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Fuel Lines & Breather Hoses
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fuel Return Line
High-quality replacement fuel return line designed for Porsche 928 S4, 928 GT, and 928 GTS models.
This hose forms a vital part of the fuel system, 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 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Diagram ref no 10A
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 928 V8 fuel systems.
Key Features
• Direct replacement fuel return hose
• Suitable for Porsche 928 S4, GT, and GTS models
• 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 to the tank
• Maintain correct fuel pressure within the system
• Prevent fuel system overpressure
• Support efficient fuel circulation
Why Replace Your Fuel Return Line
Fuel hoses degrade over time due to heat, pressure, and fuel exposure.
Common issues include:
• Cracking or deterioration
• Fuel leaks or seepage
• Pressure imbalance in the fuel 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Related, superseded, cross reference or alternative numbers for comparison.
92811035910
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- 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
- 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
Fuel & Gearbox Oil Pipe Connector – M16
Sold each
High-quality M16 pipe connector designed for use in Porsche fuel and gearbox oil systems across multiple models including 924, 944, 928, and 964.
This connector provides a secure and reliable connection
between pipework within both fuel delivery and transmission lubrication
systems. Engineered to handle pressure, temperature, and fluid exposure, it
ensures leak-free performance and long-term durability in demanding
environments.
Fits:
Diagram ref no 27
This M16 connector
delivers precise fitment and dependable sealing, making it ideal for
maintenance, repair, or restoration projects.
Key Features
• M16 pipe connector for fuel and gearbox oil systems
• Suitable for Porsche 924, 944, 928, and 964
• Ensures secure, leak-free pipe connections
• Designed for fuel and transmission oil applications
• OEM-style fit and performance
• Durable construction for long-term reliability
Function and Purpose
This connector is an essential link within fuel and transmission systems.
It helps to:
• Join pipework securely under pressure
• Maintain proper sealing of fuel and oil circuits
• Prevent leaks and fluid loss
• Support reliable system performance
Why Replace Pipe Connectors
Over time, connectors can wear due to heat, vibration, and fluid exposure.
Common issues include:
• Thread wear or damage
• Oil or fuel leaks
• Poor sealing between connections
• Reduced system reliability
Replacing connectors ensures safe and efficient operation of both fuel and gearbox systems.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477209169
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- 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
- 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
Fuel & Gearbox Oil Pipe Connector – M16
Sold each
High-quality M16 pipe connector designed for use in Porsche fuel and gearbox oil systems across multiple models including 924, 944, 928, and 964.
This connector provides a secure and reliable connection
between pipework within both fuel delivery and transmission lubrication
systems. Engineered to handle pressure, temperature, and fluid exposure, it
ensures leak-free performance and long-term durability in demanding
environments.
Fits:
Diagram ref no 27
This M16 connector
delivers precise fitment and dependable sealing, making it ideal for
maintenance, repair, or restoration projects.
Key Features
• M16 pipe connector for fuel and gearbox oil systems
• Suitable for Porsche 924, 944, 928, and 964
• Ensures secure, leak-free pipe connections
• Designed for fuel and transmission oil applications
• OEM-style fit and performance
• Durable construction for long-term reliability
Function and Purpose
This connector is an essential link within fuel and transmission systems.
It helps to:
• Join pipework securely under pressure
• Maintain proper sealing of fuel and oil circuits
• Prevent leaks and fluid loss
• Support reliable system performance
Why Replace Pipe Connectors
Over time, connectors can wear due to heat, vibration, and fluid exposure.
Common issues include:
• Thread wear or damage
• Oil or fuel leaks
• Poor sealing between connections
• Reduced system reliability
Replacing connectors ensures safe and efficient operation of both fuel and gearbox systems.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477209169
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 928 1978-82 - US, Canada & Japan Only
Porsche 928 1983-95 - All Markets
Diagram ref. 15.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92820121902
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
Fuel Injector Hose Repair Kit – COHLINE Fuel Hose &
Clamp Set
Sold as a pair
High-quality fuel injector hose repair kit designed for Porsche 928 models, providing all essential components required to restore injector fuel line connections.
This comprehensive kit includes COHLINE fuel hoses, hose clamps, and protective sleeves, ensuring secure and leak-free connections between the fuel injectors and fuel system. It is designed to replace worn or degraded hoses and maintain correct fuel delivery performance.
Fits:
- Porsche 928S2 4.7L 1984-86
Diagram ref no 48
Manufactured to OEM standards, the included COHLINE fuel hoses are engineered for durability, fuel resistance, and long-term reliability under engine bay conditions.
A direct replacement solution, this injector hose repair kit is essential for maintaining fuel system safety, preventing leaks, and ensuring consistent engine performance.
Included in Set
• 2 x Hose clamps
• 2 x COHLINE fuel hoses
• 2 x Hose sleeves
Key Features
• Complete fuel injector hose repair kit for Porsche 928
• Includes high-quality COHLINE fuel hoses
• Designed for secure and leak-free fuel connections
• Ideal for injector hose replacement and refurbishment
• Fuel-resistant materials for long-term durability
• OEM-style fit and function
Function and Purpose
This repair kit restores the integrity of fuel injector hose connections.
It helps to:
• Maintain proper fuel pressure within the system
• Prevent fuel leaks at injector connections
• Ensure safe and reliable fuel delivery
• Support optimal engine performance
Why Replace Your Injector Hoses
Fuel hoses degrade over time due to heat, pressure, and fuel exposure.
Common issues include:
• Cracked or brittle hoses
• Fuel leaks at injector connections
• Reduced fuel pressure
• Increased safety risks within the engine bay
Replacing injector hoses is critical for both safety and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811090301
The product you are viewing cross references to these numbers
.jpg?width=197 "Repair Kit Fuel Injector Hose. Porsche 928 S2 4.7ltr - 92811090301 - PRSESV")
- Porsche 928S2 4.7L 1984-86
Fuel Injector Hose Repair Kit – COHLINE Fuel Hose &
Clamp Set
Sold as a pair
High-quality fuel injector hose repair kit designed for Porsche 928 models, providing all essential components required to restore injector fuel line connections.
This comprehensive kit includes COHLINE fuel hoses, hose clamps, and protective sleeves, ensuring secure and leak-free connections between the fuel injectors and fuel system. It is designed to replace worn or degraded hoses and maintain correct fuel delivery performance.
Fits:
- Porsche 928S2 4.7L 1984-86
Diagram ref no 48
Manufactured to OEM standards, the included COHLINE fuel hoses are engineered for durability, fuel resistance, and long-term reliability under engine bay conditions.
A direct replacement solution, this injector hose repair kit is essential for maintaining fuel system safety, preventing leaks, and ensuring consistent engine performance.
Included in Set
• 2 x Hose clamps
• 2 x COHLINE fuel hoses
• 2 x Hose sleeves
Key Features
• Complete fuel injector hose repair kit for Porsche 928
• Includes high-quality COHLINE fuel hoses
• Designed for secure and leak-free fuel connections
• Ideal for injector hose replacement and refurbishment
• Fuel-resistant materials for long-term durability
• OEM-style fit and function
Function and Purpose
This repair kit restores the integrity of fuel injector hose connections.
It helps to:
• Maintain proper fuel pressure within the system
• Prevent fuel leaks at injector connections
• Ensure safe and reliable fuel delivery
• Support optimal engine performance
Why Replace Your Injector Hoses
Fuel hoses degrade over time due to heat, pressure, and fuel exposure.
Common issues include:
• Cracked or brittle hoses
• Fuel leaks at injector connections
• Reduced fuel pressure
• Increased safety risks within the engine bay
Replacing injector hoses is critical for both safety and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811090301
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- 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 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- 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
- Porsche 356B 1959-63
- Porsche 912E 4CYL 1976
Bleed nipple cap for brake caliper and clutch slave cylinder
Fits:
Porsche 356B
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 944 - 1982 to 1989
Porsche 928 - 1978 to 1990
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135192712
The product you are viewing cross references to these numbers
- 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
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- 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 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
Fits:
Porsche 911 - 1970 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1997
Porsche 928 - 1983 to 1995
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90038400601
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 928 1983-95
Diagram ref. 25.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92835655101
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.
-
Fuel Tank & Parts
-
Fuel Filler Cap / Neck / Flap
-
Fuel Gauge / Level Sender
-
Fuel Filter and Fittings
-
Fuel Pumps
-
Pressure Valves / Sensors / Dampers / Regulators
-
Fuel Accumulator
-
Fuel Expansion Tank
-
Carbon Canister
-
Fuel Injectors
-
Fuel Carry Cans
-
Fuel Injection / Collection Rail
-
Fuel Distributor / Metering Head
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