4 Sizes Petrol Fuel Line Hose Set for Strimmers & Chainsaws

Keep your petrol-powered garden equipment running reliably with this 4 Sizes Petrol Fuel Line Hose Set, designed for a wide range of small 2-stroke engines.

Ideal for replacing old, cracked, hardened or leaking fuel pipe, this assorted hose set gives you four commonly used sizes in one convenient pack. The different internal and external diameters make it easier to match fuel tank outlets, carburettor connections, primer bulbs, fuel filters and return lines on compatible equipment.

This type of fuel tubing is widely used with petrol strimmers, chainsaws, hedge trimmers, brush cutters, leaf blowers, lawn mowers and other small-engine garden machinery. Current UK sets commonly include 2mm × 3.5mm, 2.5mm × 5mm, 3mm × 5mm and 3mm × 6mm hose sizes, measured as inner diameter × outer diameter.

The flexible fuel-resistant tubing can be cut to the required length, making it a practical spare for home repairs, workshop maintenance and servicing older garden tools.

Key Features

• Set of 4 different fuel hose sizes
• Designed for petrol-powered small engines
• Suitable for compatible 2-stroke machinery
• Ideal for strimmers and grass trimmers
• Suitable for chainsaws
• Useful for hedge trimmers and brush cutters
• Can be used with leaf blowers
• Suitable for selected lawn mowers and small engines
• Flexible fuel-line construction
• Helps replace brittle, cracked or leaking hose
• Can be cut to required length
• Useful for tank-to-carburettor connections
• Suitable for primer return lines where correctly sized
• Suitable for fuel-filter connections
• Resistant to petrol and oil where supplier-rated
• Compact workshop and repair spare

Product Specifications

Product Type: Small Engine Petrol Fuel Line Hose Set
Quantity: 4 Fuel Hoses
Common Size 1: 2mm ID × 3.5mm OD
Common Size 2: 2.5mm ID × 5mm OD
Common Size 3: 3mm ID × 5mm OD
Common Size 4: 3mm ID × 6mm OD
Material: PU / PVC / Tygon-Type Polymer depending on supplier version
Colour: Commonly Transparent Yellow
Fuel Type: Petrol / 2-Stroke Fuel Mix where rated
Oil Resistance: Yes, where supplier-rated
Application: Small Petrol Engines
Installation: Push-On Fuel Hose
Length: Depends on selected product variation
Cut to Size: Yes

Matching UK listings use these same four common dimensions for small-engine fuel-line sets.

Why Choose This 4 Sizes Petrol Fuel Line Hose Set?

Four Common Sizes in One Pack

Small engines do not all use the same fuel-line diameter.

A chainsaw may require one size for the carburettor feed and a different size for the primer return line, while another machine may use a different tank fitting altogether.

This assortment gives you four common sizes, helping reduce the chance of having to buy several separate fuel pipes.

Ideal for Small 2-Stroke Engines

Current UK product listings describe these fuel lines as suitable for a wide range of small 2-cycle / 2-stroke engines.

Typical applications include:

• Chainsaws
• Strimmers
• Grass trimmers
• Hedge trimmers
• Brush cutters
• Leaf blowers
• Lawn mowers
• Pressure washers
• Small generators
• Other compatible petrol garden tools

Useful Replacement for Old Fuel Pipe

Fuel hose becomes less reliable as it ages.

Signs that replacement may be needed include:

• Cracking
• Hardening
• Splitting
• Fuel leakage
• Swelling
• Brittle tubing
• Poor fit on carburettor connections
• Loose fuel-filter hoses
• Air leaks

Replacing damaged tubing with the correct fuel-resistant line can help restore a more reliable fuel supply.

Flexible and Easy to Route

Small-engine compartments are often compact.

Flexible tubing makes it easier to route the fuel line between the tank and carburettor without unnecessary sharp bends.

A current UK small-engine workshop pack describes this type of tubing as flexible, petrol-resistant and suitable for feed and return lines on chainsaws, brushcutters, hedge trimmers and other equipment.

Cut to the Length You Need

Fuel pipe is generally supplied in straight lengths that can be trimmed for the specific machine.

This makes it useful for multiple repairs or different types of equipment.

Always leave enough hose for natural routing without stretching it tightly between components.

Included Fuel Hose Sizes

2mm ID × 3.5mm OD

A small-bore fuel line suitable for compatible tank feeds, carburettor connections or return lines.

2.5mm ID × 5mm OD

A slightly larger option commonly included in universal small-engine fuel hose kits.

3mm ID × 5mm OD

A common flexible fuel-line size used on various petrol-powered garden tools.

3mm ID × 6mm OD

A thicker-wall 3mm internal diameter option for compatible fittings.

These are four of the most common sizes sold together in UK small-engine fuel-line kits.

What Does ID × OD Mean?

Fuel tubing is normally described using:

ID = Internal Diameter
The inside opening of the hose.

OD = Outer Diameter
The overall outside width of the tubing.

For example:

2mm × 3.5mm means:

• 2mm internal diameter
• 3.5mm external diameter

Choosing the correct ID is especially important because it determines how tightly the hose fits onto the fuel fitting.

Compatible Equipment

Petrol Strimmers

Suitable for replacing compatible fuel feed or primer lines on many petrol grass trimmers.

Chainsaws

Useful for tank-to-carburettor lines, fuel-filter hoses and return lines where the size matches the machine.

Hedge Trimmers

Suitable for many petrol-powered hedge trimmer fuel systems.

Brush Cutters

Can be used to replace compatible flexible fuel pipe in many small 2-stroke brush cutters.

Leaf Blowers

Widely used on small petrol leaf blower engines.

Lawn Mowers

Certain small petrol mowers use similar flexible fuel tubing, although the required diameter should always be checked first.

Matching UK sets are marketed for chainsaws, blowers, trimmers, brush cutters and lawn mowers.

Suitable Fuel Types

Petrol

The tubing is designed for compatible petrol fuel-line applications.

2-Stroke Premix

Tygon-type small-engine fuel lines are commonly rated for unleaded petrol and 2-stroke fuel mix.

Oil

Many matching PU/Tygon-style hoses are described as oil and fuel resistant.

Exact chemical compatibility depends on your supplied material.

Important E10 Fuel Information

Do not automatically describe this product as E10 compatible.

One UK listing for a near-identical 4-size PVC fuel hose set specifically states “Not Suitable for E10 Fuel”. Another similar set states that it is not suitable for fuel containing more than 10% ethanol.

Therefore, unless your supplier specifically confirms E10 compatibility, the safer WooCommerce wording is:

Suitable for petrol and 2-stroke fuel applications where compatible with the hose material. Check ethanol compatibility before use.

PU vs PVC Fuel Hose

This type of product is sold in different materials.

PU / Polyurethane

Some current UK listings describe the tubing as polyurethane, with resistance to petrol, oil, corrosion, swelling and hardening.

PVC

Other near-identical products are listed as PVC.

Because the appearance can be very similar, do not claim an exact material unless your supplier confirms it.

How to Choose the Correct Fuel Line

Check the Existing Hose

Measure both the internal and external diameter if possible.

Check the Fuel Fitting

The hose should fit securely onto the barb or carburettor fitting.

Do Not Use an Oversized Pipe

A hose that is too loose may leak or draw air into the fuel system.

Do Not Force an Undersized Hose

Excessive stretching can weaken or split the tubing.

Compare With the Old Fuel Line

When possible, use the removed hose as a reference.

How to Replace Small Engine Fuel Hose

Step 1 – Switch Off the Machine

Allow the engine to cool completely.

Step 2 – Drain or Control the Fuel

Work safely and prevent petrol from spilling.

Step 3 – Remove the Old Pipe

Carefully disconnect the old fuel line from the carburettor, primer bulb or tank fitting.

Step 4 – Select the Correct Size

Compare the new tubing to the old line and fittings.

Step 5 – Cut to Length

Cut the hose cleanly to the required length.

Step 6 – Fit the New Pipe

Push the tubing fully onto the correct connection.

Step 7 – Check Routing

Make sure the hose is not:

• Kinked
• Crushed
• Twisted
• Touching hot engine parts
• Rubbing against sharp surfaces

Step 8 – Inspect for Leaks

Add fuel and inspect the system carefully before starting the machine.

Why Fuel Line Condition Matters

The fuel pipe forms an important part of the engine’s fuel-delivery system.

A damaged hose can potentially cause:

• Fuel leakage
• Air entering the fuel system
• Difficult starting
• Poor engine running
• Fuel starvation
• Safety risks from leaking petrol

Replacing deteriorated pipe early is usually better than waiting for it to fail completely.

What’s Included?

Each pack typically includes:

• 1 x 2mm ID × 3.5mm OD Fuel Hose
• 1 x 2.5mm ID × 5mm OD Fuel Hose
• 1 x 3mm ID × 5mm OD Fuel Hose
• 1 x 3mm ID × 6mm OD Fuel Hose

Exact hose length depends on the product variation you stock.

Fuel filters, primer bulbs, clips and tools are not included unless specifically stated.

Safety Information

Petrol is highly flammable, so fuel-system repairs must be carried out carefully.

• Switch the engine off before working on the fuel system.
• Allow the machine to cool fully.
• Work in a well-ventilated area.
• Keep petrol away from flames and sparks.
• Do not smoke while carrying out fuel repairs.
• Check the hose is suitable for the fuel being used.
• Do not assume E10 compatibility unless confirmed.
• Use the correct internal diameter.
• Do not use damaged tubing.
• Keep fuel hose away from hot exhaust parts.
• Make sure connections are secure.
• Check carefully for leaks after installation.
• Never operate machinery with a known fuel leak.
• Dispose of old fuel and contaminated materials responsibly.
• If unsure, have the machine repaired by a qualified technician.

Frequently Asked Questions

What sizes are included?

A common 4-size set contains:

• 2mm × 3.5mm
• 2.5mm × 5mm
• 3mm × 5mm
• 3mm × 6mm

measured as ID × OD.

What does ID mean?

ID means internal diameter.

This is the width of the opening inside the fuel hose.

What does OD mean?

OD means outer diameter.

This is the total width of the tubing from outside edge to outside edge.

Is this suitable for chainsaws?

Yes, this style of small-engine fuel line is commonly used for compatible petrol chainsaws.

Can I use it on a petrol strimmer?

Yes.

These hose sets are commonly designed for strimmers and grass trimmers.

Is it suitable for hedge trimmers?

Yes, provided the hose size and fuel compatibility match the machine.

Can it be used with leaf blowers?

Yes.

Leaf blowers are one of the common applications listed for this type of tubing.

Is it suitable for 2-stroke engines?

Yes.

Matching sets are widely sold for small 2-stroke / 2-cycle petrol engines.

Is the hose resistant to petrol?

Yes, when the supplied tubing is specifically rated as fuel hose.

Is it oil resistant?

Many PU/Tygon-type versions are described as oil resistant, but the exact material specification should be checked.

Is this hose E10 compatible?

Do not assume so.

Some near-identical current UK products explicitly state that they are not suitable for E10 fuel.

Check your supplier specification first.

Can I cut the fuel line?

Yes.

The tubing can normally be cut to the required length.

Do I need hose clamps?

Some small-engine fuel fittings rely on tight push-fit tubing, while others may require clips.

Follow the equipment manufacturer’s original setup.

Can I replace only one fuel line?

Yes.

You can use whichever size matches the damaged line and keep the remaining tubing as spares.

Can I use it for the primer bulb return line?

Yes, when the hose diameter matches the primer fitting and the material is suitable.

Can I use it inside the petrol tank?

Only if the hose material is specifically designed for continuous fuel immersion.

Do not assume all fuel hose can be submerged inside a tank.

Why is the hose transparent yellow?

Translucent fuel line can make it easier to visually inspect fuel flow and identify bubbles or blockages. A current UK Tygon-type line specifically highlights this benefit.

How do I know when fuel hose needs replacing?

Replace it if you notice cracking, hardening, splitting, swelling, leakage or a loose fit around the connectors.