Fuel Line and Accessories

Fuel Line & Fuel Line Accessories - Resources & Information

Fuel lines are important for boats and outboard engines because they help to transport fuel from the fuel tank to the engine and ensure that the engine runs smoothly and efficiently. Additionally, the fittings and other accessories help secure fuel lines during operation and keep moisture out for smooth performance in aquatic environments.

PartsVu offers a complete selection of Fuel Line and Accessories from OEM manufacturers and trusted aftermarket suppliers. Whether you need Type A1 Marine Fuel Lines, 1/4 fuel line fittings, a 3/8 fuel tank grommet, a rubber fuel line repair kit, and much more, PartsVu has what you need to get the job done. 

Need help servicing your boat and outboard engine? PartsVu regularly publishes helpful how-to guides and other valuable maintenance information to help boaters service their outboard engines, boats, trailers, and more. Browse the PartsVu Xchange, our outboard maintenance blog, for a wide range of relevant topics and review the FAQ section below, covering everything you need to know about maintaining your boat in confidence.

Fuel Line and Accessories FAQ

Why are Fuel Line & Accessories so important for boats and outboard engines?

Properly functioning fuel lines and accessories are essential for the proper operation of a boat or outboard engine. If the fuel lines or accessories are damaged or not functioning properly, it can cause fuel leaks, engine performance problems, or even engine failure.

• Fuel lines are used to carry fuel from the fuel tank to the carburetor or fuel injection system of the engine. 
• What are fuel lines made of? Marine fuel lines are made of a flexible, durable material that is resistant to fuel, heat, and pressure, and are typically reinforced with a braid or other reinforcement to improve their strength and durability.
• Fuel line accessories include fittings, clamps, and connectors that are used to connect fuel lines to the fuel tank, engine, and other parts of the fuel system. These accessories help to ensure that the fuel lines are properly secured and sealed, and that fuel flows smoothly and without leaks.

Why are Fuel Tanks & Fuel Line so important for boats and outboard engines?

Some specific benefits of using fuel tanks and fuel lines include:

• Fuel storage: Fuel tanks provide a place to store the fuel needed to operate the boat or outboard engine. This can be especially important on boats, which may be used for extended periods of time and may not have easy access to fuel.
• Fuel delivery: Fuel lines transport the fuel from the fuel tank to the engine, allowing the engine to operate. They are typically made of fuel line material that are resistant to the corrosive effects of fuel, such as rubber or plastic, to ensure a reliable and long-lasting connection.
• Fuel management: Fuel tanks and boat gas hose can help the operator monitor and manage the fuel usage of the boat or outboard engine. For example, fuel gauges or fuel senders can be installed in the fuel tank to help the operator track the fuel level and plan for refueling.
• Safety: Properly designed and maintained fuel tanks and watercraft fuel lines can help prevent fuel leaks or spills, which can be dangerous and potentially cause fires or other accidents.

What are the most common fuel hose sizes?

The most common fuel hose sizes are typically measured in inches or millimeters and range from 1/4 inch to 3/4 inch in diameter. Some common fuel hose sizes include:

• 1/4 inch: This size is commonly used for small engines and equipment, as well as for fuel lines on small boats.
• 5/16 inch: This size is often used on larger engines and equipment, as well as on medium-sized boats.
• 3/8 inch: This size is commonly used on larger engines and equipment, as well as on larger boats.
• 1/2 inch: This size is often used on very large engines and equipment, as well as on larger boats with high fuel flow requirements.

PartsVu carries these common fuel line sizes, as well as other sizes such as 9 16 fuel hose, 5/32 fuel line, 3/16 fuel line, 5/8 fuel line, and 7/16 fuel line,

What's the difference between regular gas tank hose and diesel fuel tubing?

There are several differences between regular gas tank hose and diesel fuel tubing:

1. Material: Gas tank hose is typically made of rubber or a rubber-like synthetic material, while diesel fuel tubing is typically made of a more durable, heat-resistant material such as polyurethane or nylon.
2. Compatibility: Gas tank hose is designed to be used with gasoline, while diesel fuel tubing is designed to be used with diesel fuel. Using the wrong type of hose or tubing can result in performance issues or damage to the fuel system.
3. Pressure rating: Diesel fuel tubing is generally rated for higher pressures than gas tank hose, as diesel fuel is typically more viscous and requires more pressure to flow through the line.
4. Durability: Diesel fuel tubing is generally more durable and resistant to abrasion and punctures than gas tank hose, as it is designed to handle the more abrasive nature of diesel fuel.
5. Cost: Diesel fuel hoses are generally more expensive than gas tank hose due to its higher-quality materials and greater durability.

What's the best fuel line for outboard motor?

When selecting a fuel line for an outboard motor, it is important to choose a high-quality line that is specifically designed for use in the marine environment. Some factors to consider when selecting a fuel line for an outboard motor include:

1. Compatibility: Make sure to choose a fuel line that is compatible with the type of fuel you are using in your outboard motor. 
2. Durability: Look for a fuel line that is resistant to abrasion, cracking, and UV exposure, as it will be exposed to harsh conditions on the boat.
3. Pressure rating: Choose a fuel line that is rated for the appropriate pressure for your outboard motor. Consult your owner's manual or a qualified mechanic to determine the proper pressure rating for your specific motor.
4. Temperature rating: Consider the temperature range that the fuel line will be exposed to, and choose a line that is rated for those temperatures.
5. Size: Make sure to choose a fuel line that is the appropriate size for your outboard motor. A line that is too small may restrict fuel flow, while a line that is too large may allow fuel to slosh around and create a hazard.

There are a wide variety of fuel lines available on the market, and it can be challenging to determine which one is the best choice for your outboard motor. It is always best to consult your owner's manual or a qualified mechanic to determine the proper type of fuel line to use in your specific motor.

Why should I use clear fuel line on my boat?

There are several reasons why clear fuel line may be used on boats:

1. Visibility: Clear fuel line allows you to see the fuel flowing through the line, which can be helpful in diagnosing problems or verifying that the fuel is flowing properly.
2. Easy to inspect: Clear hose line makes it easy to visually inspect the line for any debris or contaminants that may be present in the fuel.
3. Durability: Clear fuel hose is typically made of a durable, UV-resistant material that is resistant to cracking or breaking due to exposure to sunlight or temperature fluctuations.
4. Compatibility: Clear fuel line is compatible with most fuels, including gasoline, diesel, and ethanol-blended fuels, making it a versatile choice for use on boats.
5. Ease of installation: Clear fuel line is generally easy to install and does not require any special tools or equipment.

Overall, clear fuel line can be a useful option for boats due to its visibility, durability, compatibility, and ease of installation. It is important to use a high-quality clear fuel line that is specifically designed for use in the marine environment to ensure that it can withstand the harsh conditions found on boats.

Is it easy to make your own fuel lines for boats?

Making your own fuel lines can be challenging, as it requires specialized knowledge and equipment. You will need to select the appropriate material and size of fuel line for your boat, and you will need to have the necessary tools and equipment to cut, bend, and attach the fuel line. In addition, you will need to follow proper safety procedures when working with fuel, as fuel is highly flammable and can be dangerous if it escapes into the engine compartment or leaks into the water.

What's the difference between fuel vapor hose vs fuel hose?

Fuel vapor hose and fuel hose are both types of hose that are used to transfer fuel in a vehicle or boat. However, they are designed for different purposes and have some key differences:

1. Fuel vapor hose: This type of hose is used to transfer fuel vapors from the fuel tank to the engine or the evaporative emission control system (EVAP). It is made of a porous material that allows fuel vapors to pass through, but not liquid fuel. Fuel vapor hose is typically smaller in diameter and more flexible than fuel hose.
2. Fuel hose: This type of hose is used to transfer liquid fuel from the fuel tank to the engine or other components of the fuel system. It is made of a non-porous material that is resistant to swelling, kinking, and hardening, and is able to withstand high pressure and temperatures. Fuel hose is typically larger in diameter and less flexible than fuel vapor hose.

What's the best way to fix outboard fuel line connector leaking for boats?

If you have a leaking outboard fuel line connector on your boat, here are some steps you can take to fix it:

1. Turn off the engine and fuel supply. Before you start any repairs, it is important to turn off the engine and fuel supply to ensure safety.
2. Locate the leak. Look for any visible signs of a leak, such as fuel stains or drips.
3. Clean the area. Use a clean cloth or rag to wipe away any dirt or debris from the area around the leak.
4. Repair or replace the connector. If the connector is damaged or worn, you may need to replace it. If the connector is in good condition, you can try tightening it or applying a fuel-safe sealant to seal the leak.
5. Test the repair. After making the repair, turn on the fuel supply and start the engine. Let it run for a few minutes and observe the fuel line for any signs of a leak. If the repair is successful, the leak should be fixed.

It is always best to consult with a marine professional if you are uncertain about how to fix a leaking fuel line connector on your boat. Using the wrong repair methods or materials can lead to further problems or make the leak worse.

Where can I learn how to winterize my fuel lines on my boat?

PartsVu has plenty of resources for everything you need to know about how to winterize fuel lines for your boat and all models of popular outboard motors. Start with the following guides and be sure to use the search bar to find plenty of other useful guides to maintain your boat in confidence:

1. Winterizing Mercury Outboard Motor—Mercury Marine Essential Maintenance
2. Winterizing Outboard Motor—Yamaha Essential Maintenance
3. Boat Winterization in South Texas?
4. How to Winterize a MerCruiser Sterndrive