Podavelle 5/16" OD Aluminum Hard Fuel Line Hardline Tube

Podavelle's 5/16" OD aluminum hard fuel line is a 25‑foot coil of 3003‑grade tubing engineered for durable, corrosion‑resistant fluid runs in fuel, oil, water and air systems.

This lightweight aluminum hardline offers a practical balance of strength and formability for garage fabricators, restorers, and builders. With a 5/16 inch outside diameter and a 0.7 mm wall, the tube arrives coiled for easy storage and is suited to cutting, bending, flaring and polishing. It’s specified for a maximum working pressure of 650 psi and accepts common tube nuts, sleeves and 37° AN flared fittings, making it a flexible choice for many vehicle and equipment installations.

What are the key dimensions and pressure limits of this tubing?

The tube measures 5/16 inch (7.93 mm) outside diameter with a 0.7 mm wall thickness and comes as a 25‑foot (7.62 m) coil. Its maximum recommended working pressure is 650 psi, suitable for numerous low‑ to mid‑pressure fluid applications. These specs help determine compatibility with fittings and routing clearances.

• Outside diameter: 5/16" (7.93 mm)
• Wall thickness: 0.7 mm
• Coil length: 25 ft (7.62 m)
• Max working pressure: 650 psi

How does the 3003 aluminum alloy perform for fuel and fluid lines?

Extruded from 3003 grade aluminum, this tubing combines light weight with good corrosion resistance and ductility. The alloy allows straightforward manual bending, trimming, and flaring without cracking, while resisting common corrosion mechanisms found in vehicle and equipment environments. It’s not a stainless substitute but offers a favorable balance of workability and longevity.

• 3003 alloy: corrosion‑resistant and easy to work
• Suitable for cutting, bending and polishing
• Accepts standard flares and fittings reliably

Which fluids and systems is this tube compatible with?

This hardline is compatible with a broad range of fluids including gasoline, diesel, ethanol blends (E85), oil and water, as well as compressed air in many applications. Its compatibility with standard tube nut couplers, sleeves and 37° AN fittings means it fits into existing fuel and fluid system assemblies. Avoid prolonged exposure to highly corrosive chemical environments not intended for aluminum.

• Works with gasoline, diesel, ethanol blends, oil and water
• Also usable in air and other non‑corrosive fluid systems
• Pairs with tube nuts, sleeves and 37° AN flared fittings

How should I install, join and finish this hardline for reliable service?

Cut the coil to length with a tubing cutter, deburr the ends, and form the required bends with a tube bender to avoid kinking. Use proper sleeves, tube nuts and 37° AN flared fittings for pressure‑tight connections, and torque fittings to manufacturer specifications. If exposed, consider polishing or coating the exterior to improve aesthetics and extra corrosion protection in harsh environments.

• Cut with a tubing cutter and deburr ends before flaring
• Form bends with a tube bender to prevent kinks
• Use sleeves, tube nuts or 37° AN fittings for joints
• Polish or protect exposed runs for added durability

Who is this for: Podavelle's 5/16" aluminum hard fuel line is aimed at automotive hobbyists, performance fabricators, classic car restorers, marine and small‑engine technicians, and anyone building custom plumbing for fuel, oil, water or air where a lightweight, workable metal tube with a 650 psi rating is appropriate. It’s best for projects requiring flared fittings and straightforward mechanical assemblies rather than highly corrosive or extreme‑temperature environments.