Fuel Hose – Fuel Tank to Expansion Chamber. Porsche 911 1978-89  ❭  9991811895A

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Related, superseded, cross reference or alternative numbers for comparison.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

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