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Porsche > 356 (1950-1965) > 356A 1955-59 > Engine Rebuild Parts > Fuel System Parts >

Fuel Lines & Breather Hoses

Fuel Lines & Breather Hoses

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DISPLAYING 1 to 3 (of 3 products)
Braided Fuel Hose (7.3mm ID, 13.5mm OD) - Sold by the Metre - for Porsche 356 / 911 Carrera / 912 / 914 - 99918003050, 9991800305A - 0895517313
1
Braided Fuel Hose (7.3mm ID, 13.5mm OD) - Sold by the Metre - for Porsche 356 / 911 Carrera / 912 / 914
9991800305A/1
Product Information
Product Information

Braided Fuel Hose (Sold by the Metre) - 7.3mm Internal Diameter / 13.5mm Outer Diameter. 

This high-quality braided fuel hose is designed for multiple uses within the fuel system of various vehicles. It offers extremely low fuel permeability, excellent heat resistance, and high flexibility, making it a reliable choice for demanding applications.

Fits:
Porsche 356 1950-65
Porsche 911 Carrera 1965-1977 
Porsche 912 1967-69
Porsche 914 1970-76 

Comparable to Porsche part number(s): 99918003050 & 9991800305A

Specifications:
Inner Diameter (ID): 7.3mm
Outer Diameter (OD): 13.5mm 
Material: FPM/ECO/AR/ECO (Type 3E) – Compliant with DIN 73379-1
Complies With: EU End-of-Life Vehicles Directive

NOTE: This product is not suitable for use in fuel tanks, or for gear and/or engine oils. Always follow the manufacturer's specifications regarding operating temperatures, especially for high-performance engines exposed to extreme heat.



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Related, superseded, cross reference or alternative numbers for comparison.

9991800305A
99918003050
9991800305A

The product you are viewing cross references to these numbers
Fuel System O-Ring. Porsche 356 A / 356 B / 356 C / 911 / 912 - 61610842300
2
Fuel System O-Ring. Porsche 356 A / 356 B / 356 C / 911 / 912
Special Order item
61610842300
Product Information
Product Information
Fuel System O-Ring.
The Genuine Porsche Fuel System O-Ring 61610842300 is a replacement sealing component designed to provide a secure, leak-resistant seal within the fuel system on compatible Porsche applications.

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 356A 1955-59
  • Porsche 356B 1959-63
  • Porsche 356C 1963-65  

Diagram Ref No 8

Although small, an O-ring performs an essential job. It seals the connection between mating fuel-system components, helping prevent liquid fuel and fuel vapour from escaping while maintaining the integrity of the fuel circuit.

Over time, continuous exposure to fuel, heat and repeated temperature cycles can cause the original O-ring to harden, flatten, crack or lose elasticity. It can also be damaged when components are removed or refitted. Replacing a deteriorated seal helps maintain a safe and reliable fuel-system connection.

What This Product Does:
The O-ring sits between mating components within the fuel system and is compressed during assembly to create a fuel-tight seal.

Its primary purpose is to prevent fuel or fuel vapour from escaping through the joint while allowing the fuel system to operate as intended.

A correctly functioning O-ring helps:

  • Prevent liquid fuel leakage
  • Reduce the escape of fuel vapour
  • Maintain a secure fuel-system connection
  • Maintain fuel-system integrity
  • Protect surrounding components from fuel contamination
  • Support safe and reliable vehicle operation

Because parts of the fuel system may operate under pressure, the condition and correct installation of sealing components are particularly important.

Symptoms Of Wear Or Failure:
A deteriorating O-ring may initially produce only a very small leak, but this should not be ignored.

Possible symptoms include:

  • Noticeable fuel smell
  • Fuel odour around the relevant connection
  • Visible fuel seepage
  • Dampness around the sealed joint
  • Fuel staining or residue
  • Persistent fuel vapour smell
  • Leakage after fuel-system servicing
  • Loss of sealing integrity around the connection

When removed and inspected, a failed O-ring may appear:

  • Hard or brittle
  • Cracked or split
  • Flattened from prolonged compression
  • Stretched
  • Swollen
  • Distorted
  • Cut or nicked
  • Permanently deformed

Any O-ring showing signs of deterioration or physical damage should be replaced.

Why Replacement Matters:
Fuel-system sealing components are safety-critical parts.

A failed O-ring can allow fuel or vapour to escape from the system. Besides causing fuel loss and unpleasant odours, leaking fuel can create a serious fire risk, particularly when it reaches hot surfaces or an ignition source.

Replacing a worn or damaged O-ring helps:

  • Restore a secure fuel-tight connection
  • Prevent fuel leakage
  • Reduce fuel vapour escape
  • Maintain fuel-system integrity
  • Protect surrounding components from contamination
  • Support safe and reliable vehicle operation

Any suspected fuel leak should be investigated and repaired promptly.



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

61610842300
61610842300

The product you are viewing cross references to these numbers
Hose clip fuel and air hose. Porsche 911 / 964 / 993 / 914 / 924 / 944 / 968 / 928 - PCG0235692, N 0235692, N0235692
3
Hose clip fuel and air hose. Porsche 911 / 964 / 993 / 914 / 924 / 944 / 968 / 928
Special Order item
PCG0235692
Product Information
Product Information
Hose clip fuel nd air hose. 

porsche

Fits:
Porsche 911 - 1974 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 914 - 1970 to 1976
Porsche 924 - 1980 to 1985
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995

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



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

PCG0235692
PCG0235692
N 0235692
N0235692

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 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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