3/8 in (10mm) Fuel Line Hose 25ft - High Pressure 300PSI

Our review of this 3/8 in (10mm) ID fuel line hose finds it best suited to hobbyists and DIY mechanics who need a long, flexible replacement hose for fuel systems and auxiliary oil or water lines. The single biggest reason to buy is its combination of long 25ft length and robust rated performance: a sustained working pressure of 300PSI and a high burst pressure that supports demanding routing and racing-adjacent installations. The NBR compound also tolerates a wide temperature range, making it practical where heat resistance matters.

Key Features

• Size: The 3/8 in (10mm) internal diameter with a 17mm outside diameter gives a common fit for many fuel and return lines used on automotive engines.
• Length: A full 25ft roll provides plenty of hose for complete runs or multiple short replacements without extra purchases.
• Pressure rating: 300PSI working pressure and 1160PSI burst pressure offer a margin of safety for higher-demand applications compared with standard low-pressure lines.
• Material: Made from premium NBR rubber, the hose resists wear and holds up to higher temperatures encountered near engine bays.
• Compatibility: Rated for diesel, biodiesel, gasoline, oil, grease, water and air, it covers a wide range of common automotive fluids.

Who It's For

This hose is aimed at automotive DIYers, racers fitting aftermarket fuel systems, and shops doing batch repairs where a longer supply is convenient. The combination of heat resistance and a high working pressure makes it especially useful for fuel injection lines, oil cooling circuits, and steam or evaporation lines where a tougher hose is required.

It is less suitable for applications that demand OEM-specified materials (for example, specialized fuel injection polymers) or for systems where immediate post-installation softness or minor leakage would be unacceptable without additional fittings or clamps. Buyers should verify system pressure and chemical compatibility before installing.

Pros & Cons

Pros

• Long 25ft length suits multiple uses and reduces the need to join shorter sections.
• High working pressure of 300PSI and 1160PSI burst pressure add durability for demanding runs.
• NBR construction resists heat and common automotive fluids, making it versatile for fuel and oil lines.
• Good value for coverage versus purchasing short pre-cut hoses.

Cons

• Some users report variable durability and occasional early softening, so perform a careful inspection after initial installation.
• Not a direct OEM material substitute for certain injector-specific hoses; confirm compatibility for critical systems.

Specifications

Our Verdict

For DIY mechanics and small shops the 3/8 in (10mm) NBR fuel hose delivers a useful combination of length, pressure rating and heat tolerance at a reasonable cost, making it a practical replacement or spares roll for fuel, oil and auxiliary lines. Verify system pressure and inspect after installation, but for general-purpose automotive work this hose is a solid value and a versatile choice.

Frequently Asked Questions

Can this hose be used with diesel and gasoline?
Yes, the NBR formulation is rated for diesel, biodiesel, gasoline and a variety of oils and greases.

Is 300PSI enough for fuel injection systems?
300PSI working pressure is robust for many aftermarket fuel system uses, but confirm your specific system requirements and fittings before installation.

Will it handle high under-hood temperatures?
The hose is rated from -40F to 257F, so it is suitable for most engine bay environments where NBR is acceptable.