Rubber Flexible Fuel Filler Neck Hose

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Rubber Flexible Fuel Filler Neck Hose

A fuel filler hose is a type of hose that connects a vehicle's fuel filler neck to the fuel tank, allowing fuel to be pumped into the tank from an external source, such as a gas pump. This hose is typically made of a durable and flexible rubber material, and it is designed to withstand exposure to fuel, heat, and other harsh conditions.

Fuel filler hoses come in a variety of sizes and shapes to fit different types of vehicles, and they may feature various fittings and connectors to ensure a secure and leak-free connection. They are essential components of a vehicle's fuel system, and they play a critical role in ensuring that fuel is safely and efficiently delivered to the tank.

Regular inspection and maintenance of the fuel filler hose are crucial to ensure the integrity and safety of the fuel system. Signs of wear or damage, such as cracks, leaks, or corrosion, should be addressed promptly to prevent fuel from spilling or leaking, which can pose a fire hazard and affect the performance of the vehicle. Replacing the fuel filler hose when necessary is important to maintain the efficiency and reliability of the fuel system and prevent costly repairs.

What is a fuel filler neck hose?
The large-bore hose connecting a vehicle's filler neck to the fuel tank. It is much larger than a fuel line - ours are 38mm, 51mm and 57mm - and it has a steel wire helix in the wall so it will not collapse or kink as it curves round the bodywork.

How is it constructed?
An NBR nitrile rubber inner tube for fuel resistance, a spiral steel wire helix for crush and kink resistance, and a tough CR chloroprene rubber outer layer for weathering and abrasion. It is built to SAE J30 R6 and has a wrapped finish.

What sizes and lengths do you supply?
38mm, 51mm and 57mm internal diameter, in 0.25, 0.5, 0.75 and 1 metre lengths. Measure the outside diameter of the filler neck and tank spigot and match to the hose bore. Buy a little longer than you think - trimming is easy, coming up short is not.

Is it E5 and E10 compatible?
Yes - the nitrile inner tube handles modern ethanol-blended petrol as well as diesel. That matters a great deal on older vehicles, where the original filler hose predates ethanol blending and is being attacked from the inside while looking passable from outside.

What are the symptoms of a failing filler hose?
A fuel smell around the rear of the vehicle, fuel staining or damp on the underside near the tank, and difficulty filling without the pump cutting out repeatedly. If you can smell fuel after filling up, the filler hose is the first thing to check.

Why does it need the wire helix?
Because a filler hose has to curve round bodywork in a confined wheel arch, and a large-bore hose without support would kink at the tightest point. A kinked filler hose restricts filling badly - the pump keeps cutting out - and creates a stress point that eventually splits.

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