EVIL ENERGY 3/8 Fuel Line Hose 25FT SAE 30R9 - High Temp Fuel

In this review the EVIL ENERGY 3/8 fuel line hose is judged for DIY mechanics and professional tuners who need a durable, fuel-injection rated line for swaps and repairs. The bottom line: this 25ft length offers a robust combination of a FKM inner, aramid reinforcement and an ECO cover that meets SAE J30R9, which makes it a clear choice when resistance to ethanol blends and elevated temperatures is the priority for a fuel system hose.

Key Features

• ID and length: The 3/8in inner diameter and full 25ft length provide enough hose for long runs or multiple short lines without joining sections.
• High working pressure: A 300psi working pressure and 1200psi burst rating give confidence for fuel injection and high-pressure feed applications.
• Temperature range: The -40F to 275F operating range (with intermittent 302F tolerance) lets it survive engine bays and near-transmission heat sources.
• Materials: FKM inner, aramid fiber reinforcement and ECO cover combine chemical resistance and abrasion durability for ethanol blends and diesel.
• Standards compatibility: Meeting and exceeding SAE J30R9 ensures compatibility with 30R6 and 30R7 systems used in many fuel injection setups.
• Bend handling: A minimum bend radius near 3in makes routing around tight engine bay corners manageable without kinking.

Who It's For

This hose is aimed at people installing or upgrading fuel injection systems, performing LS swaps, or fabricating fuel lines for vehicles that run ethanol blends, biodiesel or diesel. It is useful for shop technicians and committed DIYers who value a hose built to SAE J30R9 with a durable fluorine rubber inner for chemical resistance.

Those looking for a smaller-diameter snug fit on 5/16in barbs should check fittings carefully, since some users report mixed fit on smaller barbs; if exact barb sizing is critical a different ID may be preferable. It is not intended as a decorative vacuum line or for very low-temperature specialty fluids outside the stated range.

Pros & Cons

Pros

• Durable construction with FKM inner and aramid reinforcement resists ethanol and high temperatures.
• Long 25ft reel reduces the need for joints and allows multiple runs from one purchase.
• High working and burst pressures make it suitable for fuel injection and demanding fuel system tasks.
• Flexible with a reasonable minimum bend radius for routing in engine bays.

Cons

• Fit on 5/16in barb fittings can feel loose for some users so careful selection of clamps and fittings is required.

Specifications

Inner Diameter	3/8in (9.5mm) 0.4mm
Outer Diameter	0.63in (16mm) 0.5mm
Length	25ft
Working Pressure	300psi
Burst Pressure	1200psi
Temperature Range	-40F to 275F (intermittent 302F)
Standard	Meets/exceeds SAE J30R9

Our Verdict

The EVIL ENERGY 3/8 fuel line is a practical, value-oriented choice for fuel injection work where chemical resistance and heat tolerance matter. For fabricators and mechanics who need a long reel built to SAE J30R9 with strong reinforcement and FKM inner material, this hose delivers dependable durability and versatility at a reasonable price.

Frequently Asked Questions

Is this hose compatible with ethanol blends?
Yes. The FKM inner and ECO cover are compatible with ethanol, E85, E10 and common biodiesel blends.

Can it be used for fuel return and transmission lines?
Yes. The construction and temperature rating make it suitable for fuel systems, oil cooling and vapor emission management applications.

Will it fit 5/16in barbs without clamps?
Some users report a loose fit on 5/16in barbs, so use appropriate clamps and verify the fit before final installation.