Katerina Swanson
Yes, it is possible to extend a diesel fuel filler line. This can be done using a fuel filler tube extension, which is available in various sizes, such as 1-3/4 with a 9 vertical and 17 horizontal length. Alternatively, you can use a high-pressure fuel hose with clamps or weld an extension onto the filler neck. Some vehicles may also have fuel line quick connector adapters available, which can make the process easier. It is important to note that extending a diesel fuel filler line may require specific parts and expertise, so consulting a professional or a mechanic is recommended.
Diesel fuel filler line extension
| Characteristics | Values |
|---|---|
| Fuel filler neck extension | 9" vertical and 17" horizontal with 5/8" vent tube |
| Fuel filler hose | 135° Degree Elbows, 180° Degree Fuel Hose |
| Fuel filler hose couplers/joiners | 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/16", 1-7/8", 2", 2-1/4", 2-1/8", 2-1/2", 2-3/4", 2-3/8", 2-5/8", 2-7/8", 3" |
| Fuel line fittings | Connectors, Adapters, Check Valve, Bulkhead Fittings, Threaded Connectors |
| Fuel line connector adapters | 3/8 line |
| Fuel filler hose options | Marine Exhaust Hose, Marine Fuel/Coolant Hose |
| Fuel filler hose diameters | 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/16", 1-7/8", 2", 2-1/4", 2-1/8", 2-1/2", 2-3/4", 2-3/8", 2-5/8", 2-7/8", 3" |
| Fuel filler pipe/cap locations | Two tanks, rear fuel filler |
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What You'll Learn
Fuel filler pipe/cap locations
The fuel filler pipe and cap locations are important to consider when extending a diesel fuel filler line. Typically, the fuel filler cap is located on the opposite side of the vehicle from the exhaust pipe outlet if the vehicle has a single exhaust. This is a general rule of thumb, and there may be variations depending on the specific vehicle and its configuration.
In some cases, the fuel filler cap may be attached to a hatch that can be accessed by pulling a lever located in the floor in front of the driver's seat. This remote fuel tank cap opener provides convenient access to the fuel cap and tank.
When extending a diesel fuel filler line, it is essential to consider the routing of the fuel filler pipe. In some vehicles, the rear fuel filler pipe may run through the bed of the truck, as mentioned in the forums by owners of Ford trucks with flatbeds. This can create challenges when trying to build walls or structures on the flatbed frame, as the fuel filler pipe and cap can get in the way.
To address this issue, some truck owners have considered re-routing the inlet of the fuel filler pipe to a more convenient location. This can involve using an extended fuel hose or filler neck extension to relocate the filler cap to a different position, such as underneath the bed rail. However, it is important to note that simply adding an extension may not work, as there may be issues with the fuel pump or the need to drive up on a block of wood to access the fuel filler.
When extending or re-routing the fuel filler pipe, it is crucial to use the appropriate diameter hose and to ensure that the setup meets safety standards. Some forum users have suggested using a Continental Elite 58530 Fuel Fill/Marine Exhaust Hose for this purpose. Additionally, it is recommended to consult with professionals or experienced individuals who have worked on similar vehicles to ensure a safe and effective solution.
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Extending vs straightening filler hose
Extending the filler hose/neck
One option is to extend the filler hose/neck with a length of pipe or hose. This can be done with a piece of stainless steel exhaust tubing, or a length of pipe from a donor truck, for example. The cost of fuel filler neck hose is approximately $25 a foot, and a coupler is also needed to make it work. A weld may be required to attach the extension, so this option may be best for those with welding experience or access to a welder.
Straightening and re-routing the inlet
An alternative option is to straighten the filler hose and re-route the inlet. This can be done by cutting a length of pipe and using hose clamps to add it as an extender in the flex section. However, this method requires careful consideration of the inner and outer fuel hoses. It is also important to be mindful of the diameter of the hose when re-routing.
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Fuel filler hose couplers
Yes, you can extend a diesel fuel filler line. This is a common issue for diesel truck owners, especially those with flatbeds, who need to extend or reroute their filler lines.
There are a few ways to go about this. One option is to use a fuel filler hose coupler. These come in a variety of sizes, including:
- 1/4" or 6mm
- 5/16" or 8mm
- 3/8" or 10mm
- 1/2" or 13mm
- 5/8" or 16mm
- 3/4" or 19mm
- 1" or 25mm
- 1-1/8" or 29mm
- 1-1/4" or 32mm
- 1-3/8" or 35mm
- 1-1/2" or 38mm
- 1-5/8" or 41mm
- 1-3/4" or 44mm
- 1-7/8" or 48mm
- 2" or 51mm
- 2-1/4" or 57mm
- 2-1/2" or 64mm
When choosing a coupler, it's important to select one that matches the diameter of your existing fuel filler hose. You can also use hose reducers if you need to connect hoses with different diameters.
Another option for extending your diesel fuel filler line is to cut a length of pipe from a donor truck and use hose clamps to secure it to the existing hose. This method requires some creativity and mechanical skill, and it's important to ensure that the connection is secure and doesn't leak.
Additionally, you may be able to weld an extension onto the filler neck, but this requires welding expertise and access to the necessary equipment.
Finally, you can also purchase a new, longer fuel filler hose to replace the existing one. This option may be more expensive, but it can be a straightforward solution if you're not comfortable with mechanical modifications.
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Fuel filler hose connectors
Yes, you can extend a diesel fuel filler line. This can be done in several ways, depending on your vehicle's specific requirements and your personal preferences. One common method is to use a fuel filler hose and coupler to extend the line. These hoses come in various lengths and diameters, so it is important to select the correct size for your vehicle.
The fuel filler hose connectors, or couplers, are an essential component of the fuel system, ensuring a secure and leak-proof connection between the fuel filler neck and the fuel tank. They are designed to accommodate different diameters of hoses and pipes, providing a versatile solution for a range of vehicles.
When choosing a fuel filler hose connector, it is important to consider the diameter of your existing fuel line. Standard sizes range from 1/4" (6mm) to 3" (76mm) in diameter, with various increments in between. It is crucial to ensure that the connector matches the size of your fuel line to prevent leaks and ensure optimal fuel flow.
In addition to the diameter, the type of connector should also be considered. There are several types of fuel filler hose connectors available, including threaded connectors (SAE and metric), flexible rubber and nylon fuel line connectors, and quick connectors such as the Male Fuel Hose Quick Connectors. The choice of connector depends on the specific requirements of your vehicle's fuel system and the ease of installation.
Some vehicles may also require additional components, such as fuel filler neck buckets, housings, or doors, to ensure a secure and protected fuel filler system. These components provide a sealed environment for the fuel filler neck, preventing dust, debris, and moisture from entering the fuel tank.
When extending a diesel fuel filler line, it is important to follow safety precautions and ensure that all connections are secure and properly sealed. It is recommended to consult a professional or refer to vehicle-specific forums and resources for detailed instructions and guidance on extending your diesel fuel filler line.
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Fuel filler hose adapters
Yes, it is possible to extend a diesel fuel filler line. This can be done by using a fuel filler hose adapter, which is a flexible hose that connects the fuel filler neck to the fuel tank. These hoses are available in various lengths and diameters to fit different vehicles and applications.
There are a few things to keep in mind when extending a diesel fuel filler line. Firstly, it is important to use the correct diameter hose for your vehicle. The diameter of the hose should match the diameter of the fuel filler neck and the fuel tank inlet. Using a hose with the incorrect diameter can result in leaks or poor fuel flow.
Another consideration is the type of fuel filler hose adapter you need. There are several types of adapters available, including:
- Billet fuel filler necks: These are made from materials such as aluminium, brass, or stainless steel, and come in various diameters.
- Radiator/coolant filler neck adapters: These are used to connect the radiator or coolant system to the fuel filler hose. They come in a variety of sizes to fit different vehicles.
- Fuel line fittings and adapters: These include connectors, check valves, and bulkhead fittings, which are used to join the fuel filler hose to the fuel line.
When extending a diesel fuel filler line, it is also important to consider the routing of the hose. The hose should be routed in a way that prevents kinks or sharp bends, which can restrict fuel flow. It is also important to secure the hose properly to prevent damage or leaks.
In some cases, it may be necessary to weld an extension to the fuel filler neck. This is a more permanent solution and may require professional assistance. However, with the correct tools and knowledge, it is possible to extend a diesel fuel filler line to accommodate your needs.
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Frequently asked questions
Yes, you can extend a diesel fuel filler line.
There are a few ways to extend a diesel fuel filler line. One way is to use high-pressure fuel hose and good clamps. You can also use factory quick convert fuel line fittings to convert them to -6 AN and then use AN lines and fittings to your new tank.
One way to extend a diesel fuel filler line for a flatbed is to cut a length of pipe and use hose clamps to add it as an extender in the flex section. Another way is to mount the fillers underneath the bed rail.
You can extend OEM fuel lines by using fuel line quick connector adapters from AutoZone.
You can weld an extension onto the filler neck using tailpipe tubing.
