blower hose in engine bay, Brown paper / aluminium
Appox 1.1meter long 60mm diameter.

This blower hose is a replacement heater / blower air hose for Porsche 911 models from 1975 to 1983. Manufactured in a brown paper and aluminium style, it is designed to replace the original-style flexible ducting used within the heating and ventilation system.

Fits:
Porsche 911 1975 - 1983
 * Also used on Pre >>1973 911's in the heater system

Diagram ref no 13

The blower hose carries air through the heater and ventilation system, helping direct airflow from the engine bay heater blower system through the correct ducting route. A good blower hose supports cabin heating, ventilation, and demisting performance by maintaining proper airflow without leaks or restrictions.

Functions
• Replaces the heater blower hose
•  Carries warm air through the heating and ventilation system
•  Helps support cabin heating and windscreen demisting
•  Maintains correct airflow through the heater ducting
•  Replaces split, crushed, torn, brittle, missing, or heat-damaged hoses
•  Brown paper / aluminium style for classic Porsche appearance
•  Suitable for heater system repair, refurbishment, or restoration.

Why Replace This Part?
Blower hoses are exposed to heat, age, vibration, moisture, and engine bay conditions. Over time, the hose can become brittle, split, collapse, fray, or detach from its mounting points. A damaged hose can reduce heater output, cause poor demisting, allow air leaks, or leave the heater system incomplete. Replacing the blower hose helps restore correct airflow and reliable heating system performance.

When to Replace This Part
•  The blower hose is split, crushed, torn, brittle, or missing
•  Cabin heating output is weak or inconsistent
•  Windscreen demisting performance is poor
•  Air leaks are present around the heater ducting
•  The heater blower system is being serviced
•  Engine bay heater hoses are being replaced
•  The vehicle is undergoing Porsche 911 heating system restoration.

Where it fits on the car
This blower hose fits within the heater blower and ventilation ducting system on Porsche 911 models. It connects according to the factory heating system layout and supports airflow through the heater circuit.

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91121152201

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Hot air hose - Engine compartment blower to heat exchanger. 60 X 1110 mm.



Fits:
Porsche 911 1975-83
Also used on Pre >>1973 911's in the heater system

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Diagram ref no 13

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91121152201

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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

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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.



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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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 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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