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Fuel Lines & Breather Hoses
- 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 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Related, superseded, cross reference or alternative numbers for comparison.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 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- 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
The Porsche Fuel Pipe Connector is a genuine OEM connecting piece designed for the fuel delivery system in classic Porsche models, including the 924 and 944. This small but vital component links sections of fuel pipe or hose, ensuring a secure and leak-free connection within the fuel system.
Over time, connectors can weaken, corrode, or crack, leading to fuel leaks and loss of pressure. Replacing it with this OEM Porsche connector restores system integrity, prevents dangerous leaks, and ensures your engine receives the correct fuel pressure for smooth performance.
Fits:
What This Product Does:
It’s a small but essential connector in the fuel feed / fuel line system. It joins sections of fuel pipe or hose — often between the fuel pump, fuel filter, accumulator, or between pipe and hose segments.
Symptoms Of A Faulty Or Failing Fuel Pipe Connector:
If this connector is worn, damaged, or leaking, common symptoms will include:
Why Replacement Matters:
Even though it’s a small part, it’s critical:
Diagram Ref No 1A
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477209161
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
Fits:
Porsche 924S 1986-88
Porsche 944 1982-85
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435604114
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 924S & 944 Fuel Hose - Fuel Pump to Fuel Filter
Reliable Fuel Delivery for Classic Transaxle Porsche Models
The fuel hose from the fuel pump to the fuel filter is a critical component of the Porsche 924S and 944 fuel system. This hose transfers pressurised fuel directly from the fuel pump to the fuel filter, ensuring clean and consistent fuel supply to the engine.
Maintaining the integrity of this hose is essential for stable fuel pressure, smooth engine operation and overall vehicle safety.
Fits:
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
Diagram ref no 12
What This Fuel Hose Does
In the Porsche 924S and 944 fuel system, fuel is drawn from the tank by the electric fuel pump and pushed through a dedicated hose into the fuel filter. The fuel filter removes contaminants before fuel continues to the rail and injectors.
The fuel pump to filter hose is responsible for:
- Carrying pressurised fuel safely from pump to filter
- Maintaining consistent fuel pressure under load
- Preventing leaks in a high-pressure section of the system
- Supporting smooth engine idle and acceleration
If this hose fails, fuel delivery can become inconsistent or unsafe.
Why Fuel Hoses Fail on 924S and 944 Models
Fuel hoses on classic Porsche transaxle cars are often original or decades old. Over time, exposure to heat, vibration and modern ethanol-blended fuels can cause deterioration.
Common failure causes include:
- Age-related rubber hardening and cracking
- Internal breakdown from fuel permeation
- Swelling caused by ethanol content in modern fuels
- Heat cycling in the engine bay
- Abrasion against surrounding components
Because this hose operates under pressure, even minor cracks or weakness can result in leaks or pressure loss.
When You Should Replace This Fuel Hose
You should replace the fuel pump to fuel filter hose if you
notice:
- Visible cracks, splits or softness in the hose
- Fuel smell near the rear or underside of the vehicle
- Dampness or seepage around hose connections
- Hesitation or stumbling under acceleration
- Poor fuel pressure readings
- The hose appears original or aged on a classic 924S or 944
Preventative replacement is strongly recommended during fuel pump or fuel filter service, especially on vehicles over 20 years old.
Replacing this hose helps prevent fuel leaks, improves engine reliability and protects against potential fire risk.
Quality Porsche Fuel System Parts from Design911
At Design911, we supply high-quality replacement fuel hoses designed to meet OEM standards for classic Porsche models. This fuel hose ensures correct fitment, proper pressure handling and long-term durability.
Using the correct specification hose protects your fuel system, improves reliability and maintains safe vehicle operation.
Key Benefits at a Glance
- Direct replacement for Porsche part 94435604112
- Connects fuel pump to fuel filter securely
- Maintains stable fuel pressure
- Reduces risk of leaks and fuel system failure
- Suitable for Porsche 924S and 944
- Ideal for maintenance, restoration and preventative repair
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435604114
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
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
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 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 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 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 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 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
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 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 968 3.0L 1992-94
Fuel Tank Breather Hose – Tank to Filler
Neck
Sold per metre
High-quality fuel tank breather hose designed for Porsche 944 S2 Cabriolet, 944 turbo Cabriolet and 968 Cabriolet models,
connecting the fuel tank to the filler neck.
Fits:
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 968 3.0L 1992-94
Diagram ref no 39
This hose is a key part of the fuel tank ventilation system, allowing fuel vapours to flow safely while maintaining proper pressure within the tank. It ensures efficient fuel system operation and prevents vapour build-up during refuelling and driving.
Supplied per metre, this hose allows for precise replacement and routing, making it ideal for maintenance, repair, or restoration of Porsche Cabriolet fuel systems. Manufactured to OEM specifications for durability and correct fitment.
Key Features
• Fuel tank breather hose – tank to filler neck
• Suitable for Porsche 944 S2 Cabriolet and 968 Cabriolet
• Part number 94120171311
• Designed for fuel vapour and ventilation systems
• Sold per metre for custom lengths
• Flexible and durable construction
• OEM-style fit and performance
Function and Purpose
This hose is an essential component of the fuel system.
It helps to:
• Connect fuel tank to filler neck ventilation system
• Allow safe transfer of fuel vapours
• Maintain proper internal tank pressure
• Prevent vapour build-up during refuelling
• Support efficient fuel system operation
Why Replace Breather Hoses
Over time, breather hoses can degrade due to fuel vapours and environmental exposure.
Common issues include:
• Cracking or splitting
• Fuel vapour leaks
• Hardening and loss of flexibility
• Reduced ventilation efficiency
Replacing worn hoses ensures proper fuel system performance and safety.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94120171311
The product you are viewing cross references to these numbers
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 968 3.0L 1992-94
Fuel Tank Breather Hose – Tank to Filler
Neck
Sold per metre
High-quality fuel tank breather hose designed for Porsche 944 S2 Cabriolet, 944 turbo Cabriolet and 968 Cabriolet models,
connecting the fuel tank to the filler neck.
Fits:
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 968 3.0L 1992-94
Diagram ref no 39
This hose is a key part of the fuel tank ventilation system, allowing fuel vapours to flow safely while maintaining proper pressure within the tank. It ensures efficient fuel system operation and prevents vapour build-up during refuelling and driving.
Supplied per metre, this hose allows for precise replacement and routing, making it ideal for maintenance, repair, or restoration of Porsche Cabriolet fuel systems. Manufactured to OEM specifications for durability and correct fitment.
Key Features
• Fuel tank breather hose – tank to filler neck
• Suitable for Porsche 944 S2 Cabriolet and 968 Cabriolet
• Part number 94120171311
• Designed for fuel vapour and ventilation systems
• Sold per metre for custom lengths
• Flexible and durable construction
• OEM-style fit and performance
Function and Purpose
This hose is an essential component of the fuel system.
It helps to:
• Connect fuel tank to filler neck ventilation system
• Allow safe transfer of fuel vapours
• Maintain proper internal tank pressure
• Prevent vapour build-up during refuelling
• Support efficient fuel system operation
Why Replace Breather Hoses
Over time, breather hoses can degrade due to fuel vapours and environmental exposure.
Common issues include:
• Cracking or splitting
• Fuel vapour leaks
• Hardening and loss of flexibility
• Reduced ventilation efficiency
Replacing worn hoses ensures proper fuel system performance and safety.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94120171311
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

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
Fits:
Porsche 944 1985 - 1991
Porsche 968 1992 - 1995
Diagram ref no 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95135655701
The product you are viewing cross references to these numbers
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.