Heater hoses & pipes

Additional Blower Hose.



Fits:
Porsche 964 1989-94 all models

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Diagram ref no 29

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93021124600

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Air duct.



Fits:
Porsche 964 1989-94
Porsche 993 1995-98

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Diagram ref no 1

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96457225

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Air hose to heater box, 



Fits:
Porsche 964 - 1989 to 1994

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Diagram ref no 11




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96457252

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Air tube for ventilation. LW 61 x 420.



Fits:
Porsche 964 1989-94 RHD cars

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Diagram ref no 2

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91157311500

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Connecting Hose. LEFT.
335 mm.



Fits:
Porsche 964 (965) Turbo 1989-94

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Diagram ref no 5

Connecting Hose RIGHT.
270 mm



Fits:
Porsche 964 (965) Turbo 1989-94

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Diagram ref no 5

Vacuum Hose Distribution Y-Piece – 4mm Vacuum Line Splitter 
Sold each - used in various locations

High-quality vacuum hose distribution Y-piece designed for a wide range of Porsche models including 911, 964, 924S, 944, 968, and 928.

This Y-splitter allows a single vacuum source to be divided into two outlets, enabling efficient routing and connection of vacuum lines within the engine bay or HVAC system. It is specifically designed for vacuum hoses with a 4mm outer diameter, ensuring a secure and precise fit.

Fits:

• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1989 3.3L Turbo (930)
• 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 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93
• Porsche 924S 2.5L 1986-87
• Porsche 924S 2.5L 1988
• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89
• Porsche 944S 2.5L 16V 1987-88
• Porsche 944S2 3.0L 16V 1989-91
• Porsche 944 Turbo 2.5L 8V 1985-88
• Porsche 944 Turbo 2.5L 8V 1989-91
• Porsche 944 Turbo S 2.5L 8V 1988
• Porsche 968 3.0L 1992-94
• Porsche 968 Sport 3.0L 1994-95
• Porsche 968 CS 3.0L 1993-95
• Porsche 968 Turbo S 3.0L 1993-94
• Porsche 928S2 4.7L 1984-86

Diagram ref no 4

Manufactured to OEM standards, this connector is ideal for maintaining or restoring vacuum system integrity across multiple Porsche applications.

Key Features

• Universal-style vacuum Y-piece connector
• Suitable for Porsche 911, 964, 924S, 944, 968, and 928
• Designed for 4mm outer diameter vacuum hoses
• Enables splitting of vacuum lines
• OEM-style fit and function
• Durable construction for long-term reliability

Function and Purpose

This Y-piece is a critical connector within the vacuum system.

It helps to:

• Split a single vacuum line into two outputs
• Maintain proper vacuum routing
• Ensure consistent vacuum pressure distribution
• Support engine and HVAC system operation

Why Replace Your Vacuum Connector

Over time, vacuum connectors can degrade due to heat and age.

Common issues include:

• Cracked or brittle plastic
• Vacuum leaks
• Poor hose connections
• Engine or HVAC system malfunctions

Replacing the Y-piece restores proper vacuum system function.

• Loose or unsecured temperature sensor
• Incorrect temperature readings
• HVAC system inconsistencies
• Broken or missing connector clips

Replacing the lock piece restores proper sensor stability and function.

Related reference numbers
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92857372702

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Vacuum Hose Distribution Y-Piece – 4mm Vacuum Line Splitter 
Sold each - used in various locations

High-quality vacuum hose distribution Y-piece designed for a wide range of Porsche models including 911, 964, 924S, 944, 968, and 928.

This Y-splitter allows a single vacuum source to be divided into two outlets, enabling efficient routing and connection of vacuum lines within the engine bay or HVAC system. It is specifically designed for vacuum hoses with a 4mm outer diameter, ensuring a secure and precise fit.

Fits:

• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1989 3.3L Turbo (930)
• 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 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93
• Porsche 924S 2.5L 1986-87
• Porsche 924S 2.5L 1988
• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89
• Porsche 944S 2.5L 16V 1987-88
• Porsche 944S2 3.0L 16V 1989-91
• Porsche 944 Turbo 2.5L 8V 1985-88
• Porsche 944 Turbo 2.5L 8V 1989-91
• Porsche 944 Turbo S 2.5L 8V 1988
• Porsche 968 3.0L 1992-94
• Porsche 968 Sport 3.0L 1994-95
• Porsche 968 CS 3.0L 1993-95
• Porsche 968 Turbo S 3.0L 1993-94
• Porsche 928S2 4.7L 1984-86

Diagram ref no 4

Manufactured to OEM standards, this connector is ideal for maintaining or restoring vacuum system integrity across multiple Porsche applications.

Key Features

• Universal-style vacuum Y-piece connector
• Suitable for Porsche 911, 964, 924S, 944, 968, and 928
• Designed for 4mm outer diameter vacuum hoses
• Enables splitting of vacuum lines
• OEM-style fit and function
• Durable construction for long-term reliability

Function and Purpose

This Y-piece is a critical connector within the vacuum system.

It helps to:

• Split a single vacuum line into two outputs
• Maintain proper vacuum routing
• Ensure consistent vacuum pressure distribution
• Support engine and HVAC system operation

Why Replace Your Vacuum Connector

Over time, vacuum connectors can degrade due to heat and age.

Common issues include:

• Cracked or brittle plastic
• Vacuum leaks
• Poor hose connections
• Engine or HVAC system malfunctions

Replacing the Y-piece restores proper vacuum system function.

• Loose or unsecured temperature sensor
• Incorrect temperature readings
• HVAC system inconsistencies
• Broken or missing connector clips

Replacing the lock piece restores proper sensor stability and function.

Related reference numbers
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92857372702

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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
Related, superseded, cross reference or alternative numbers for comparison.

93021119601

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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

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Diagram ref no. 19

Heater channel hose screw clamp. 102 x 12.



Fits:
Porsche 964 1989-94
Porsche 993 1995-98

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Diagram ref no 8

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99951250502

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Heater hose to air flap. Fits: Left or Right.
320 mm.



Fits:
Porsche 964 C2/ C4 1989-94

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Diagram ref no 5.

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96457278500

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Heater Hose to Heater Air Flap - 320mm long
Fits left or right hnd side

Restore the efficiency of your Porsche's heating and ventilation system with this OE Match Heater Hose, designed specifically to connect the heater ducting to the heater air flap on the Porsche 964 Carrera 2 and Carrera 4. Manufactured to original equipment specifications, this high-quality replacement hose ensures warm air is directed efficiently through the heating system, maintaining reliable cabin comfort and proper airflow.

Fits:

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93

Diagram ref no 5

Whether you're restoring a classic 964, replacing deteriorated heater ducting or refurbishing the complete heating system, this OE Match heater hose provides factory-quality fitment and dependable long-term durability.

What Does the Heater Hose Do?

The heater hose connects the engine's heating ductwork to the heater air flap assembly, allowing heated air generated by the engine cooling fan and heat exchangers to be directed into the cabin when required.

Its primary functions include:

• Carrying heated air to the heater air flap.
• Maintaining efficient airflow through the heating system.
• Supporting rapid cabin heating.
• Helping deliver effective windscreen demisting and defrosting.
• Preventing warm air from escaping before reaching the heater controls.
• Maintaining the correct operation of the Porsche heating and ventilation system.

A correctly sealed heater hose helps maximise heating efficiency and passenger comfort.

Why Do Heater Hoses Fail?

Heater hoses operate in a high-temperature environment and gradually deteriorate through age and continual heat exposure. Common causes of failure include:

• Heat cycling causing the material to harden.
• Age-related cracking and splitting.
• Perishing caused by engine bay temperatures.
• Oil contamination degrading the hose material.
• Abrasion against surrounding components.
• General deterioration after years of service.

As the hose deteriorates it can develop splits, become brittle or collapse, allowing valuable heated air to escape before reaching the cabin.

When Should the Heater Hose Be Replaced?

The heater hose should be inspected whenever the heating system or engine is serviced. Replacement is recommended if you notice:

• Cracked or brittle hose material.
• Torn or split ducting.
• Loose hose connections.
• Reduced cabin heating performance.
• Poor windscreen demisting.
• Visible heat damage or distortion.

Many Porsche specialists recommend replacing ageing heater hoses during engine-out servicing or whenever the heating ductwork is being refurbished.

Related reference numbers
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96457278500

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Stainless steel clamp kit for heater hoses #DO88-KIT157.



To Fit:
Porsche 911 (964 Turbo) 3.3 Turbo 1990-1994

Kit of 14 clamps

The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimise impact on hose surface.

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CLAMP-KIT157S

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Heater pipe additional air blower. 

Fits:
Porsche 964 turbo 3.3ltr - 1991 to 1993
Porsche 964 turbo S 3.6ltr - 1991 to 1993

Diagram ref no 36

Related reference numbers
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93021123601

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