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Porsche > 911 & 912 (1965-1989) > Heating / Air Conditioning >

Heater hoses & pipes

Heater hoses & pipes

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DISPLAYING 65 to 73 (of 73 products)
<< 2 3 4 5
Orange foam defroster pipe rear defroster tube. Porsche 911 1965-68 - 90157291120 - HOT11.1.134
3
Orange foam defroster pipe rear defroster tube. Porsche 911 1965-68
90157291120/1
Product Information
Product Information
Orange foam defroster pipe rear defroster tube. 
Sold each - 2 required per car

Fits:
Porsche 911 - 1965 to 1968

Section of diagram ref no 24

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90157291120
90157291120

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Rear defrost vent, Left & Right. Porsche 911/912 (1965-68) - 90157204122, 90157204222, 99970204050 - PP221D
2
Rear defrost vent, Left & Right. Porsche 911/912 (1965-68)
PP221D
Product Information
Product Information
Rear defrost vent, Left & Right.
OE Porsche numbers: 90157204122, 90157204222, 99970204050.

Fits:
Porsche 911/912 (1965-68)

Diagram ref no 22 and 23

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PP221D
90157204122
90157204222
99970204050

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Rubber sleeve heat exchanger. Porsche 911 3.2 Carrera - 93021133904, 93021133901
2
Rubber sleeve heat exchanger. Porsche 911 3.2 Carrera
93021133904/1
Product Information
Product Information
Rubber sleeve heat exchanger.  Connects heat exchangers to heating air pipe tube.
Sold each - 2 required per car.

Fits:

Porsche 911 3.2 Carrera - 1984 to 1989

Diagram ref no 22



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93021133904
93021133904
93021133901

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Rubber Sleeve Heat Exchanger. Porsche 911 3.2L Carrera 1984-89 - 93021133904, 93021133901
6
Rubber Sleeve Heat Exchanger. Porsche 911 3.2L Carrera 1984-89
Special Order item
93021133904
Product Information
Product Information
Rubber Sleeve Heat Exchanger.  Connects Heat Exchangers To Heating Air Pipe Tube.
Sold Each, x2 Required Per Car.

Fits:

Porsche 911 3.2L Carrera 1984>>1989

Diagram Ref No 22



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93021133904
93021133904
93021133901

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Sealing ring for air duct. Porsche 911 74-89 - 91157118900
2
Sealing ring for air duct. Porsche 911 74-89
Special Order item
91157118900
Product Information
Product Information
Sealing ring for air duct

porsche

Fits:
Porsche 911 (1974 - 1983)
Porsche 911 Carrera (1984 - 1989)
Porsche 911 Turbo (1975 - 1989)

Click 'Zoom in' for large parts diagram.
Diagram ref no 16

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91157118900
91157118900

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Vacuum Line Connector. Porsche 911 / 964 / 993 / 996 / 997 / 991 / 986 / 987 - 92857471707, 9P1129487, 92857471705, 92857471703, 92857471706
6
Vacuum Line Connector. Porsche 911 / 964 / 993 / 996 / 997 / 991 / 986 / 987
Special Order item
9P1129487
Product Information
Product Information
Vacuum Line Connector. 

porsche

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 - 1997 to 2005
Porsche 997 - 2005 to 2012
Porsche 991.1 - 2012 to 2016
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012

Click 'Zoom in' for large parts diagram.
Diagram ref no 2 and 13



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9P1129487
92857471707
9P1129487
92857471705
92857471703
92857471706

The product you are viewing cross references to these numbers
Vacuum Line Connector. Porsche 911 / 964 / 993 / 996 / 997 / 991 / 986 / 987 - 92857471707, 9P1129487, 92857471705, 92857471703, 92857471706
6
Vacuum Line Connector. Porsche 911 / 964 / 993 / 996 / 997 / 991 / 986 / 987
9P1129487/1
Product Information
Product Information
Vacuum Line Connector. 

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 - 1997 to 2005
Porsche 997 - 2005 to 2012
Porsche 991.1 - 2012 to 2016
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012


Diagram ref no 2 and 13



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9P1129487
92857471707
9P1129487
92857471705
92857471703
92857471706

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Vent Line Muffler for Auxiliary Heating. Porsche 911 65-76 - 90157206130
2
Vent Line Muffler for Auxiliary Heating. Porsche 911 65-76
90157206130/1
Product Information
Product Information

Vent Line Muffler (Silencer) for Auxiliary Heating 

Maintain the correct operation and refinement of your classic Porsche heating system with this OE Match Vent Line Muffler (Silencer) for the auxiliary heating system. Designed to replace the original component fitted to early air-cooled Porsche 911 models, this precision-manufactured part helps reduce airflow noise within the heater ventilation circuit while ensuring efficient operation of the auxiliary heating system.

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

Diagram ref no 40

Manufactured to OE specifications, this vent line muffler provides accurate fitment and dependable performance, making it an ideal choice during restoration, heater system refurbishment or preventative maintenance. As many original components have now become brittle, corroded or damaged after decades of service, replacing this often-overlooked part helps restore the smooth and quiet operation of the heating and ventilation system.

Whether you're carrying out a concours restoration or simply refreshing your Porsche's heating system, this OE Match component delivers the quality and fit expected for classic air-cooled models.

What Does the Auxiliary Heating Vent Line Muffler Do?

The vent line muffler forms part of the auxiliary heating and ventilation system.

Its purpose is to:

  • Reduce airflow and induction noise within the heating system.
  • Smooth airflow through the vent line.
  • Help maintain efficient heater operation.
  • Reduce unwanted resonance from the ventilation circuit.
  • Contribute to a quieter and more refined cabin environment.
  • Support the correct functioning of the auxiliary heating system.

Although compact, this component plays an important role in maintaining the original characteristics of the Porsche heating system.

Why Replace the Vent Line Muffler?

Years of exposure to heat, moisture, vibration and engine bay contaminants can cause the original vent line muffler to deteriorate.

Common reasons for replacement include:

  • Corrosion.
  • Internal deterioration.
  • Physical damage.
  • Blockages restricting airflow.
  • Age-related wear.
  • Heater system refurbishment.
  • Restoration projects.
  • Missing original components.

Replacing worn heating components helps restore correct airflow while maintaining the efficiency and refinement of the ventilation system.

Symptoms of a Worn or Damaged Vent Line Muffler

Signs that the component may require replacement include:

  • Increased airflow or induction noise from the heating system.
  • Reduced heater efficiency.
  • Restricted airflow.
  • Rattling or vibration within the vent line.
  • Visible corrosion or damage.
  • Missing heater system components.
  • Poor overall heating system performance.

Replacing the vent line muffler helps restore proper airflow characteristics and contributes to quieter heater operation.

Benefits

  • Restores quieter heater operation.
  • Helps maintain correct airflow.
  • Supports efficient auxiliary heating performance.
  • Replaces worn or corroded original components.
  • Improves overall refinement.
  • Easy direct-fit installation.
  • Long-lasting durability.

Why Choose OE Match Heating Components?

OE Match heating and ventilation components are manufactured to provide factory-quality fitment, dependable performance and long service life for classic Porsche models. Designed using high-quality materials and precision manufacturing processes, this vent line muffler restores the original operation of the auxiliary heating system while preserving the authentic character of your air-cooled Porsche. It is an excellent choice for restoration specialists and enthusiasts looking to maintain both comfort and originality.



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90157206130
90157206130

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Water drain tube. Porsche 911 >>1968 - 90157128520
2
Water drain tube. Porsche 911 >>1968
Special Order item
90157128520
Product Information
Product Information
Water drain tube.

porsche

Fits:
Porsche 911 195-68 LHD Cars

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

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90157128520
90157128520

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DISPLAYING 65 to 73 (of 73 products)
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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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