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Porsche > 911 & 912 (1965-1989) > 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F) > Engine Rebuild Parts > Fuel System Parts >

Fuel Expansion Tank

Fuel Expansion Tank

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DISPLAYING 1 to 8 (of 8 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Related, superseded, cross reference or alternative numbers for comparison.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
Braided Fuel Hose (9.3mm ID, 15.3mm OD) - Sold by the Metre - for Porsche 911 Carrera & Turbo / 914 / 924 / 928 - N0203591, PCG020359A - 080895519315
1
Braided Fuel Hose (9.3mm ID, 15.3mm OD) - Sold by the Metre - for Porsche 911 Carrera & Turbo / 914 / 924 / 928
PCG020359A/1
Product Information
Product Information

Braided Fuel Hose (Sold by the Metre) - 9.3mm Internal Diameter / 15.3mm 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 911 Carrera 1965-89
Porsche 911 Turbo (930) 1975-89 
Porsche 914 1970-76
Porsche 924 1976-85
Porsche 928 1978-91

Comparable to Porsche part number(s): N0203591 & PCG020359A

Specifications:

Inner Diameter (ID): 9.3mm
Outer Diameter (OD): 15.3mm 
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.

PCG020359A
N0203591
PCG020359A

The product you are viewing cross references to these numbers
Fuel bleeder expansion tank set, Black. Porsche 911 1969-73 - 90120106222, 90120161922, 90120160322, 90120161822, 90120160222, 99951216002, 9970207450, 90120160124, N0235653 - 1615653110, EQ201600
2
Fuel bleeder expansion tank set, Black. Porsche 911 1969-73
90120106222/3
Product Information
Product Information
Fuel bleeder expansion tank set, BLACK.
The set includes: Fuel bleeder expansion tank, hoses, connecting pieces, clamps and rubber sleeve.

Fits:
Porsche 911 1969 - 1973

Diagram ref no 50, 51, 52, 53, 54, 55, 56, 57 and 58

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Related, superseded, cross reference or alternative numbers for comparison.

90120106222
90120106222
90120161922
90120160322
90120161822
90120160222
99951216002
9970207450
90120160124
N0235653

The product you are viewing cross references to these numbers
Fuel bleeder expansion tank, Black. Porsche 911 1969-73 - 90120106222, 847603069894 - URO-010752
2
Fuel bleeder expansion tank, Black. Porsche 911 1969-73
90120106222/1
Product Information
Product Information
Fuel bleeder expansion tank, BLACK.

Fits:
Porsche 911 1969-73

Diagram ref no 41

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Related, superseded, cross reference or alternative numbers for comparison.

90120106222
90120106222
847603069894

The product you are viewing cross references to these numbers
Fuel bleeder expansion tank, White. Porsche 911 1969-73 - 90120106222W, 90120106222, 847603069900 - URO-010753
2
Fuel bleeder expansion tank, White. Porsche 911 1969-73
90120106222/2
Product Information
Product Information

Fuel Bleeder Expansion Tank – White 

Restore the integrity and reliability of your classic Porsche fuel system with this Fuel Bleeder Expansion Tank in the correct white finish. This high-quality replacement tank is manufactured to OE specifications, ensuring excellent fitment, durability and dependable operation.

Fits:

  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Diagram ref no 41

The fuel bleeder expansion tank plays an important role within the vehicle's fuel venting system. It allows fuel vapours and expanding fuel to be safely managed as temperatures fluctuate, helping prevent fuel leakage, vapour loss and excessive pressure within the fuel tank. Over time, original plastic tanks can become brittle, crack or discolour, leading to fuel odours, leaks and poor fuel system performance.

Whether you're undertaking a concours-quality restoration or replacing an ageing original component, this OE Match expansion tank restores the factory appearance while ensuring the fuel venting system operates as intended.

What Does the Fuel Bleeder Expansion Tank Do?

The fuel bleeder expansion tank forms part of the Porsche 911 fuel evaporation and venting system.

Its purpose is to:

  • Collect expanding fuel during temperature changes.
  • Separate liquid fuel from fuel vapours.
  • Allow fuel vapours to vent correctly through the fuel system.
  • Prevent fuel overflow during cornering or tank expansion.
  • Reduce the risk of fuel leaks.
  • Help maintain safe fuel tank pressure.
  • Protect surrounding components from fuel contamination.

A properly functioning expansion tank is essential for safe and reliable operation of the fuel system.

Why Replace the Fuel Bleeder Expansion Tank?

After decades of exposure to petrol, heat and engine bay temperatures, the original plastic expansion tank commonly deteriorates.

Replacement is recommended if the tank shows signs of:

  • Cracks or splits.
  • Fuel leaks.
  • Strong fuel odours.
  • Brittle or weakened plastic.
  • UV or age-related deterioration.
  • Discolouration.
  • Damaged hose connections.
  • Previous repairs or sealants.

Replacing a worn expansion tank helps restore the fuel venting system while reducing the risk of fuel vapour leaks and unpleasant petrol smells.

Symptoms of a Failed Fuel Bleeder Expansion Tank

Common symptoms include:

  • Strong smell of petrol around the vehicle.
  • Fuel leaks in the front luggage compartment.
  • Dampness around vent hoses.
  • Visible cracks in the plastic tank.
  • Fuel overflow after filling.
  • Poor fuel venting.
  • Perished or loose hose connections.

If these symptoms are present, the expansion tank and associated hoses should be inspected immediately.

Benefits

Installing this OE Match Fuel Bleeder Expansion Tank provides:

  • Restores proper fuel venting.
  • Helps eliminate fuel vapour leaks.
  • Reduces petrol odours.
  • Prevents fuel overflow.
  • Maintains correct fuel tank pressure.
  • Restores original engine bay appearance.
  • Excellent fit and finish.
  • Ideal for restoration and routine maintenance.

Installation Recommendations

Professional installation is recommended when servicing the fuel system.

While replacing the expansion tank, inspect or replace:

  • Fuel vent hoses. Hose clips.
  • Rubber connectors.
  • Fuel filler neck hoses.
  • Fuel tank seals.
  • Fuel sender gasket.
  • Fuel tank breather lines.
  • Charcoal canister connections (where applicable).

Replacing ageing rubber hoses and seals at the same time helps restore the entire venting system and reduces the likelihood of future fuel leaks.



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

90120106222
90120106222W
90120106222
847603069900

The product you are viewing cross references to these numbers
Fuel bleeder expansion tank. Porsche 911 1969-73 - 90120106222, 847603069894
2
Fuel bleeder expansion tank. Porsche 911 1969-73
Special Order item
90120106222
Product Information
Product Information
Fuel bleeder expansion tank.

Fits:
Porsche 911 1969-73

Diagram ref no 41

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

90120106222
90120106222
847603069894

The product you are viewing cross references to these numbers
Fuel expansion tank. Porsche 911 1970-73 USA - 91120107300
2
Fuel expansion tank. Porsche 911 1970-73 USA
Special Order item
91120107300
Product Information
Product Information
Fuel expansion tank for USA cars

Fits:
US variant with fuel tank venting system
Porsche 911 T/E/S 1970-73 USA Cars
Porsche 911 T-K 1972-73 USA Cars

Diagram ref no 3

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

91120107300
91120107300

The product you are viewing cross references to these numbers
Fuel expansion tank. Porsche 911 70-73 USA - 91120107300, 847603070319 - URO-010756
2
Fuel expansion tank. Porsche 911 70-73 USA
91120107300/1
Product Information
Product Information

Fuel Expansion Tank – US Cars

Restore the correct operation of your classic Porsche fuel system with this Fuel Expansion Tank. Specifically designed for USA specification Porsche 911 models built between 1970 and 1973, this high-quality replacement is manufactured to OE specifications, ensuring excellent fitment, durability and reliable fuel vapour management.

Fits:
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Diagram ref no 3


The fuel expansion tank is an integral part of the evaporative emissions and fuel venting system. It allows fuel to safely expand as temperatures rise while separating liquid fuel from vapours before they are returned through the venting system. This helps prevent fuel overflow, reduces fuel odours and maintains safe pressure within the fuel tank.

Over time, the original expansion tank can become brittle, crack or suffer internal deterioration due to prolonged exposure to fuel, heat and age. Replacing a worn or damaged tank restores safe operation and helps preserve the originality of your Porsche 911.

What Does the Fuel Expansion Tank Do?

The fuel expansion tank is designed to safely manage expanding fuel and fuel vapours generated inside the fuel tank.

Its functions include:

  • Allowing fuel to expand safely during temperature changes.
  • Separating liquid fuel from fuel vapours.
  • Preventing fuel overflow.
  • Helping maintain correct fuel tank pressure.
  • Supporting the vehicle's evaporative emissions system.
  • Reducing fuel vapour loss.
  • Protecting surrounding components from fuel contamination.

A properly functioning expansion tank contributes to both vehicle safety and efficient fuel system operation.

Why Replace the Fuel Expansion Tank?

After decades of service, original plastic expansion tanks often deteriorate due to constant exposure to fuel vapours, heat cycles and ageing.

Replacement is recommended if the tank has:

  • Cracks or splits.
  • Fuel leaks.
  • Brittle plastic.
  • Fuel odours.
  • Damaged hose connections.
  • UV or age-related deterioration.
  • Internal contamination.
  • Signs of previous repairs.

Replacing the tank helps eliminate common fuel system issues while restoring reliable vapour management.

Symptoms of a Failing Fuel Expansion Tank

A deteriorating expansion tank may cause:

  • Strong petrol smells around the vehicle.
  • Fuel leaks in the front luggage compartment.
  • Dampness around vent hoses.
  • Fuel overflow after refuelling.
  • Cracked or discoloured plastic.
  • Poor fuel tank venting.
  • Perished hose connections.
  • Increased fuel vapour emissions.

If any of these symptoms are present, the expansion tank and associated vent hoses should be inspected and replaced where necessary.

Benefits

Installing this OE Match Fuel Expansion Tank provides:

  • Restores correct fuel vapour management.
  • Helps eliminate petrol odours.
  • Reduces the risk of fuel leaks.
  • Maintains safe fuel tank pressure.
  • Protects surrounding components.
  • Restores factory appearance.
  • Excellent fit and finish.
  • Ideal for concours restorations and routine servicing.

Installation Recommendations

Professional installation is recommended when servicing the fuel venting system.

While replacing the expansion tank, it is advisable to inspect or replace:

  • Fuel vent hoses.
  • Rubber connectors.
  • Hose clips.
  • Fuel filler neck hoses.
  • Fuel tank seals.
  • Fuel sender gasket.
  • Vapour recovery lines.
  • Charcoal canister hoses (USA models).
  • Fuel tank breather components.

Replacing ageing rubber components at the same time helps ensure a leak-free and reliable fuel system.



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

91120107300
91120107300
847603070319

The product you are viewing cross references to these numbers
DISPLAYING 1 to 8 (of 8 products)
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About Fuel Expansion Tank

Fuel Expansion Tanks – Reliable Fuel System Venting and Pressure Control for Porsche Models

A fuel expansion tank is a key component of your Porsche’s fuel system, designed to manage pressure changes caused by fuel temperature fluctuations. As fuel warms and expands, the expansion tank provides a controlled area for vapour and liquid fuel to move, preventing leaks, vapour lock, or tank deformation.

At Design911, we supply a wide range of precision-engineered replacement fuel expansion tanks designed to perform reliably under varying temperatures and pressures. Constructed from high-strength, fuel-resistant materials, these tanks ensure consistent pressure regulation and maintain proper system operation for both modern and classic Porsche vehicles.

Whether you’re maintaining a high-performance 911 or restoring a vintage 928, our high-quality fuel expansion tanks provide peace of mind through durability, fitment accuracy, and long-term reliability.

What Do Fuel Expansion Tanks Do?

The expansion tank acts as a safety and performance component within the fuel system. It collects and stores excess vapour and liquid fuel when tank pressure increases, preventing evaporation losses and maintaining correct fuel delivery pressure.

Core Functions:

  • Balances fuel vapour and liquid expansion under heat and altitude changes.
  • Prevents leaks and deformation in the main fuel tank.
  • Reduces vapour emissions, supporting EVAP and environmental systems.
  • Maintains stable fuel flow to ensure smooth performance.

A properly functioning fuel expansion tank keeps your Porsche running efficiently while protecting against fuel vapour emissions and performance inconsistencies.

Why Do Fuel Expansion Tanks Fail?

Fuel expansion tanks are constantly exposed to fuel vapour, heat cycles, and pressure variations. Over time, these conditions can cause the tank to crack, deform, or lose its sealing integrity.

Common Causes of Failure Include:

  • Cracking or warping from heat and fuel vapour pressure.
  • Deterioration of plastic or rubber materials due to age and fuel exposure.
  • Blocked vent lines or valves, creating excess internal pressure.
  • Corrosion or contamination, especially in older vehicles.
  • Damage during refuelling or servicing.

A damaged expansion tank can lead to fuel odours, leaks, inconsistent tank pressure, or check-engine warnings, especially in vehicles with EVAP monitoring systems.

Why Replace with Precision-Engineered Fuel Expansion Tanks?

Replacing a worn or cracked expansion tank ensures that your Porsche’s fuel system remains efficient, compliant, and leak-free. Precision-engineered components provide the correct venting characteristics and pressure control to match your vehicle’s performance demands.

Key Benefits:

  • Restores fuel pressure balance and system efficiency.
  • Prevents fuel odours and vapour leaks.
  • Improves cold and hot starting reliability.
  • Reduces emissions and maintains EVAP system function.
  • Constructed from high-grade, fuel-resistant materials.
  • Designed for perfect fitment on a wide range of Porsche models.

A quality replacement expansion tank not only protects your vehicle’s performance but also preserves fuel economy and environmental compliance.

Highlights:

  • Comprehensive range of fuel expansion tanks for Porsche models.
  • Manufactured from durable, heat- and fuel-resistant materials.
  • Ensures consistent fuel pressure and venting performance.
  • Direct-fit replacement for easy installation and reliability.
  • Essential for maintaining emission and fuel system integrity.
  • Perfect for classic and modern Porsche vehicles.

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