EVIL ENERGY 5/16" Fuel Injection Hose 5 ft — SAE J30R9, 300 PSI, FKM Liner

EVIL ENERGY’s 5/16 fuel injection hose is a 5-foot, SAE J30R9-compliant line built with a fluorine rubber inner tube and epoxy-resistant cover for high-pressure fuel systems up to 300 psi.

This fuel hose is engineered for modern fuel-injection and vapor-management applications where chemical resistance, high temperature tolerance and a compact 5/16" internal diameter matter. Designed to handle gasoline blends, ethanol mixes and diesel variants, the construction uses a fluorine rubber liner, aramid reinforcement and an ECO cover to deliver reliable service in engine bays, fuel tanks and aftermarket swaps.

What are the key performance specs of this 5/16" fuel line?

The hose works at a continuous pressure rating of 300 psi with a burst resistance up to 1200 psi. It accommodates temperatures from -40°F up to 275°F in regular operation, with short-term tolerance to 302°F, and maintains a minimum bend radius suitable for tight routing.

• Inner diameter: 5/16" (8 mm) with ±0.4 mm tolerance
• Outer diameter: 0.55" (14 mm) with ±0.5 mm tolerance
• Length: 5 feet; minimum bend radius: 2.52" (64 mm)
• Working pressure: 300 psi; burst: 1200 psi

Which fuels and systems is this hose compatible with?

This hose is formulated to resist modern fuel blends and many petrochemical agents. It suits fuel injection systems, fuel filters, pumps, tanks and related vapor or oil cooling circuits, making it a versatile option for performance and replacement needs.

• Compatible with gasoline, ethanol blends (E10, E15, E85), biodiesel and diesel
• Works with EFI systems, LS swaps, transmissions and fuel pumps
• Accepts vapor emission and oil cooling routing where SAE J30R9 is required

How is the hose constructed to handle harsh environments?

The hose uses a fluorine rubber (FKM) inner tube for chemical resistance and an ECO (epichlorohydrin) outer cover for weather and ozone durability. Aramid fiber reinforcement provides high tensile strength and collapse resistance under vacuum or pressure cycling.

• FKM inner: excellent resistance to fuels and additives
• Aramid fiber reinforcement: high burst and flex life
• ECO cover: improved abrasion and ozone protection in engine bays

Will this hose fit my application and how do I install it safely?

The 5/16" ID is a common size for many fuel-injection and accessory lines, but always verify fittings and clamp compatibility before installation. Cut cleanly, use the correct fuel-rated clamps or fittings, and route away from extreme heat sources and moving parts to extend service life.

• Check barb or AN fitting size for secure attachment
• Use fuel-compatible clamps (AN-style or OEM-rated) and proper hose ends
• Maintain clearance from exhaust and rotating components

Who is this for: EVIL ENERGY’s 5/16 fuel injection hose is aimed at mechanics, tuners and DIY enthusiasts who need a durable, chemically resistant fuel line for EFI systems, engine swaps, pump and filter connections, or vapor management. It suits projects that require SAE J30R9 performance, compatibility with ethanol blends, and a compact 5-foot length for straightforward installation and replacement in tight engine compartments.