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Heater hoses & pipes

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DISPLAYING 1 to 15 (of 15 products)
Special Order item
96457225
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Air duct.

porsche

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

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Diagram ref no 1

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96457225
96457225101
96457225201
96457225100
96457225200

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91157311501::1
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Air flow tube.

porsche

Fits:
Porsche 993 1989-94
Not for Carrera RS

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91157311501
91157311501

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99357278
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Air hose to heater flaps.

porsche

Fits:
Porsche 993 1994-98

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Diagram ref no 5.


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99357278
99357278501
99357278601

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00004320504
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Air hose. 72x2.0

porsche

Fits:
Porsche 993 1994-98

PLEASE NOTE: This part comes in one piece. It needs to be cut to size. It will be enough to replace all 4 hoses No 8 & 7 on diagram.

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00004320504
00004320504

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99321103401
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Connection Piece engine bay heater fan. 

Fits:
Porsche 993 - 1994 to 1998

Diagram ref no 14



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99321103401
99321103401

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99951250502
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Heater channel hose screw clamp. 102 x 12.

porsche

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

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Diagram ref no 8


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99951250502
99951250502

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96462433800
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Hot Air Duct For Blower Gasket.

porsche

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

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Diagram ref no 13.

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96462433800
96462433800

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96421132303
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Hot Air Duct For Blower.

porsche

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

Click 'Zoom in' for large parts diagram.
Diagram ref no 7.

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96421132303
96421132303

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96457204
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Hot air elbow, upper.

porsche

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

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Diagram ref no 10

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96457204
96457204600
96457204500

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99357204100
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Hot air hose.
porsche

Fits:
Porsche 993 1994-98
(not for RS models)

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Diagram ref no 1

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99357204100
99357204100

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00004320504/2
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Air hose. 72mm x 2.8mm, 100mm long

oematch

Fits:
Porsche 993 1994-98

PLEASE NOTE: This part comes in one 100mm long piece. It needs to be cut to size. Replacement for single hoses No 8 & 7 on diagram.

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00004320504
00004320504

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99321135000
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Rubber sleeve for blower motor pipe. 

porsche

Fits:
Porsche 993 1994-98

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Diagram ref no 7

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99321135000
99321135000

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96421131102
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Rubber sleeve for rear blower.

porsche

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

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Diagram ref no 6

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96421131102
96421131102

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9P1129487
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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

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Diagram ref no 2 and 13



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9P1129487
92857471707
9P1129487
92857471705
92857471703
92857471706

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Special Offer
9P1129487/1
Product Information
Product Information
Vacuum Line Connector. 

oematch

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

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Diagram ref no 2 and 13



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92857471706

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DISPLAYING 1 to 15 (of 15 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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