Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

Fuel Lines & Breather Hoses

Filter by brand
DISPLAYING 1 to 16 (of 29 products)
1 2
Special Order item
99913602702
Product Information
Product Information
Adapter For Fuel Line, M16x1.5.

Fits:
Porsche 964 Carrera 2 / 4 1989>>1993
Porsche 964 Carrera RS 3.6L 1991>>1993
Cars With Engine Codes:
6401 / 6402 / 6403

Diagram Ref No 15

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Related, superseded, cross reference or alternative numbers for comparison.

99913602702
99913602702

The product you are viewing cross references to these numbers
Special Order item
99959149840
Product Information
Product Information
Expanding nut. Porsche 911 / 964 / 993
Used for number plate holder and interior door top trim bracket

porsche

Fits:
Porsche 911 - 1979 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Click 'Zoom in' for large parts diagram.
Diagram ref no 5



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Related, superseded, cross reference or alternative numbers for comparison.

99959149840
99959149840

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
96435696101
Product Information
Product Information
Fuel line, Supply. Fuel line off of the fuel pump. This fuel line connects to the fuel pump and pumps fuel to the engine.

porsche

Fits:
For LHD cars
Porsche 964 C2 / C4 / RS / 965 3.3L 89-91

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

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Related, superseded, cross reference or alternative numbers for comparison.

96435696101
96435606102
96435696101

The product you are viewing cross references to these numbers
Special Order item
96411059502
Product Information
Product Information
Fuel Line.
The Porsche Fuel Line is a genuine OEM replacement component designed for Porsche 911 (964) models from 1989–1994. This precision-engineered line ensures safe, efficient, and leak-free fuel delivery within the L-Jetronic fuel injection system.

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

What This Product Does:

It’s a rigid or semi-rigid fuel feed line that carries fuel from the supply source (fuel pump / fuel filter) to the injector rails or part of the fuel injection system.
It must maintain fuel pressure and avoid leaks, kinks, or chafing. It’ll be routed along engine bay or firewall areas, often exposed to heat and vibration, so material durability is important.

Symptoms Of A Failing / Damaged Fuel Line:

  • Fuel smell in engine bay, particularly under load or acceleration.
  • Visible fuel leak or seepage along the line or fittings.
  • Poor performance, hesitation, or stumbling when accelerating, because fuel supply or pressure is not consistent.
  • Hard starting if fuel isn’t reaching injectors properly.
  • Engine Light or fault codes related to fuel pressure, injector supply, or lean mixture.
  • Spitting / sputtering if air is drawn into the fuel feed or fuel delivery is compromised.

Why Replacement Matters:
  • Restores safe, leak-free fuel delivery — fuel leaks are a fire hazard and dangerous.
  • Ensures correct fuel pressure for proper engine performance and driveability.
  • Prevents damage or stress to other fuel system components (fuel pump, regulator, injectors) that might struggle if supply is inconsistent.
  • Maintains reliability & prevents breakdowns — a failed fuel line could strand you or lead to more costly secondary damage.

Diagram Ref No 10



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

96411059502
96411059502
96411059501

The product you are viewing cross references to these numbers
96411059502/1
Product Information
Product Information
Fuel Line.
The Fuel Line is a replacement component designed for Porsche 911 (964) models from 1989–1994. This precision-engineered line ensures safe, efficient, and leak-free fuel delivery within the L-Jetronic fuel injection system.

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

What This Product Does:

It’s a rigid or semi-rigid fuel feed line that carries fuel from the supply source (fuel pump / fuel filter) to the injector rails or part of the fuel injection system.
It must maintain fuel pressure and avoid leaks, kinks, or chafing. It’ll be routed along engine bay or firewall areas, often exposed to heat and vibration, so material durability is important.

Symptoms Of A Failing / Damaged Fuel Line:

  • Fuel smell in engine bay, particularly under load or acceleration.
  • Visible fuel leak or seepage along the line or fittings.
  • Poor performance, hesitation, or stumbling when accelerating, because fuel supply or pressure is not consistent.
  • Hard starting if fuel isn’t reaching injectors properly.
  • Engine Light or fault codes related to fuel pressure, injector supply, or lean mixture.
  • Spitting / sputtering if air is drawn into the fuel feed or fuel delivery is compromised.

Why Replacement Matters:
  • Restores safe, leak-free fuel delivery — fuel leaks are a fire hazard and dangerous.
  • Ensures correct fuel pressure for proper engine performance and driveability.
  • Prevents damage or stress to other fuel system components (fuel pump, regulator, injectors) that might struggle if supply is inconsistent.
  • Maintains reliability & prevents breakdowns — a failed fuel line could strand you or lead to more costly secondary damage.

Diagram Ref No 10



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

96411059502
96411059502
96411059501

The product you are viewing cross references to these numbers
Special Order item
96435606106
Product Information
Product Information
Fuel line for LHD cars

porsche

Fts:
For LHD cars
Porsche 964 C2 / C4 / RS 1992-94
Porsche 965 Turbo 1992-94

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

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

96435606106
96435606106
96435606105
96435606103

The product you are viewing cross references to these numbers
Special Order item
96435659500
Product Information
Product Information
Fuel lines rubber mount.

porsche

Fits:
Porsche 964 1989-94 LHD cars with power assisted steering (M657)
Porsche 993 1994-98 LHD cars

Click 'Zoom in' for large parts diagram.
Diagram ref no 17

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

96435659500
96435659500

The product you are viewing cross references to these numbers
Special Order item
96435658307
Product Information
Product Information
Fuel return line.

Fits:
Porsche 964 

Diagram ref no 34

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

96435658307
96435658307
96435658305
96435658300

The product you are viewing cross references to these numbers
96435658307/1
Product Information
Product Information

Fuel Return Hose – Solid Pipe to Tank 

High-quality replacement fuel return hose designed for Porsche 964 models, connecting the solid fuel pipe to the fuel tank.

This hose is a critical part of the fuel system, responsible for returning excess fuel from the engine back to the tank. It ensures proper fuel circulation and maintains stable system pressure, supporting efficient engine performance and reliability.

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
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93

Diagram ref no 34

Manufactured to OEM specifications, this fuel return 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 return hose (pipe to tank)
• Suitable for Porsche 964 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 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.

96435658307
96435658307
96435658305
96435658300

The product you are viewing cross references to these numbers
Special Order item
96435658306
Product Information
Product Information
Fuel return line.

porsche

Fits:
Only for left-hand-drive vehicles
Porsche 964 1992-94
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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

96435658306
96435658306
96435658302

The product you are viewing cross references to these numbers
Special Order item
96435658403
Product Information
Product Information
Fuel return line.

porsche

Fits:
Only for right-hand-drive vehicles
Porsche 964 1992-94
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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

96435658403
96435658403
96435658402
96435658401

The product you are viewing cross references to these numbers
Special Order item
96435636703
Product Information
Product Information
Fuel return line.

porsche

Fits:
Porsche 964 1989-94 LHD cars

Click 'Zoom in' for large parts diagram.
Diagram ref no 23

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

96435636703
96435636703
96435636702

The product you are viewing cross references to these numbers
Special Order item
96411041500
Product Information
Product Information
Fuel Return Line.

 
porsche

Fits:
Porsche 964 C2 / C4 1989-94
Porsche 964 Carrera RS 3.6L 1992 (M657 - cars with power assisted steering)

Click 'Zoom in' for large parts diagram.
Diagram ref no 9.



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

96411041500
96411041500

The product you are viewing cross references to these numbers
Special Order item
96435636801
Product Information
Product Information
Fuel return line for RHD cars

porsche

Fits:
For RHD cars only
Porsche 964 C2 / C4 1990-94
Porsche 964 Carrera RS 1992-92
Porsche 964 Turbo 1991-94

Click 'Zoom in' for large parts diagram.
Diagram ref no 23

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

96435636801
96435636801
96435636800

The product you are viewing cross references to these numbers
Special Order item
96435606204
Product Information
Product Information
Fuel Supply Line, RHD.
Ensure reliable and safe fuel delivery in your Porsche with this genuine OEM fuel line. Designed for the Porsche 911 (964 series) and compatible models, this line is built to Porsche’s specification, delivering correct flow and pressure under demanding conditions. Whether it’s an aged original being replaced, or you’re refreshing your fuel-system as part of a restoration, this line is the correct direct replacement.
For Right Hand Drive Cars ONLY!

Fits:
  • Porsche 964 (911) C2 1989-91
  • Porsche 964 (911) C4 1989-91

Diagram Ref No 12

What This Product Does:

  • This fuel line serves as a supply / delivery line in the fuel system of the vehicle — it carries fuel (often from the tank or pump assembly) to a required downstream point (for example to injectors, filter, or engine compartment) under appropriate pressure and flow conditions.
  • Because it is an OEM-engineered line, the material, routing, fittings, and mounting clips are designed to match Porsche’s specification of that era — ensuring correct pressure resistance, vibration resistance, fuel type compatibility (petrol, possibly lead-free or additives), and correct safety margins.
  • The correct fuel line helps maintain fuel delivery without leaks, maintains correct flow/pressure, prevents vaporisation or fuel starvation, and helps ensure safe and reliable engine operation.

Symptoms And When To Replace:
  • Fuel smell or visible leak: Any aroma of petrol around the engine bay or underside, or visible wetness on or around the line’s fittings.
  • Cracks, bulges or deterioration of the line: Over time hoses/lines degrade from heat/vibration/fuel exposure. If you see exterior damage or soft spots, it’s a red flag.
  • Fuel pressure issues: If the fuel delivery is erratic, engine sputters under load or you suspect a drop in supply, the line or its fittings might be compromised.
  • Hard starts or hesitation under acceleration: Especially in high-demand situations the supply line may fail to deliver properly.
  • Vehicle overhaul or restoration: If the car is older and the original fuel system components are aged, installing a new line is a preventative measure.

Why Replacement Matters:
  • Safety: Fuel lines operate under pressure and handle flammable fuel. A failure can lead to leaks, fire risk or engine shutdown, replacing the line ensures design safety margins.
  • Performance & reliability: Proper line ensures correct fuel supply, no pressure drop, no vapor lock or starvation issues which can degrade performance or lead to engine damage.



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

96435606204
96435606204
96435606201

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 29 products)
1 2
Also found on these pages
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.

You may also like
Popular Models