Fuel Filler Hose Buyer’s Guide
- The filler hose connects to the fuel fill cap inlet via the fuel filler neck to the fuel tank.
- There different filler hose materials you can find on the market, with rubber being the most common.
- Under straight fuel hoses are three subvariations that differ in the structure used in manufacturing the hoses: soft-wall, hard-wall, and flexible fuel filler hoses.
- Aside from rubber fuel filler neck hose filler hoses, manufacturers also make solid metal hoses for maximum strength and they come pre-bent.
- Some angled fuel filler hoses are made with rubber, which is a plus since their bends can be adjusted according to specifications.
- Since the fuel filler hose is crucial for delivering the fuel to the tank, damage can cause small amounts of fuel loss whenever you’re filling in at the gas station.
- Another thing to consider is the inner diameter of the hose you’re getting. You can find fuel hose with 1.125" inner diameter while among the largest you can find has 3” inner diameter.
- The aftermarket fuel tank filler hose replacements you can find on CarParts.com can cost you around $13 to $94 depending on the brand.
Despite the global goal of reducing carbon footprint by shifting to electric vehicles, more than 90% of cars we currently have today are still powered by either gasoline or diesel. Fuel is one of the most important commodities since the introduction of gasoline-powered cars.
For your car to run gasoline or diesel, it needs to travel from the fuel tank to the engine first. However, before the fuel gets to the tank, it needs to travel from the fuel fill cap inlet through a series of tubes and hoses. The hose that directs the fuel to the fuel tank is known as the fuel filler hose.
Having a bad fuel filler hose? This guide will help you discover what this hose is for, what happens if it goes bad, and how to find the perfect fit for your vehicle.
What is a fuel filler hose?
The fuel filler hose, as defined by the United States Environmental Protection Agency, is part of a larger system of hoses known as the fuel line. The filler hose connects to the fuel fill cap inlet via the fuel filler neck to the fuel tank. This hose is usually held in place by clamps that are tightened with screws. It also goes by the term fuel fill-pipe hose while some simply refer to it as fuel hose.
Different variations of fuel filler hoses
There different filler hose materials you can find on the market, with rubber being the most common. When in the market for sturdy solid filler hoses, you’ll find straight and pre-bent options. The structure depends on the fitting as required by the design of a certain vehicle model. Here are the common fuel filler variations you can find on the market if you’re looking for a replacement:
Straight fuel hoses
Under straight fuel hoses are three subvariations that differ in the structure used in manufacturing the hoses. These are the soft-wall, hard-wall, and flexible fuel filler hoses.
Soft-wall fuel filler hose
Technically, all three can be considered flexible fuel filler hoses, as they can be bent to conform with fitting restrictions. The thing with soft-wall filler hoses, however, is that they can only bend up to a certain degree. Soft-wall filler hoses are integrated with nylon cord reinforcement that enables it to safely expand and contract to fit narrow provisions.
If bent to extremes, the hose has the tendency to collapse, which is the last thing you want to happen as it will restrict fuel flow. Refer to the hose’s specifications when trying to bend it to avoid damage. The bending capability relies heavily on the inner diameter of the hose—the smaller the diameter, the larger room for bending.
Hard-wall or type A2 fuel filler hose
The material that sets hard-wall filler hoses apart from soft-wall hoses is steel wire. Instead of nylon, type A2 hoses are integrated with steel wires that increase its strength and resistance to pinching. However, this type of fuel hose does not expand nor contract when fitting on the filler neck or tank. This makes it difficult for one clamp to do the job. Instead, you’ll be needing at least 2 clamps to hold it in place.
Ultra-flexible fuel filler hose
This type of hose is designed to bend all the way to 90 degrees with full ease. Such hose is extremely flexible to fit in tight areas that require a short 90-degree bend. Flexible fuel hoses are also easy to install, as they can be clamped easily, negating the hassles of attaching to flared connection points.
Pre-bent or angle fuel filler hoses
Aside from rubber fuel filler neck hose filler hoses, manufacturers also make solid metal hoses for maximum strength. Since metal is very hard to bend, they are made pre-bent, which is also commonly referred to as elbow. There are different angle specifications for pre-bent fuel hoses, which is why most people prefer flexible straight fuel hoses.
If your vehicle demands more than one bend, you may use a hose joiner which you can clamp at the ends of the two angled hoses. Some angled fuel filler hoses are made with rubber, which is a plus since their bends can be adjusted according to specifications.
What happens if the fuel filler hose fails?
Since the fuel filler hose is crucial for delivering the fuel to the tank, damage can cause small amounts of fuel loss whenever you’re filling in at the gas station. Although you won’t feel the consequences right away, the loss becomes incremental in the long run. It can also cause fire hazards as the fuel is not safely making its way into the fuel tank. When it comes to the fuel system, going the extra mile is always a good thing.
Choosing the right fuel filler hose
Knowing the right material of fuel hose your car uses is one way of properly choosing the right fit for your car. Another thing to consider is the inner diameter of the hose you’re getting. You can find fuel hose with 1.125" inner diameter while among the largest you can find has 3” inner diameter. The varying sizes of fuel filler hoses on the market may affect fitting so make sure you have the right measurement before your purchase.
How much is an aftermarket fuel filler hose?
The aftermarket fuel tank filler hose replacements you can find on CarParts.com can cost you around $13 to $94 depending on the brand. Length and sizes vary depending on the car model a fuel filler hose is designed for.
For the correct fit, input the year, make, and model of your vehicle in the filter tab under the search menu. This will narrow down the list to all the compatible hoses for your specific vehicle model to minimize the error of buying the wrong part. You can buy a fuel filler hose as a single piece, in sets of two, or as part of a kit.
Finding the Best Fit Fuel Filler Hose
You'd think that shopping for a fuel filler hose would be a rather simple affair. After all, a hose is just a hose, right? Like all other components of a fine piece of engineering that an automobile is, a lot of care has to be given to choosing a good replacement. That is especially true for a fuel filler as fuel is the lifeblood that drives you-pun intended-forward.
Getting fit right
The first thing that needs to be considered is the fit. We're talking lengths and circumferences here. While the location and function of the fuel filler hose is the same in all vehicles, there are enough differences between the actual builds among makes and models to make this important. Get it wrong, and you will have wasted time and money.
There are two sources of information that you can tap into to get this right. The first is your vehicle's owner's manual. These often overlooked manuals hold the exact specifications of every component in your car. The second is the hose you currently have installed! Nothing helps in matching more than what is already on-hand.
After finally managing to get the fit right, there are still a few other things to consider. You see, not just any long piece of tubing will do to replace something as important as a fuel filler hose. The most important factor to then consider is temperature resistance. A good range to work with is -40 degrees to +210 degrees Fahrenheit-it should be able to withstand extreme cold and heat.
One last thing
This last bit is a funny one. Make sure you determine whether the fuel filler hose you need to replace is for the main or the auxiliary tank! Those are two different things.
Car Repair: Putting In a New Fuel Filler Hose
Fuel is such a costly investment in today's struggling economy that we can't ever afford to bleed off even a tiny drop to faulty hoses. The great thing about hoses, though, is that they are cheap and easy enough to replace. All you need are a couple of tools, some patience, a little effort, and this very simple and handy guide.
Difficulty level: Moderate
Stuff you will need:
- Replacement fuel filler hose kit
- Vehicle's owner's manual
- Screwdrivers-flat- and Torx-head
- A friend
Step 1: Disconnect the negative terminal of your battery, and allow it to sit for 30 minutes before starting any work to avoid any nasty electrical shocks.
Step 2: Remove any metallic objects or fire-generating devices from the area and from your person.
*Note* Working with and around fuel is very dangerous. While you really can't expect to find any Hollywood-type explosions, the prospect of burning up is danger enough.
Step 3: Using the owner's manual as a reference, locate the fuel filler neck. Generally, this is located in the fender well.
Step 4: Carefully position the gas cap towards the gas door, and the other end of the neck towards the gas tank.
Step 5: Have a friend hold the gas cap flush to the gas door-then carefully bolt the cap to the door using the Torx-head screwdriver.
Step 6: Reach into the fender well, and slowly slide the fuel filler hose out on top of the gas tank, and slide in the new fuel filler hose in its place.
*Note* Make sure that the hose clamp that came with your kit is securely around the fuel filler hose. As soon as it's securely around the gas tank, tighten down the hose clamp using a flat-head screwdriver.
Step 7: Reverse the installation steps to get your gas tank and door in the normal operational position.
Step 8: Verify that everything is secured properly, verifying against the diagrams in your manual.
Step 9: Reattach your battery and start your car to immediately test the success of the installation.