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Fuel Lines & Breather Hoses

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DISPLAYING 1 to 16 (of 37 products)
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N0203621/1
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12 x 17mm Braided Fuel Tank Breather Hose – Fuel Tank Ventilation
Sold per metre

High-quality 12 x 17mm braided fuel tank breather hose designed for use in fuel tank ventilation systems across a wide range of vehicles.

This hose is specifically engineered to safely transport fuel vapours, maintaining proper tank ventilation and preventing pressure build-up within the fuel system. The braided outer layer provides added durability and protection while retaining flexibility for easy routing.

Fits:

  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GTS 2.0L 1982
  • 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

Diagram ref no 39

Sold per metre, this hose allows for precise length requirements, making it ideal for maintenance, repair, or restoration of fuel tank breather and ventilation systems.

Key Features

• 12mm internal diameter, 17mm outer diameter
• Braided outer layer for durability and protection
• Designed for fuel tank breather and ventilation systems
• Suitable for fuel vapour transport
• Sold per metre for custom length applications
• Flexible and easy to install
• OEM-style appearance and performance

Function and Purpose

This breather hose is an essential component of the fuel system.

It helps to:
• Vent fuel vapours safely from the tank
• Prevent pressure build-up within the fuel system
• Maintain correct tank ventilation
• Support efficient fuel system operation
• Reduce risk of fuel odours and vapour leaks

Why Replace Breather Hoses

Over time, breather hoses can degrade due to fuel vapours and heat.

Common issues include:
• Cracking or splitting
• Hardening and reduced flexibility
• Fuel vapour leaks
• Blocked or restricted airflow

Replacing worn hoses ensures proper ventilation and safe system operation.



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Related, superseded, cross reference or alternative numbers for comparison.

N0203621
N0203621
N 0203621

The product you are viewing cross references to these numbers
N0203781/1
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Product Information

Braided Fuel Breather Hose – 270mm long

High-quality braided fuel breather hose supplied in a 270mm pre-cut length, designed for use in Porsche fuel tank ventilation systems.

Fits:

  • Porsche 924 2.0L 1982-85
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-85

Diagram ref no 39

This hose is engineered to safely transport fuel vapours, maintaining correct tank pressure and ensuring efficient ventilation within the fuel system. The braided outer layer provides added strength and protection while maintaining flexibility for easy installation in confined spaces.

Manufactured to OEM specifications, this hose ensures reliable performance and correct fitment, making it ideal for maintenance, repair, or restoration of Porsche fuel systems.

Key Features

• Braided fuel breather hose
• 270mm pre-cut length for direct replacement
• OEM part number N0203781
• Designed for fuel tank ventilation systems
• Resistant to fuel vapours and heat
• Flexible and durable construction
• OEM-style fit and appearance

Function and Purpose

This breather hose is a key component within the fuel system.

It helps to:
• Vent fuel vapours safely from the tank
• Maintain proper internal tank pressure
• Prevent vapour build-up and system imbalance
• Support efficient fuel system operation
• Ensure safe and reliable vehicle performance

Why Replace Breather Hoses

Over time, breather hoses can degrade due to exposure to heat and fuel vapours.

Common issues include:
• Cracking or splitting
• Hardening and loss of flexibility
• Fuel vapour leaks
• Reduced ventilation efficiency

Replacing worn hoses ensures proper fuel system function and safety.



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

N0203781
N0203781
N 0203781

The product you are viewing cross references to these numbers
94420145301/1
Product Information
Product Information

Braided Fuel Tank Breather Hose – 400mm Long

High-quality braided fuel tank breather hose designed for Porsche 944 models, supplied in a 400mm pre-cut length for direct replacement.

This hose is used within the fuel tank ventilation system to safely manage fuel vapours and maintain correct tank pressure. The braided outer layer provides enhanced durability and protection while maintaining flexibility for easy installation in the engine bay or underbody routing.

Fits:

  • Porsche 924 2.0L 1984-85
  • Porsche 924S 2.5L 1986-87
  • Porsche 944 2.5L 8V 1984-87

Diagram ref no 24

Manufactured to OEM specifications, this hose ensures correct fitment and reliable performance, making it ideal for maintenance, repair, or restoration of Porsche 944 fuel systems.

Key Features

• Genuine-style braided breather hose
• 400mm pre-cut length for easy installation
• Suitable for Porsche 944 models
• Designed for fuel tank ventilation systems
• Resistant to fuel vapours and engine bay conditions
• Flexible and durable construction
• OEM-style fit and appearance

Function and Purpose

This breather hose is an essential component of the fuel system.

It helps to:
• Vent fuel vapours safely from the fuel tank
• Maintain correct internal tank pressure
• Prevent vapour build-up and system imbalance
• Support efficient fuel system operation
• Ensure safe and reliable vehicle performance

Why Replace Breather Hoses

Over time, breather hoses degrade due to heat and fuel vapour exposure.

Common issues include:
• Cracking or splitting
• Hardening and reduced flexibility
• Fuel vapour leaks
• Restricted or inefficient ventilation

Replacing worn hoses restores proper ventilation and system safety.



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

94420145301
94420145301

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N0203631/1
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Breather Hose - 15 x 2.5mm 
Sold by the metre

High-quality breather hose with 15 x 2.5mm dimensions, designed for Porsche 924, 924S, and 944 models.

This versatile hose is used across multiple systems, including fuel tank breather, oil breather, and inlet breather applications, making it an essential component for maintaining proper ventilation and pressure balance within the engine and fuel systems.

Fits:

  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-85

Diagram ref no 6 

Engineered to OEM specifications, this hose offers durability, flexibility, and resistance to heat, oil, and fuel vapours, ensuring reliable performance in demanding engine bay environments. Ideal for maintenance, repair, or restoration of classic Porsche models.

Key Features

• 15 x 2.5mm breather hose specification
• Suitable for Porsche 924, 924S, and 944
• Part number N0203631
• Multi-use: fuel tank, oil, and inlet breather systems
• Resistant to heat, oil, and fuel vapours
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This breather hose serves multiple ventilation roles across the vehicle.

It helps to:
• Vent fuel tank vapours safely
• Regulate pressure in oil breather systems
• Maintain airflow within inlet systems
• Prevent pressure build-up in critical components
• Support efficient engine and fuel system operation

Why Replace Breather Hoses

Breather hoses are exposed to heat, oil, and vapours, leading to wear over time.

Common issues include:
• Cracking or splitting
• Oil or vapour leaks
• Hardening and loss of flexibility
• Reduced ventilation efficiency

Replacing worn hoses ensures proper system balance and prevents performance issues.



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

N0203631
N0203631

The product you are viewing cross references to these numbers
477209161/1
Product Information
Product Information

Fuel & Clutch Pipe Connector – M14 
Sold each

High-quality M14 pipe connector designed for use in Porsche fuel and clutch hydraulic systems across a wide range of models including 924, 944, 911, 964, and 993.

This connector is used to securely join fuel or hydraulic lines, ensuring a reliable and leak-free connection under pressure. Whether used in the fuel delivery system or clutch hydraulic circuit, it plays a vital role in maintaining system integrity and performance.

Fits:

  • 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 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) GT2 1994-97
  • Porsche 993 (911) TURBO S 1994-97
  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • 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

Diagram Ref No 13

Manufactured to OEM specifications, this M14 connector provides precise fitment and durability, making it ideal for maintenance, repair, or restoration work across multiple Porsche platforms.

Key Features

• M14 pipe connector for fuel and clutch systems
• Suitable for multiple Porsche models
• Ensures secure, leak-free line connections
• Designed for fuel and hydraulic applications
• OEM-style fit and performance
• Durable construction for long-term reliability

Function and Purpose

This connector is a critical link within both fuel and hydraulic systems.

It helps to:

• Join pipework securely under pressure
• Maintain system sealing and integrity
• Prevent leaks in fuel or clutch circuits
• Support safe and reliable operation

Why Replace Pipe Connectors

Over time, connectors can wear or degrade due to pressure, vibration, and exposure.

Common issues include:

• Thread wear or deformation
• Fuel or hydraulic fluid leaks
• Poor sealing between pipe connections
• Reduced system reliability

Replacing connectors ensures safe and effective system performance.



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

477209161
477209161

The product you are viewing cross references to these numbers
Special Order item
477201393C
Product Information
Product Information
Fuel breather hose.
porsche

Fits:
Porsche 924 1980-85
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 968 1992-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 45

Related reference numbers
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477201393C
477201393C
477201393A

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N0203791/1
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Product Information

Fuel Tank Breather Hose 

High-quality braided fuel tank breather hose designed for Porsche 924 and 944 models, supplied in a 400mm length  to be trimmed to for direct replacement.

This hose is used within the fuel tank ventilation system to safely manage fuel vapours and maintain correct tank pressure. The braided outer layer provides enhanced durability and protection while maintaining flexibility for easy installation in the engine bay or underbody routing.

Fits:

  • Porsche 924 2.0L 1976-83
  • Porsche 944 2.5L 8V 1982-83

Key Features

• Genuine-style braided breather hose
• 400mm pre-cut length for easy installation
• Suitable for Porsche 924 and 944 models
• Designed for fuel tank ventilation systems
• Resistant to fuel vapours and engine bay conditions
• Flexible and durable construction
• OEM-style fit and appearance

Function and Purpose

This breather hose is an essential component of the fuel system.

It helps to:
• Vent fuel vapours safely from the fuel tank
• Maintain correct internal tank pressure
• Prevent vapour build-up and system imbalance
• Support efficient fuel system operation
• Ensure safe and reliable vehicle performance

Why Replace Breather Hoses

Over time, breather hoses degrade due to heat and fuel vapour exposure.

Common issues include:
• Cracking or splitting
• Hardening and reduced flexibility
• Fuel vapour leaks
• Restricted or inefficient ventilation

Replacing worn hoses restores proper ventilation and system safety.



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

N0203791
N0203791

The product you are viewing cross references to these numbers
Special Order item
99918171650
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Fuel Hose - 9.5 x 15.5mm
Sold per metre

High-quality fuel hose 9.5 x 15.5mm designed for Porsche 924, 944, 968, and 928 models, supplied per metre for flexible installation and precise fitment.

This hose is engineered for safe and reliable fuel transfer within the fuel system, providing consistent flow between key components such as fuel pumps, filters, and injectors. Built to withstand fuel exposure and engine bay conditions, it ensures long-term durability and performance.

Fits:

  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • 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 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Sold per metre, this hose allows you to cut to the exact length required, making it ideal for maintenance, repair, or restoration of Porsche fuel systems.

Key Features

• 9.5mm internal diameter, 15.5mm outer diameter
• Suitable for Porsche 924, 944, 968, and 928
• Designed for fuel system applications
• Sold per metre for custom lengths
• Resistant to fuel and engine bay heat
• Flexible and durable construction
• OEM-style specification and performance

Function and Purpose

This fuel hose is a vital component of the fuel delivery system.

It helps to:
• Transport fuel safely between system components
• Maintain consistent fuel flow and pressure
• Ensure leak-free operation
• Support efficient engine performance
• Enable reliable fuel delivery under load

Why Replace Fuel Hoses

Fuel hoses degrade over time due to heat and fuel exposure.

Common issues include:
• Cracking or splitting
• Fuel leaks and safety risks
• Hardening and reduced flexibility
• Reduced fuel delivery efficiency

Replacing worn hoses ensures safe operation and restores optimal performance.



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

99918171650
99918171650

The product you are viewing cross references to these numbers
99918171650/1
Product Information
Product Information

Fuel Hose - 9.5 x 15.5mm
Sold per metre

High-quality fuel hose 9.5 x 15.5mm designed for Porsche 924, 944, 968, and 928 models, supplied per metre for flexible installation and precise fitment.

This hose is engineered for safe and reliable fuel transfer within the fuel system, providing consistent flow between key components such as fuel pumps, filters, and injectors. Built to withstand fuel exposure and engine bay conditions, it ensures long-term durability and performance.

Fits:

  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • 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 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Sold per metre, this hose allows you to cut to the exact length required, making it ideal for maintenance, repair, or restoration of Porsche fuel systems.

Key Features

• 9.5mm internal diameter, 15.5mm outer diameter
• Suitable for Porsche 924, 944, 968, and 928
• Designed for fuel system applications
• Sold per metre for custom lengths
• Resistant to fuel and engine bay heat
• Flexible and durable construction
• OEM-style specification and performance

Function and Purpose

This fuel hose is a vital component of the fuel delivery system.

It helps to:
• Transport fuel safely between system components
• Maintain consistent fuel flow and pressure
• Ensure leak-free operation
• Support efficient engine performance
• Enable reliable fuel delivery under load

Why Replace Fuel Hoses

Fuel hoses degrade over time due to heat and fuel exposure.

Common issues include:
• Cracking or splitting
• Fuel leaks and safety risks
• Hardening and reduced flexibility
• Reduced fuel delivery efficiency

Replacing worn hoses ensures safe operation and restores optimal performance.



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

99918171650
99918171650

The product you are viewing cross references to these numbers
Special Order item
95135604706
Product Information
Product Information
Fuel Hose. Connects directly to the fuel filter.
porsche

Fits:
Porsche 944 1985-88
Porsche 944 2.7L 1989-91 Cars with Automatic transmission (M249)

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

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95135604706
95135604703
95135604706

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Special Order item
PCG209071C
Product Information
Product Information
Fuel hose, return.

porsche

Fits:
Porsche 924 1976-75 (not for Turbo / GT)
F 92-47100 288>>
F 92-49103 158>>
F 92-49400 051>>

Porsche 924 S 1986-88
Porsche 944 1982-1985

Click 'Zoom in' for large parts diagram.
Diagram ref no 22

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PCG209071C
PCG209071C
477209071E
477209071C
477209071A

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PCG209071C/1
Product Information
Product Information

Fuel Return Hose

High-quality replacement fuel return hose designed for Porsche 924, 924S, and 944 models.

This hose is a key component of the fuel system, responsible for returning excess fuel from the engine back to the fuel tank. By maintaining proper circulation and pressure balance, it ensures efficient fuel delivery and stable engine performance.

Fits:

  • Porsche 924 2.0L 1976-79
from Chassis number
F 92-47100 288>>
F 92-49103 158>>
F 92-49400 051>>
  • Porsche 924 2.0L 1980-85
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87

Diagram ref no 22

Manufactured to OEM specifications, this fuel return line offers precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of Porsche transaxle models.

Key Features

• Direct replacement fuel return hose
• Suitable for Porsche 924, 924S, and 944
• Maintains proper fuel circulation and pressure balance
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
• Ideal for fuel system maintenance and restoration

Function and Purpose

This hose is an essential part of the fuel injection system.

It helps to:

• Return excess fuel safely to the tank
• Maintain stable fuel pressure within the system
• Prevent overpressure in the fuel rail
• Support efficient fuel circulation

Why Replace Your Fuel Return Hose

Fuel hoses degrade over time due to heat, pressure, and fuel exposure.

Common issues include:

• Cracking or hardening of rubber
• Fuel leaks or seepage
• Pressure imbalance within the system
• Reduced engine performance or drivability

Replacing the hose restores safe and reliable fuel system operation.



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

PCG209071C
PCG209071C
477209071E
477209071C
477209071A

The product you are viewing cross references to these numbers
Special Order item
94435604804
Product Information
Product Information
Fuel hose.


Fits:
Porsche 924S 1986-88
Porsche 944 1982-85

Diagram ref no 9



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94435604804
94435604802
94435604804

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94435604804/1
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Product Information

Fuel Hose – Fuel Filter to Solid Fuel Pipes 

High-quality replacement fuel hose designed for Porsche 924S and 944 models.

This hose connects the fuel filter to the solid (hard) fuel lines, forming a critical link within the fuel delivery system. It ensures a secure and consistent transfer of fuel under pressure, supporting proper engine performance and reliability.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-85

Diagram ref no 15

Manufactured to OEM specifications, this fuel hose offers precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of Porsche transaxle fuel systems.

Key Features

• Direct replacement fuel hose (filter to hard line)
• Suitable for Porsche 924S and 944 models
• Ensures reliable fuel transfer from filter to fuel lines
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
• Ideal for fuel system maintenance and restoration

Function and Purpose

This hose is an essential component of the fuel system.

It helps to:

• Transfer filtered fuel to the solid fuel pipes
• Maintain stable fuel pressure and flow
• Ensure safe and efficient fuel delivery
• Support overall engine performance

Why Replace Your Fuel Hose

Fuel hoses deteriorate over time due to exposure to heat, pressure, and fuel.

Common issues include:

• Cracking or hardening of rubber
• Fuel leaks or seepage
• Poor fuel pressure or flow
• Increased risk of fuel system failure

Replacing the hose restores safe and reliable operation.



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

94435604804
94435604802
94435604804

The product you are viewing cross references to these numbers
Special Order item
94435655701
Product Information
Product Information
Fuel hose.


porsche

Fits:
Porsche 924 1976-79
Porsche 924S 1986-88
Porsche 944 1982-85

Click 'Zoom in' for large parts diagram.
Diagram ref no 26



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94435655701
94435655700
94435655701

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94411041303
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Product Information
Fuel line - runs from the fuel rail to the diaphragm damper. 

Fits:
Porsche 924 S 2.5L 1986-88

Porsche 944-2 2.5L 1985-88
Porsche 944 2.7L 1989 

Porsche 944 Turbo 2.5L 1986-91
Porsche 944 Turbo S 2.5L 1988 

Diagram ref. 11. 

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94411041303
94411041302
94411041303

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DISPLAYING 1 to 16 (of 37 products)
1 2 3
About Fuel Lines & Breather Hoses

Fuel Lines & Breather Hoses – Reliable Fuel Flow and Ventilation for Porsche Engines

Fuel lines and breather hoses are essential for maintaining safe, consistent, and efficient operation of your Porsche’s fuel and vapour management systems. The fuel lines transport petrol from the tank to the engine, while breather hoses manage pressure and vapour circulation within the fuel system, ensuring smooth refuelling and balanced performance.

At Design911, we supply a complete range of fuel lines, connectors, and breather hoses designed for long-lasting performance, accurate fitment, and durability under high-pressure and high-temperature conditions. Built from fuel-resistant rubber, reinforced composites, or stainless steel, each component ensures secure sealing, corrosion resistance, and reliable fuel delivery for both classic and modern Porsche vehicles.

Whether you’re servicing a classic 911, restoring a transaxle Porsche, or maintaining a performance 992, our manufacturer-quality components guarantee safe, efficient, and leak-free operation.

What Do Fuel Lines and Breather Hoses Do?

Fuel lines and breather hoses play crucial roles in maintaining a balanced and efficient fuel system.

Core Functions:

  • Fuel Lines: Safely transport pressurised fuel from the tank to the injectors or carburetors.
  • Breather Hoses: Equalise air pressure within the tank and prevent vapour lock or vacuum formation.
  • Vapour Management: Direct excess vapours back into the intake or carbon canister for emissions control.
  • System Integrity: Maintain proper sealing to avoid leaks, fumes, and performance loss.

A reliable fuel line and breather hose system is essential for optimal fuel delivery, safety, and emissions control.

Why Do Fuel Lines and Breather Hoses Fail?

Over time, these components are exposed to heat, vibration, and corrosive fuels, causing them to deteriorate.

Common Causes of Failure Include:

  • Cracking, hardening, or swelling due to ethanol-based fuels.
  • Internal corrosion or blockage from fuel contamination.
  • Age-related brittleness in rubber or plastic hoses.
  • Loose or leaking fittings reducing system pressure.       
  • External damage from abrasion or heat exposure.

When these parts fail, you may notice fuel odours, leaks, poor idling, or difficulty refuelling — all signs your Porsche’s fuel system needs attention.

Why Replace Fuel Lines and Hoses?

Replacing ageing or damaged lines and hoses ensures safe, efficient fuel flow and helps prevent leaks, vapour loss, and performance issues. Our precision-fit fuel lines and breather hoses are engineered to restore reliability while meeting modern material and performance standards.

Key Benefits:
  • Restores proper fuel flow and vapour control.
  • Prevents fuel leaks, odours, and emissions faults.
  • Improves safety and engine performance.
  • Constructed from modern, fuel-resistant materials.
  • Direct-fit installation for Porsche models across all generations.
  • Ideal for maintenance, restoration, and upgrades.

Proper maintenance ensures your Porsche’s fuel system remains clean, safe, and efficient — exactly as its performance heritage demands.

Highlights:
  • Comprehensive selection of Porsche fuel lines and breather hoses.
  • Precision-engineered for accurate fit and durability.
  • Resistant to ethanol, heat, and corrosion.
  • Supports stable fuel pressure and emissions control.
  • Compatible with classic and modern Porsche models.
  • Ideal for rebuilds, performance tuning, and preventive maintenance.

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