Mercedes Mullins
The Honda CB350 is a motorcycle that was first introduced in the 1960s. Over time, some parts of the CB350 may need to be replaced, including the fuel line. While the standard fuel line for the Honda CB350 is 3.5mm, some users have opted for a 5.5mm fuel line. A 5mm fuel line may be compatible with the Honda CB350, but it is important to consult a professional or refer to the manufacturer's specifications to ensure the correct size is used.
| Characteristics | Values |
|---|---|
| Fuel line size | 5.5mm |
| Brand | Honda |
| Fit | Honda CB350K |
| Length | 5 feet |
| Inner Diameter | 5.5mm |
| Outer Diameter | 10.3mm |
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What You'll Learn
The Honda CB350K uses a 5.5mm fuel line
The 5.5mm fuel line is a genuine Honda part, ensuring quality and longevity for your machine. It is important to use a quality fuel line to deliver fuel to the spark source effectively. While cheaper alternatives may work in the short term, they can harden and crack over time, causing issues.
The 5.5mm fuel line is also available in a 26-foot roll, which is convenient if you need a longer length. This size is also compatible with other motorcycle brands, including Kawasaki, Suzuki, and Yamaha.
When purchasing a fuel line, it is important to measure your fuel outlet to ensure you get the correct size. The Honda CB350K has a 5.5mm internal diameter and a 10.3mm external diameter fuel outlet.
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Honda fuel lines are available in 26-foot rolls
The 5.5mm Honda fuel line is the perfect fit for the stock petcocks on many Honda motorcycles from the 1960s to 1980s, and it comes with two clear fuel filters. This size is ideal if you want to avoid getting a fuel line that is too big or too small. The fuel line and filter kit is also available in a 5-foot length.
Honda also offers a smaller 3.5mm inner diameter and 7.5mm outer diameter fuel/drain line that is sold as a 10-foot roll. This smaller size is typically used on the brass fittings at the base of the carburetor (overflow lines) and as vent lines on many SOHC carburetors. The 3.5mm fuel line is compatible with various Honda motorcycle models, including the CB350.
Additionally, Water Cannon offers a Honda GX small engine power washer bulk fuel line with a 1/4" inner diameter and 7/16" outer diameter in a 25-foot roll.
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Honda fuel lines are also available in 5-foot lengths
Honda fuel lines are available in 5-foot lengths and are compatible with a range of motorcycles, including Honda, Kawasaki, Suzuki, and Yamaha. The 5.5mm inner diameter and 10.3mm outer diameter fuel lines are suitable for Honda CB350 models, among other Honda motorcycles.
The Honda fuel line is designed to deliver fuel efficiently and is made with quality materials to ensure longevity. It is recommended to use genuine Honda parts when rebuilding or upgrading your motorcycle to ensure optimal performance and durability.
The 5-foot length is ideal for those who need to replace their fuel line without having excess leftover. It is also convenient for those who are rebuilding multiple motorcycles or working on a project with a friend, as the length allows for a cost-effective purchase without wasting material.
The Honda fuel line is known for its superior quality, with users reporting that it is worth the extra cost compared to cheaper alternatives. It provides a perfect fit, ensuring tight connections and preventing leaks. The fuel line is also UV-resistant, making it suitable for use in sunny locations like California without the risk of cracking or discolouration.
In addition to the 5-foot length, the Honda fuel line is also available in longer rolls, such as 26 feet, providing flexibility for different projects and applications. The fuel line is compatible with various Honda models, including the CB500, CB550, and CB750, offering a universal solution for Honda motorcycle enthusiasts.
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Honda fuel lines are black in colour
The 5.5mm Honda fuel line has an inner diameter of 5.5mm and an outer diameter of 10.3mm. It is sold in a 5-foot length and includes two clear fuel filters. This size is recommended for those who want a fuel line that is not too big or too small for their Honda motorcycle.
The 3.5mm Honda fuel line, on the other hand, is typically used on the brass fittings at the base of the carburetor as overflow lines. It is also used as vent lines on many SOHC carburetors, which are the two lines that run up over the airbox. This fuel line has an inner diameter of 3.5mm and an outer diameter of 7.5mm. It is sold in a 10-foot length.
The 9.5mm Honda fuel line is mentioned in one source regarding its use on the CB750, but no further details are provided.
It is important to use a quality fuel line to ensure the efficient delivery of fuel to the spark source. While cheaper alternatives may be available, they may not offer the same longevity as a genuine Honda fuel line.
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Honda fuel lines are resistant to standard fuels
While cheaper alternatives may be tempting, they often do not offer the same level of durability and performance as the Honda fuel line. The use of inferior hoses can lead to issues such as cracking and discolouration, especially in regions with strong UV exposure like California. Therefore, it is essential to invest in a quality fuel line to ensure the longevity of your vehicle.
Additionally, Honda recommends using "Top Tier Detergent Gasolines" to prevent the buildup of deposits inside your engine and fuel system. These gasolines are designated as such due to their ability to meet new, voluntary standards and keep engines clean through rigorous testing. They do not contain MMT, a metallic additive that can create deposits in your engine and exhaust system.
It is also important to note that some conventional gasolines are blended with alcohol or ether compounds, creating "oxygenated fuels." While these fuels help reduce emissions, it is crucial to ensure that they meet the minimum octane rating requirement specified in your Owner's Manual before use.
In summary, Honda fuel lines, such as the 5.5mm option, are designed to be resistant to standard fuels. Their durability and performance are enhanced by the use of quality materials, making them a reliable choice for your vehicle.
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Frequently asked questions
No, you cannot use a 5mm fuel line on a CB350. The stock size fuel line for the Honda CB350K is 5.5mm.
A 5.5mm fuel line is the perfect size for the stock petcocks on many 60s, 70s, and 80s Hondas. A 5mm line may be too small and could cause issues with fuel delivery.
You can buy a 5.5mm fuel line for your Honda CB350K from Amazon, 4into1, and Carpy's Cafe Racers.
