FKM Rubber Fuel Hose Pipe – Petrol Diesel Oil Line Tubing, Black, ID 2mm–8mm

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FKM Rubber Fuel Hose Pipe – Petrol Diesel Oil Line Tubing, Black, ID 2mm–8mm

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By HomeDIYer®

Size (ID x OD): 3mm x 5mm

Length: 1 Metre

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$4.15 USD

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In stock (500 units), ready to be shipped

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FKM Rubber Fuel Hose — Reliable Petrol, Diesel & Oil Line Tubing for Every Build

When a leaking or degraded fuel line puts your vehicle, generator, or equipment out of service, the fix starts with the right hose material. Standard rubber tubing can swell, crack, or permeate when exposed to modern ethanol-blended fuels, hot engine bay temperatures, or aggressive oils — leaving DIY mechanics, small engine repair shops, and motorsport builders searching for a dependable alternative. This FKM rubber fuel hose is built specifically for those demanding environments.

Each order is cut from continuous FKM (fluoroelastomer) rubber tubing in your chosen length — available in 1 metre (≈39.4"), 2 metre (≈78.7"), 3 metre (≈118.1"), and 5 metre (≈196.9") runs. Inner diameter options span 2mm (≈5/64") through 8mm (≈5/16"), paired with corresponding outer diameters from 4mm to 12mm, giving you precise wall thickness for your routing needs. The hose is black, flexible, and supplied as a single continuous length — no joins, no splices.

Typical applications include carbureted motorcycle and small engine fuel lines, diesel generator feed lines, oil breather and return hoses, hydraulic fluid routing in compact machinery, and custom fuel system builds where a flexible rubber fuel hose rated for petrol and diesel is required. The consistent bore and smooth inner wall also make it a practical choice for vacuum lines and low-pressure air routing in automotive and industrial settings.

🔗 Compatibility Note: This hose is designed for low-to-medium pressure fuel, oil, and fluid lines. Verify inner diameter against your barb or fitting OD before ordering. For high-pressure fuel injection applications, contact us to confirm suitability.

✅ Key Features of These FKM Rubber Fuel Hose Pipes

🧪FKM Fluoroelastomer Construction — Resists petrol, diesel, biodiesel blends, mineral oils, and many solvents far better than standard nitrile rubber, making it a dependable choice for ethanol-blended fuel lines.
🌡️Heat-Stable in Engine Bay Conditions — FKM rubber generally maintains flexibility and integrity at continuous temperatures up to around 200°C (392°F), handling the thermal cycling common in engine compartments.
📏8 ID/OD Size Combinations — From 2mm×4mm up to 8mm×12mm, each size is matched to a specific wall thickness so you can select the right balance of flexibility and burst resistance for your rubber fuel line application.
✂️Cut-to-Length Flexibility — Supplied in 1m, 2m, 3m, or 5m continuous lengths with no joins; cut cleanly with a utility knife to fit any routing path without waste.
🔄Flexible Yet Kink-Resistant — The rubber compound retains enough stiffness to hold its routed shape around bends without collapsing the bore, maintaining consistent flow in petrol and diesel line installations.
☀️UV & Ozone Resistant — Unlike standard rubber tubing that can surface-crack with outdoor exposure, FKM resists UV degradation and ozone attack, extending service life in exposed engine bay or outdoor equipment installations.

📐 Technical Specifications — FKM Rubber Fuel Hose Tubing

Material	FKM (Fluoroelastomer / Viton-type) Rubber
Color	Black
Inner Diameter (ID) Range	2mm (≈5/64") — 8mm (≈5/16")
Outer Diameter (OD) Range	4mm (≈5/32") — 12mm (≈15/32")
Available Size Combinations (ID × OD)	2×4mm, 3×5mm, 3×6mm, 4×7mm, 5×8mm, 6×9mm, 7×10mm, 8×12mm
Available Lengths	1m (≈39.4"), 2m (≈78.7"), 3m (≈118.1"), 5m (≈196.9")
Pressure Rating	Typically 50–100 PSI (low-to-medium pressure; contact us to confirm for your application)
Temperature Range	Generally –20°C to +200°C (–4°F to +392°F); see variant for exact rating
Fluid Compatibility	Petrol, diesel, biodiesel, mineral oil, hydraulic fluid, many solvents
Fitting Type	Barb / push-fit; hose clamp recommended for pressurized lines
Supply Format	Single continuous length, no joins
Country of Origin	China

⚠️ Spec Confirmation: Exact pressure and temperature ratings vary by wall thickness. If your application involves elevated pressure or temperature extremes, please contact us before ordering to confirm the right size for your needs.

❓ Frequently Asked Questions

How do I choose the right hose size for my fitting?

Match the inner diameter (ID) to your barb or fitting OD. For example, a 5mm barb fitting typically requires a 5mm ID hose. The outer diameter (OD) tells you how much clearance you need in tight routing spaces. When in doubt, measure your existing hose or fitting with calipers — generally a snug stretch fit over the barb gives the best leak-free seal. As a quick reference: 1mm ≈ 0.039", so a 6mm ID ≈ 15/64".

What pressure can this FKM fuel hose handle?

FKM rubber hose of this type is generally rated for low-to-medium pressure fuel and oil lines, typically up to 50–100 PSI depending on wall thickness and operating temperature. For high-pressure fuel injection systems, please contact us to confirm suitability before ordering.

Is this hose safe for outdoor or engine bay use?

Yes. FKM (Viton-type) rubber has excellent resistance to heat, UV exposure, and ozone, making it well suited for engine bay routing and outdoor installations. It generally withstands continuous temperatures up to around 200°C (392°F), though peak ratings vary by wall thickness. Standard rubber tubing typically degrades much faster in these conditions.

Which fuels and fluids is this hose compatible with?

FKM rubber is broadly compatible with petrol (gasoline), diesel, biodiesel blends, mineral oils, hydraulic fluids, and many solvents. It is generally not recommended for ketones (e.g., acetone) or certain brake fluids. Always confirm compatibility with your specific fluid before use in a critical application.

Can I cut this hose to a custom length?

Yes. The hose is sold in 1m, 2m, 3m, and 5m continuous lengths and can be cut cleanly with a sharp utility knife or dedicated hose cutter. A straight, square cut ensures the best contact against barb fittings and minimizes the risk of leaks at the connection point.

Does this hose fit standard barb fittings?

Yes. The inner diameter is sized to fit standard metric barb fittings. The hose ID should match the barb OD — a slight stretch fit is normal and helps create a leak-free seal. Hose clamps are recommended for any pressurized fuel or oil line to prevent the hose from blowing off the fitting under pressure.

What is the difference between FKM and standard rubber fuel hose?

Standard NBR (nitrile) rubber hose can degrade when exposed to modern ethanol-blended fuels or sustained high temperatures. FKM (fluoroelastomer) offers significantly better resistance to fuel additives, ethanol blends, heat, and chemical attack. In most cases, FKM is the preferred choice for long-term fuel line installations where durability and chemical resistance matter.

🛒 Select your size and length above, then add to cart — ships from our US warehouse.