EVIL ENERGY 5/16 Fuel Injection Hose 10 ft SAE J30R9 — FKM Inner, Aramid Reinforced, 300 PSI

EVIL ENERGY 5/16 fuel line is a 10-foot, SAE J30R9-rated fuel injection hose built with an FKM inner tube, aramid reinforcement and ECO cover for reliable fuel, ethanol and diesel service up to 300 PSI working pressure.

This heavy-duty 5/16-inch (approx. 8 mm ID) fuel hose is engineered for modern fuel injection systems, LS swaps and related automotive plumbing where compatibility with ethanol blends and elevated temperatures matters. With a 10-foot length, aramid braid reinforcement and a fluorine-rubber inner designed to resist fuels and vapors, the hose meets SAE J30R9 criteria and provides a broad operating range for workshop and racing applications.

How is this hose rated for pressure and temperature?

The EVIL ENERGY 5/16 fuel line is rated for a 300 psi working pressure and a 1200 psi burst pressure, giving a wide safety margin for most fuel-injection setups. Temperature capability spans from very cold service to high under-hood heat, with intermittent tolerance above continuous limits.

• Working pressure: 300 psi
• Burst pressure: 1200 psi
• Operating range: -40°F to 275°F (intermittent up to 302°F)
• Minimum bend radius: 2.52 inches (64 mm)

What materials and fuel types is this compatible with?

The hose combines an FKM (fluorine rubber) inner tube with aramid fiber reinforcement and an ECO (epichlorohydrin) outer cover to balance chemical resistance and abrasion durability. It is formulated to tolerate modern fuels, including high-ethanol blends and common diesel or biodiesel compounds.

• Inner: FKM (fluorine rubber) for fuel resistance
• Reinforcement: aramid fiber braid for strength
• Cover: ECO for abrasion and weather resistance
• Compatible media: gasoline, E10/E15/E85, biodiesel, diesel

Will this fit my application and what are the dimensions?

Dimensioning and tolerances are optimized for standard 5/16-inch fuel fittings and clamps; the hose is intended for fuel injection plumbing, fuel pumps, filters, tanks, and transmission or oil-cooling lines where SAE 30R9 is required. Measure fittings and routing clearance to confirm compatibility with the stated tolerances.

• Inside diameter (ID): 5/16 in (≈8 mm), tolerance ±0.4 mm
• Outside diameter (OD): 0.55 in (≈14 mm), tolerance ±0.5 mm
• Length: 10 feet (3.05 m)
• Minimum bend radius: 2.52 in (64 mm)

How does this hose compare to other SAE fuel hoses?

This product conforms to and exceeds SAE J30R9 performance requirements, making it suitable where higher chemical and temperature resistance than R6 or R7 hoses is needed. The aramid reinforcement and FKM inner tube provide improved burst and chemical resistance versus standard rubber-only hoses.

• SAE J30R9 rated for enhanced temperature and chemical resistance
• Stronger burst margins versus R6/R7 types
• Designed for fuel injection systems and demanding environments

Who is this for: The EVIL ENERGY 5/16 fuel injection hose is aimed at mechanics, performance builders and vehicle owners doing fuel-system upgrades, LS swaps, or replacing aged fuel lines. It's also suitable for shops needing a versatile 10-foot length that handles ethanol blends and elevated under-hood temperatures while meeting SAE J30R9 expectations.