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Fuel Lines & Breather Hoses
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
The product you are viewing cross references to these numbers
- 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

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
Related, superseded, cross reference or alternative numbers for comparison.
477201393C
The product you are viewing cross references to these numbers
- 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
- 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
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95135604706
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
Fits:
Porsche 944 1985-91 Manual Transmission
Click 'Zoom in' for large parts diagram.
Diagram Ref No 17.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95135604110
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 944 1985-91 Automatic Transmission
Click 'Zoom in' for large parts diagram.
Diagram Ref No 17.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95135604108
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 924S 1986-88
Porsche 944 / 944 S / Turbo 1985-87
Porsche 944 S2 / Turbo / Turbo S 1989-91 COUPE
Porsche 968 1992-95 COUPE
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99959197540
The product you are viewing cross references to these numbers
- 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

Fits:
Porsche 944 S 1988-91 (Engine code M44.40 / .41)
Porsche 944 / 944 Turbo 1989-91 (Engine code M44.11 / .12 / .51 / .52)
F 94-KN404 559>>
F 95-KN101 327>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435696911
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 944-2 (Facelift) 2.5L 1985-88
Porsche 944-2 2.7L 1989
Porsche 944 S 2.5L 1987-88
Porsche 944 S2 3.0L 1989-91
Porsche 944 Turbo / S 2.5L 1986-91
Porsche 968 3.0L 1992 - Models Without Sports Suspension (PR 030)
Diagram ref. 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95135606103
The product you are viewing cross references to these numbers
- 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
Fuel Return Hose to Tank
High-quality replacement fuel return hose designed for Porsche 944 models, connecting the fuel system return line directly to the fuel tank.
This hose plays a critical role in the fuel system by safely
returning excess fuel from the engine back to the tank. It helps maintain
proper fuel circulation and stable pressure, ensuring efficient engine
operation and long-term reliability.
Fits:
- 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
- Models Without Sports Suspension (PR 030)
Diagram ref. 10
Manufactured to OEM specifications, this fuel return hose offers precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of Porsche 944 fuel systems.
Key Features
• Direct replacement fuel return hose (to tank)
• Suitable for Porsche 944 models
• Maintains proper fuel circulation and pressure balance
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
• Ideal for maintenance and restoration
Function and Purpose
This hose is an essential component of the fuel system.
It helps to:
• Return excess fuel safely to the tank
• Maintain stable fuel pressure
• Prevent fuel system overpressure
• Support efficient fuel circulation
Why Replace Your Fuel Return Hose
Fuel hoses degrade over time due to exposure to heat, pressure, and fuel.
Common issues include:
• Cracking or deterioration
• Fuel leaks or seepage
• Pressure imbalance within the system
• Reduced reliability and performance
Replacing the hose restores safe and consistent fuel system operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95135606103
The product you are viewing cross references to these numbers
- 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
Fuel Return Line – Fuel System Hose
High-quality replacement fuel return line designed for Porsche 944 models from 1987 to 1988.
This hose is a critical component of the fuel system,
responsible for returning excess fuel from the engine back to the fuel tank. It
ensures proper fuel circulation and maintains stable system pressure,
supporting efficient engine operation and long-term reliability.
Fits:
- Porsche 944S 2.5L 16V 1987-88
Diagram ref no 34
Manufactured to OEM specifications, this fuel return line provides precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of late Porsche 944 models.
Key Features
• Direct replacement fuel return line
• Suitable for Porsche 944 (1987–1988)
• Maintains proper fuel circulation and pressure balance
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
• Ideal for maintenance and restoration
Function and Purpose
This hose is an essential part of the fuel system.
It helps to:
• Return excess fuel safely to the tank
• Maintain stable fuel pressure
• Prevent overpressure within the system
• Support efficient fuel circulation
Why Replace Your Fuel Return Line
Fuel hoses degrade over time due to exposure to heat, pressure, and fuel.
Common issues include:
• Cracking or deterioration
• Fuel leaks or seepage
• Pressure imbalance within the system
• Reduced engine reliability and performance
Replacing the hose restores safe and consistent fuel system operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435602717
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
Fits:
Porsche 944 S 1987-88
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435602720
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
Fuel Return Line – Fuel System Hose
High-quality replacement fuel return line designed for Porsche 944 models from 1987 to 1988.
This hose is a critical component of the fuel system,
responsible for returning excess fuel from the engine back to the fuel tank. It
ensures proper fuel circulation and maintains stable system pressure,
supporting efficient engine operation and long-term reliability.
Fits:
- Porsche 944S 2.5L 16V 1987-88
Diagram ref no 33
Manufactured to OEM specifications, this fuel return line provides precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of late Porsche 944 models.
Key Features
• Direct replacement fuel return line
• Suitable for Porsche 944 (1987–1988)
• Maintains proper fuel circulation and pressure balance
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
• Ideal for maintenance and restoration
Function and Purpose
This hose is an essential part of the fuel system.
It helps to:
• Return excess fuel safely to the tank
• Maintain stable fuel pressure
• Prevent overpressure within the system
• Support efficient fuel circulation
Why Replace Your Fuel Return Line
Fuel hoses degrade over time due to exposure to heat, pressure, and fuel.
Common issues include:
• Cracking or deterioration
• Fuel leaks or seepage
• Pressure imbalance within the system
• Reduced engine reliability and performance
Replacing the hose restores safe and consistent fuel system operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435602720
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88

Fits:
Porsche 944 S 1988-91 (Engine code 4440 / 4441)
Porsche 944 / 944 Turbo 1989-91 (Engine code 4411 / 4412 / 4451 / 4452)
F 94-KN404 559>>
F 95-KN101 327>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435693711
The product you are viewing cross references to these numbers
- 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
Fuel Supply Hose
High-quality replacement fuel supply hose designed for Porsche 944 2.7ltr, 944 S2, and 944 turbo models.
This hose is a key component of the fuel delivery system,
responsible for supplying fuel under pressure between critical fuel system
components. It ensures consistent fuel flow, supporting efficient combustion,
engine performance, and reliability—especially in higher-output S2 and turbo
variants.
Fits:
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
Diagram ref no 32
Manufactured to OEM specifications, this fuel supply hose offers precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of Porsche 944 fuel systems.
Key Features
• Direct replacement fuel supply hose
• Suitable for Porsche 944 2.7L, S2 & Turbo models
• Maintains consistent fuel delivery under pressure
• Designed for both naturally aspirated and turbocharged systems
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
Function and Purpose
This hose is an essential part of the fuel system.
It helps to:
• Deliver fuel between key fuel system components
• Maintain stable fuel pressure for injection
• Ensure consistent fuel flow to the engine
• Support efficient engine performance and drivability
Why Replace Your Fuel Supply Hose
Fuel hoses degrade over time due to heat cycles, pressure, and fuel exposure.
Common issues include:
• Cracking or deterioration
• Fuel leaks or seepage
• Reduced fuel pressure or flow
• Engine hesitation or poor performance
Replacing the hose restores safe and reliable fuel system operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435602914
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91

Fits:
Porsche 944 S 1987-88
Porsche 944 S2
Porsche 944 Turbo 1989-91
Click 'Zoom in' for large parts diagram.
Diagram ref no 32
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435602914
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91

Fits:
Porsche 944 1985-91
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95135655700
The product you are viewing cross references to these numbers
- 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
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?
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.