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Porsche > 964 (911) (1989-1994) > Heating / Air Conditioning >

Heater hoses & pipes

Heater hoses & pipes

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DISPLAYING 1 to 16 (of 33 products)
1 2 3
Air induction pipe for air box & Heating Pipe. Porsche 964 & 993 - 96421134101, 99321134103, 96421134101, 96411003005
6
Air induction pipe for air box & Heating Pipe. Porsche 964 & 993
INDUCTION964/993
Product Information
Product Information
Air induction pipe for air box & Heating Pipe.


Heating Pipe This a replica of the Porsche Germany RS lightweight factory heat duct that was used on all 3.6 litre special RS lightweight rare cars. The Porsche part is ugly roto-formed cheap plastic with parting lines whereas accurate replica is carbon fiber. Saves 8 to 9lbs about 4Kg from the rear of all 964's and 993's. Will not work on C2 Turbos/965 cars. Replaces blower motor assembly and ductwork and still allows plenty of heat just like the factory RS part. Ultra cool clear coated real carbon fiber tube that really cleans up engine bay and makes working on engine easy.


Air induction pipe: This a replica of the Porsche Germany RS lightweight factory air duct that was used on all 3.6 liter special RS lightweight race cars. The air duct is directed up towards the boot lid where air is forces into the air duct and then into the air box. Simple do it yourself installation that gives you the RS style engine look.

Please note: Slight modifications will be required in order to make it fit.


Please Note:

All late model 993's 1996-98 (Varioram engines) require the 964 early type fan air guide shroud (as shown on exploded image)
Can be added below

Due to manufacturing tolerances and the nature of composite materials, minor trimming of excess material may be required during installation to ensure optimal fitment.  

Fits:
Porsche 964 C2/C4 1989-1994
Porsche 993 C2/C4 1994-1997



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Related, superseded, cross reference or alternative numbers for comparison.

INDUCTION964
96421134101
99321134103
96421134101
96411003005

The product you are viewing cross references to these numbers
Additional Blower Hose. Porsche 964 - 93021124600
2
Additional Blower Hose. Porsche 964
Special Order item
93021124600
Product Information
Product Information
Additional Blower Hose.

porsche

Fits:
Porsche 964 1989-94 all models

Click 'Zoom in' for large parts diagram.
Diagram ref no 29

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

93021124600
93021124600

The product you are viewing cross references to these numbers
Air duct. Porsche 964 / 993 - 96457225101, 96457225201, 96457225100, 96457225200
3
Air duct. Porsche 964 / 993
Special Order item
96457225
Product Information
Product Information
Air duct.

porsche

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

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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

96457225
96457225101
96457225201
96457225100
96457225200

The product you are viewing cross references to these numbers
Air hose to heater box, Porsche 964 - 96457252701, 96457252801
3
Air hose to heater box, Porsche 964
Special Order item
96457252
Product Information
Product Information
Air hose to heater box, 

porsche

Fits:
Porsche 964 - 1989 to 1994

Click 'Zoom in' for large parts diagram.
Diagram ref no 11




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

96457252
96457252701
96457252801

The product you are viewing cross references to these numbers
Air tube for ventilation. Porsche 964 RHD - 91157311500
2
Air tube for ventilation. Porsche 964 RHD
Special Order item
91157311500
Product Information
Product Information
Air tube for ventilation. LW 61 x 420.

porsche

Fits:
Porsche 964 1989-94 RHD cars

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

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

91157311500
91157311500

The product you are viewing cross references to these numbers
Connecting Hose LEFT. Porsche 964 Turbo
1
Connecting Hose LEFT. Porsche 964 Turbo
Special Order item
99978203790
Product Information
Product Information
Connecting Hose. LEFT.
335 mm.

porsche

Fits:
Porsche 964 (965) Turbo 1989-94

Click "Zoom In" for large parts diagram.
Diagram ref no 5
Connecting Hose RIGHT. Porsche 964 Turbo
1
Connecting Hose RIGHT. Porsche 964 Turbo
Special Order item
99978203990
Product Information
Product Information
Connecting Hose RIGHT.
270 mm

porsche

Fits:
Porsche 964 (965) Turbo 1989-94

Click "Zoom In" for large parts diagram.
Diagram ref no 5
Distribution Y-Piece Vacuum Hose. Porsche 911 / 964 / 924S / 944 / 968 / 928 - 92857372702
3
Distribution Y-Piece Vacuum Hose. Porsche 911 / 964 / 924S / 944 / 968 / 928
Special Order item
92857372702
Product Information
Product Information

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

92857372702
92857372702

The product you are viewing cross references to these numbers
Distribution Y-Piece Vacuum Hose. Porsche 911 / 964 / 924S / 944 / 968 / 928 - 92857372702 - PYVUD
3
Distribution Y-Piece Vacuum Hose. Porsche 911 / 964 / 924S / 944 / 968 / 928
92857372702/1
Product Information
Product Information

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

92857372702
92857372702

The product you are viewing cross references to these numbers
Engine to Heat Exchanger Hose 130MM X 60MM. Porsche 911 / 964 - 93021119601, 93021119600 - URO-009782
1
Engine to Heat Exchanger Hose 130MM X 60MM. Porsche 911 / 964
93021119601/1
Product Information
Product Information
Engine to Heat Exchanger Hose 130mm x 60mm. LEFT.

oematch

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
93021119601
93021119600

The product you are viewing cross references to these numbers
Engine to Heat Exchanger Hose. Porsche 930 / 965
2
Engine to Heat Exchanger Hose. Porsche 930 / 965
Special Order item
93021119601
Product Information
Product Information
Engine to Heat Exchanger Hose on the LEFT.
porsche

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
Heater channel hose screw clamp. Porsche 964 / 993 - 99951250502
3
Heater channel hose screw clamp. Porsche 964 / 993
Special Order item
99951250502
Product Information
Product Information
Heater channel hose screw clamp. 102 x 12.

porsche

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

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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

99951250502
99951250502

The product you are viewing cross references to these numbers
Heater hose to air flap. Porsche 964 C2/C4 - 96457278500
2
Heater hose to air flap. Porsche 964 C2/C4
Special Order item
96457278500
Product Information
Product Information
Heater hose to air flap. Fits: Left or Right.
320 mm.

porsche

Fits:
Porsche 964 C2/ C4 1989-94

Click 'Zoom In' for large parts diagram.
Diagram ref no 5.

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

96457278500
96457278500

The product you are viewing cross references to these numbers
Heater hose to air flap. Porsche 964 C2/C4 - 96457278500 - 911223-04
2
Heater hose to air flap. Porsche 964 C2/C4
96457278500/1
Product Information
Product Information
Heater hose to air flap. Fits: Left or Right.
320 mm.

oematch

Fits:
Porsche 964 C2/ C4 1989-94

Click 'Zoom In' for large parts diagram.
Diagram ref no 5.

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

96457278500
96457278500

The product you are viewing cross references to these numbers
Heater hoses clamp kit. Porsche 964 Turbo 94-94 - 93021123801, 93021123801, 93021119600, 93021124600, 99978203790, 99978203790, 93021123900 - DO88, DO88-KIT157
1
Heater hoses clamp kit. Porsche 964 Turbo 94-94
CLAMP-KIT157S
Product Information
Product Information
Stainless steel clamp kit for heater hoses #DO88-KIT157.

doeighteight

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.

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

CLAMP-KIT157S
93021123801
93021123801
93021119600
93021124600
99978203790
99978203790
93021123900

The product you are viewing cross references to these numbers
Heater pipe additional air blower. Porsche 964 turbo - 93021123601, 93021123600
3
Heater pipe additional air blower. Porsche 964 turbo
Special Order item
93021123601
Product Information
Product Information
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
Related, superseded, cross reference or alternative numbers for comparison.

93021123601
93021123601
93021123600

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DISPLAYING 1 to 16 (of 33 products)
1 2 3
Also found on these pages
About Heater hoses & pipes

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.       

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