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DISPLAYING 17 to 32 (of 40 products)
1 2 3
Special Order item
90121119501
Product Information
Product Information
Engine to heat exchanger hose, LEFT 458mm X 60mm.

porsche

Fits:
Porsche 911/911S/ Carrera 3.0 / 911SC 1974-83
Porsche 914-6 1970-76

This product supersedes Porsche's old part numbers:
- 90121119500

Click 'Zoom in' for large parts diagram.
Diagram ref no. 10

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90121119501
90121119501
90121119500

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90121119501/1
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Product Information
Engine to heat exchanger hose, brown paper/alu, LEFT 458mm X 60mm.

oematch

Fits:
Porsche 911/911S/ Carrera 3.0 / 911SC 1974-83
Porsche 914-6 1970-76

This product supersedes Porsche's old part numbers:
- 90121119500

Click 'Zoom in' for large parts diagram.
Diagram ref no. 10

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90121119501
90121119501
90121119500

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Special Order item
91157320400
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Footwell Blower Hose - 40mm x 1 meter long

porsche

Fits:
Porsche 911 1974-85
Porsche 911 Turbo 3.0L, 3.3L 1975-85

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91157320400
91157320400

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91121129700/8
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Exhaust gasket for heater flap.
Fits: Left or right side

Fits:
Porsche 911/912 1965-89
Porsche 930 (911) Turbo 1975-89

Diagram ref no 7

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91121129700
91121129700

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91165911901/2
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Heat control box connecting piece for SSI heat exchangers.

ssi

Fits:
Porsche 911 2.7L-3.3 08/1973-07/1986

Click 'Zoom in' for large parts diagram.
Diagram ref 20.

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91165911901
91165911900
91165911901
1623250201
90.009SSI

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91165911901/1
Product Information
Product Information
Heat control box connecting piece.

Fits:
Porsche 911 2.7L-3.3 08/1973-07/1986

Please Note

If your car has the optional, full automatic heating, you will need to drill the 8mm hole for the temperature sensor.
This connecting piece does not come with it. 

Diagram ref 20

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91165911901
91165911900
91165911901

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Special Order item
91165911901
Product Information
Product Information
Heat control box connecting piece

porsche

Fits:
Porsche 911 2.7L-3.3 08/1973-07/1986

Click 'Zoom in' for large parts diagram.
Diagram ref 20.

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91165911901
91165911900
91165911901

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Special Order item
93021103100
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Heater Blower Hose.

porsche

Fits:
Porsche 911 SC 1980-83

Click 'Zoom in' for large parts diagram
Diagram Ref No. 8

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93021103100
93021103100

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91121127202
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Heater blower hose.

porsche

Fits:
Porsche 911 SC 1975-79

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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91121127202
91121127202
1623500500

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Special Order item
93021162201
Product Information
Product Information
Heater Flap Hose. Heat exchanger to heat control valve hose. Heat-resistant material. 330mm x 60mm can be cut to fit where smaller lengths are needed.

Fits:
Porsche 911 1965-89
Porsche 930 Turbo

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93021162201
93021162201
91457215410

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93021162201/1
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Heater flap hose. Silicone hose for connecting heat control box to heat exchanger, Ø60x330 mm.

Fits:
Porsche 911 Carrera 3.2L 08/83-07/89
Porsche 911 S (mech. injection) 2.4L 08/71-07/73
Porsche 911 SC Turbo 3.3L 08/78-07/89
Porsche 911 SC/911 Carrera 2.7-3.0L 08/75-07/83
Porsche 911 T/E/S (not mech.injection) 2.0-2.4L 01/63-07/73
Porsche 911/911 S/911 Carrera 2.7L 08/73-07/75
Porsche 914 1.7-2.0L 01/69-02/76

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93021162201
93021162201
91457215410

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Special Order item
91110815100
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Product Information
Heater Hose Pipe Regulator Housing to Heat Exchanger.
For cars with Mechanical Injection only.

porsche

Fits:
Porsche 911 T/E/S / 911 Carrera 2.7 1972-74

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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91110815100
91110815100

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Special Order item
99978200491
Product Information
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Heater hose Webasto additional heater - 50mm diameter
Sold each, fits left and right

porsche

Fits:
Porsche 911 - 1965 to 1977

Click 'Zoom in' for large parts diagram.
Diagram ref no 4 and 5


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99978200491
99978200491
99978200490
90157264800
90157264700

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91157202502
Product Information
Product Information
Heating tube inside sill (left/right).
This Heater Tube Inside Sill is a Genuine Porsche OE component designed to route heated air through the inner sill section of classic air-cooled Porsche 911 models from 1969 to 1989. The heater tube carries warm air produced by the engine’s heat exchangers through the sill cavity toward the cabin ventilation system.

Fits:
Porsche 911 1969 - 1989

Diagram ref no 15

Function: Installed inside the vehicle’s sill structure, the tube forms a critical part of the classic 911 heating system. It channels heated air forward into the cabin ducting, supporting effective interior heating, windscreen demisting, and overall comfort in cooler conditions.

Over time, original heater tubes can degrade due to heat cycles, age, and corrosion, resulting in reduced airflow or heat loss before reaching the cabin. In severe cases, damaged ducting may allow unwanted fumes or debris into the heating system. Replacing the tube with a Genuine Porsche part restores factory heating efficiency, preserves originality, and ensures long-term reliability of the heating system.

Replace this heater tube if you notice:
Weak or uneven heater output
  Cracked, brittle, or collapsed ducting
  Heat loss before air reaches the cabin
  Unpleasant odours from the heating system
  During restoration or refurbishment of the sill or heating system

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91157202502
91157202502

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91157202502/1
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Heating tube inside sill, Ø55 mm, length 685 mm.
This heating tube inside sill is a high-quality replacement air-duct tube designed to channel warm air from the exhaust-heated heating system through the sill area of classic Porsche 911 models built from 1969 through 1989 and 356 B/C models. It matches the original part’s fit and performance to maintain proper heating airflow in your vehicle’s cabin.

Fits:
Porsche 356 B/C 1.6 01/1959 - 12/1965
Porsche 911 2.0-3.3 08/1968 - 07/1989
Porsche 912 1.6 01/1965 - 02/1970
Porsche 914 1.7-2.0 01/1969 - 07/1974

Diagram ref no 15

The heating tube directs hot air generated by the engine’s exhaust-heated heat exchangers into the cabin area via the sill ducting. This ensures your classic Porsche’s heater system distributes warmth effectively, improving defogging, defrosting, and passenger comfort in cooler weather.

Function: Installed along the inner sill section, this tube captures heat from the heater system and delivers it through the duct network into the footwell or cabin air distribution points. A properly functioning heater tube helps maintain consistent cabin temperature and prevents heat loss due to damage or age-related degradation of the original ducting.

Over decades of use, original heater tubes can become cracked, brittle, or collapsed, leading to poor airflow, heat loss, or even exhaust gas intrusion into the cabin air system. Replacing the deteriorated tube with an OE Match unit restores effective hot-air distribution, improves cabin comfort and heater efficiency, and keeps the vintage heating system functioning as intended.

Replace this heating tube when you notice:
•  Weak or inconsistent warm air delivery from the heater
  Deteriorated, cracked, or collapsed heater tubing
  Excessive heat loss before reaching the cabin
  Unusual smells from heater ducts (possible leaks)
  During full heater system or sill restoration work

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91157202502
91157202502

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99951214502/1
Product Information
Product Information
Hose clamp for water drain sleeve.

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




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99951214502
99951214502

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DISPLAYING 17 to 32 (of 40 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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