Fuel Expansion Tank

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Related, superseded, cross reference or alternative numbers for comparison.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

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Related, superseded, cross reference or alternative numbers for comparison.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

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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

The product you are viewing cross references to these numbers

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

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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

The product you are viewing cross references to these numbers

Fuel bleeder expansion tank.

Fits:
Porsche 911 1969-73

Diagram ref no 41

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Related, superseded, cross reference or alternative numbers for comparison.

90120106222

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Fuel expansion tank small. 

Fits:
Porsche 911 1980 - 1989

Diagram ref no 8.

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Related, superseded, cross reference or alternative numbers for comparison.

91120138100

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Fuel Expansion Tank Small.
Maintain the integrity of your Porsche's fuel system with this OE Match Fuel Expansion Tank, manufactured as a direct replacement. Produced to OE-style specifications, this fuel expansion tank is designed to accommodate fuel expansion caused by temperature changes while helping to control fuel vapours within the evaporative emissions system. It ensures excess fuel has sufficient space to expand without placing unnecessary pressure on the fuel tank or associated components.
 
Fits:

• Porsche 911 1980-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50  

Diagram Ref No 8

Over time, the original expansion tank can become brittle, crack, or develop leaks due to age, fuel exposure, and repeated temperature cycles. A damaged tank can lead to fuel vapour leaks, fuel odours, and reduced efficiency of the evaporative emissions system. Replacing a worn or leaking expansion tank restores the correct operation of the fuel system while helping to maintain vehicle safety and reliability. This OE Match fuel expansion tank is ideal for routine maintenance, fuel system repairs, and Porsche restoration projects.  

What This Product Does:

• Accommodates fuel expansion caused by temperature changes.
• Helps regulate pressure within the fuel system.
• Reduces the risk of fuel vapour escaping.
• Supports the correct operation of the evaporative emissions system.
• Replaces cracked, leaking, or deteriorated original expansion tanks.
• Helps maintain a sealed and efficient fuel system.
• Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:

• Fuel smell around the vehicle.
• Cracks or damage to the expansion tank.
• Visible fuel or vapour leaks.
• Brittle or deteriorated plastic housing.
• Fuel system pressure irregularities.
• Damage discovered during fuel system servicing or restoration.
• Perished or leaking connections around the expansion tank.

Why Replacement Matters:

• The fuel expansion tank is an important component of the Porsche fuel and evaporative emissions system, providing space for fuel to expand safely as temperatures change while helping to prevent fuel vapour from escaping into the atmosphere. A cracked or leaking expansion tank can reduce the effectiveness of the fuel system, create fuel odours, and increase the risk of vapour leaks.
• Replacing a damaged expansion tank restores the correct operation of the fuel system, helps maintain proper pressure control, and contributes to safe, reliable vehicle operation. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Fuel Expansion Tank provides the correct fit, dependable performance, and long-lasting durability, making it an excellent choice for Porsche maintenance, repairs, and restoration projects.

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

91120138100

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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

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91120107300

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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.

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

The product you are viewing cross references to these numbers

Fuel Expansion Tank.



Fits:
Porsche 911 1974-89
Porsche 911 (930) Turbo 1975-77

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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91120107702

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Fuel Hose – Fuel Tank to Expansion Chamber 
Sold per metre

High-quality fuel hose designed for Porsche 911 models from 1978 to 1989, used to connect the fuel tank to the expansion chamber.

This hose plays a vital role in the fuel system by allowing safe transfer of fuel vapours and maintaining proper tank ventilation. It ensures correct pressure balance within the fuel tank and supports efficient operation of the fuel and emissions system.

Fits:

• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram ref no 5

Supplied per metre, this hose allows for custom length replacement, making it ideal for maintenance, repair, or restoration of classic Porsche 911 models. Manufactured to OEM specifications, it provides reliable performance and correct fitment.

Key Features

• Fuel hose for tank to expansion chamber connection
• Suitable for Porsche 911 (1978–1989)
• Part number 9991811895A
• Designed for fuel vapour and ventilation systems
• Sold per metre for custom lengths
• Flexible and durable construction
• OEM-style specification and performance

Function and Purpose

This hose is a key component in the fuel tank ventilation system.

It helps to:
• Connect fuel tank to expansion chamber
• Allow safe transfer of fuel vapours
• Maintain correct internal tank pressure
• Prevent fuel vapour build-up
• Support efficient fuel system operation

Why Replace Fuel Hoses

Over time, fuel hoses can degrade due to heat, age, and fuel exposure.

Common issues include:
• Cracking or splitting
• Fuel or vapour leaks
• Hardening and reduced flexibility
• Blocked or inefficient ventilation

Replacing worn hoses ensures safe operation and proper fuel system performance.

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

9991811895A

The product you are viewing cross references to these numbers

Fuel Hose – Fuel Tank to Expansion Chamber 
Sold per metre

High-quality fuel hose designed for Porsche 911 models from 1978 to 1989, used to connect the fuel tank to the expansion chamber.

This hose plays a vital role in the fuel system by allowing safe transfer of fuel vapours and maintaining proper tank ventilation. It ensures correct pressure balance within the fuel tank and supports efficient operation of the fuel and emissions system.

Fits:

• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram ref no 5

Supplied per metre, this hose allows for custom length replacement, making it ideal for maintenance, repair, or restoration of classic Porsche 911 models. Manufactured to OEM specifications, it provides reliable performance and correct fitment.

Key Features

• Fuel hose for tank to expansion chamber connection
• Suitable for Porsche 911 (1978–1989)
• Part number 9991811895A
• Designed for fuel vapour and ventilation systems
• Sold per metre for custom lengths
• Flexible and durable construction
• OEM-style specification and performance

Function and Purpose

This hose is a key component in the fuel tank ventilation system.

It helps to:
• Connect fuel tank to expansion chamber
• Allow safe transfer of fuel vapours
• Maintain correct internal tank pressure
• Prevent fuel vapour build-up
• Support efficient fuel system operation

Why Replace Fuel Hoses

Over time, fuel hoses can degrade due to heat, age, and fuel exposure.

Common issues include:
• Cracking or splitting
• Fuel or vapour leaks
• Hardening and reduced flexibility
• Blocked or inefficient ventilation

Replacing worn hoses ensures safe operation and proper fuel system performance.

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

9991811895A

The product you are viewing cross references to these numbers