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Fuel Lines & Breather Hoses

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DISPLAYING 17 to 29 (of 29 products)
1 2
Special Order item
96411041104
Product Information
Product Information
Fuel Supply Line.


Fits:
Porsche 964 C2 / C4 1989-94
Porsche 964 Carrera RS 3.6L 1992

This product supersedes Porsche's old part numbers:
- 96411041103

Diagram Ref No 21



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Related, superseded, cross reference or alternative numbers for comparison.

96411041104
96411041104
96411041103

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96411041104/1
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Fuel Line – Regulator to Fuel Rail

High-quality replacement fuel line designed for Porsche 964 models, connecting the fuel pressure regulator to the fuel rail.

This hose is a critical component of the fuel injection system, ensuring controlled fuel delivery under pressure to the fuel rail where it is distributed to the injectors. Maintaining consistent fuel pressure is essential for optimal engine performance, efficiency, and smooth drivability.

Fits:

  • 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

Diagram Ref No 21 

Manufactured to OEM specifications, this fuel line offers precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of Porsche 964 fuel systems.

Key Features

• Direct replacement fuel line (regulator to fuel rail)
• Suitable for Porsche 964 models
• Maintains consistent fuel pressure and delivery
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
• Ideal for fuel system maintenance and restoration

Function and Purpose

This fuel line is a vital part of the fuel injection system.

It helps to:

• Transfer fuel from the regulator to the fuel rail
• Maintain stable fuel pressure for injection
• Ensure efficient fuel delivery to injectors
• Support engine performance and drivability

Why Replace Your Fuel Line

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

Common issues include:

• Cracking or deterioration
• Fuel leaks or seepage
• Loss of fuel pressure
• Engine hesitation or poor performance

Replacing the line restores safe and reliable fuel system operation.

Diagram Ref No 21



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Related, superseded, cross reference or alternative numbers for comparison.

96411041104
96411041104
96411041103

The product you are viewing cross references to these numbers
Special Order item
96411041202
Product Information
Product Information
Fuel Supply Line.


Fits:
Porsche 964 C2 / C4 1989-94
Porsche 964 Carrera RS 3.6L 1992

Diagram Ref No 22



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

96411041202
96411041202

The product you are viewing cross references to these numbers
96411041202/1
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Product Information

Fuel Supply Hose – Regulator to Fuel Rail 

High-quality replacement fuel supply hose designed for Porsche 964 models, connecting the fuel pressure regulator to the fuel rail.

This hose plays a critical role in the fuel injection system by ensuring controlled fuel delivery under pressure to the fuel rail, where it is distributed to the injectors. Maintaining consistent fuel pressure is essential for engine performance, efficiency, and reliability.

Fits:

  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93  

Diagram Ref No 22

Manufactured to OEM specifications, this hose provides precise fitment along with excellent resistance to fuel, heat, and pressure—making it ideal for maintenance, repair, or restoration of Porsche 964 fuel systems.

Key Features

• Direct replacement fuel hose (regulator to fuel rail)
• Suitable for Porsche 964 models
• Maintains consistent fuel pressure and delivery
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
• Ideal for fuel system maintenance and restoration

Function and Purpose

This hose is a vital part of the fuel injection system.

It helps to:

• Transfer fuel from the regulator to the fuel rail
• Maintain stable fuel pressure for injection
• Ensure efficient fuel delivery to injectors
• Support engine performance and drivability

Why Replace Your Fuel Hose

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

Common issues include:

• Cracking or deterioration
• Fuel leaks or seepage
• Loss of fuel pressure
• 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.

96411041202
96411041202
96411041201

The product you are viewing cross references to these numbers
Special Order item
96411041301
Product Information
Product Information
Fuel Supply Line.


porsche

Fits:
Porsche 964 C2 / C4 1989-94
Porsche 964 Carrera RS 3.6L 1992

Click picture for large parts diagram.
Diagram Ref No 14.



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

96411041301
96411041300
96411041301

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Special Order item
96420158101
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Fuel tank Suction Hose for LHD Cars. Comes off In-Tank fuel filter.

porsche

Fits:
Porsche 964 >>1991 LHD Cars

Click 'Zoom in' for large parts diagram.
Diagram ref no 29

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96420158101
96420158101

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PCG51219802
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Product Information
Hose clip fuel pipe - 17x9mm
Sold each

porsche

Fits:
Porsche 911 - 1974 to 1983
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1997
Porsche 924 - 1980 to 1985
Porsche 944 - 1982 to 1985
Porsche 968 - 1992 to 1995

Click 'Zoom in' for large parts diagram.
Diagram ref no 6


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PCG51219802
PCG51219802
99951219802

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Special Order item
96420115300
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Product Information
Overflow hose for fuel filler neck.

porsche

Fits:
Porsche 911 1978-89
Porsche 964 1989-94
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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

96420115300
96420115300

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96420115300/1
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Overflow hose for fuel filler neck.
The overflow hose provides a vent path for fuel vapours and excess pressure from the fuel filler neck to the tank vent/evaporative system, preventing pressure buildup and aiding smooth refuelling without backflow or spills.

Fits:
Porsche 911 1978 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998

Diagram ref no 24

The hose fits between the fuel filler neck and the fuel tank vent/overflow outlet, allowing controlled relief of fuel vapours and pressure during refuelling and normal operation. A compromised or deteriorated hose can lead to fuel vapour leaks, poor venting, fuel smell at the rear of the vehicle, or difficulty refuelling due to trapped pressure.

This OE Match hose offers a direct replacement solution for restoration, maintenance, or repair when the original hose shows signs of age or damage.

Function:
  Ensures proper venting of fuel fumes and pressure from the filler neck
  Maintains correct fuel system breather operation
  Prevents fuel vapour leaks and associated odours
  Durable, fuel-resistant construction for long service life

The fuel filler overflow/vent hose plays a small but important role in maintaining proper fuel system behaviour. A cracked, hardened, or leaking hose can cause fuel vapour smells, trapped pressure that makes refuelling difficult, and potential environmental or safety issues. Replacing it with an OE Match hose restores correct venting and refuelling behaviour while helping keep the fuel system sealed and odour free.

When to replace:
  Visible cracking, swelling, or brittleness of the hose
  Noticeable fuel vapour smell near filler area
  Difficulty filling the tank (pressure backflow)
  During restoration or fuel system servicing
  If original hose shows age-related deterioration

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

96420115300
96420115300

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Special Order item
477209169
Product Information
Product Information

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
477209169

The product you are viewing cross references to these numbers
477209169/1
Product Information
Product Information

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
477209169

The product you are viewing cross references to these numbers
Special Order item
90135192712
Product Information
Product Information
Hose clip fuel line A9 x 18
Bleed nipple cap for brake caliper and clutch slave cylinder

porsche

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
90135192712
90135192710
69535152500
99970337240

The product you are viewing cross references to these numbers
Special Order item
90038400601
Product Information
Product Information
Tapping screw B4,8 x 13 - Multiple applications

porsche

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
90038400601
90018710402
90018710401

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DISPLAYING 17 to 29 (of 29 products)
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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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