Dorman Nylon Fuel Line 5/16 in. x 10 ft — chemical-resistant, heat-tolerant replacement tubing

Dorman 800-074 is a 10-foot, 5/16-inch nylon fuel line engineered as a direct replacement tube to safely carry fuel and resist harsh underhood and undercar conditions.

This nylon fuel line offers a practical repair option when aging, cracked, or leaking fuel hoses need replacement. Made with materials chosen for chemical resistance and mechanical durability, the tube is part of Dorman's range of fuel system repair components developed with aftermarket serviceability in mind. It provides enough length to route and cut to fit many vehicle applications while matching common 5/16-inch fittings and clamps used in passenger cars and light trucks.

How does this fuel line hold up to everyday automotive conditions?

The Dorman nylon fuel line is formulated to resist fuel, oil, road salts, and heat typically found in engine bays and beneath vehicles. Its construction minimizes swelling, cracking, and degradation compared with older rubber hoses, helping maintain consistent fuel flow and sealing. Because it’s a straight-length replacement, you can route and secure it away from moving parts and hot exhaust components.

• Chemical resistance to gasoline and common automotive fluids
• Heat-tolerant design for underhood and undercar placement
• Length allows custom routing and secure clamp installation

Will this fit my vehicle and connect to existing fittings?

The tube measures 5/16 inch internal diameter and comes as a 10-foot spool to be trimmed to the length you need. It’s intended for applications that accept 5/16" fuel hose, but confirm compatibility by checking your vehicle’s factory line diameter and connector types. Use the vehicle fitment tool or the make/model/trim lookup to verify compatibility before cutting and installing.

• 5/16" inside diameter for common fuel line connections
• 10-foot length for flexibility in routing and repair
• Confirm fit with vehicle lookup or measure existing hose diameter

How do I install and secure the replacement nylon fuel line?

Installation involves cutting the nylon tubing to length, sliding on compatible clamps or fittings, and routing the line away from heat and moving parts. Use fuel-rated clamps and proper connector adapters where needed; avoid sharp bends and kinks. Inspect for leaks under pressure before driving and re-check clamps after initial use.

• Use a fine-tooth tubing cutter or sharp blade for clean ends
• Install fuel-rated clamps or crimp-style fittings as appropriate
• Route away from exhaust, pulleys, and suspension components

What are the durability and warranty expectations?

Dorman designs aftermarket replacement parts to meet repair-shop standards by selecting materials and manufacturing processes that withstand typical service conditions. While performance depends on installation and operating environment, the nylon material offers improved resistance to common failure modes versus aged rubber lines. Check Dorman’s packaging or website for any specific limited warranty or coverage details that apply.

• Engineered for aftermarket durability and service conditions
• Better resistance to cracking and fuel swelling than aged rubber lines
• Refer to Dorman documentation for warranty terms and support

Who is this for: This 10-foot, 5/16" Dorman nylon fuel line is suited for DIY mechanics, professional technicians, and fleet maintenance crews needing a reliable replacement hose for fuel system repairs. It’s a practical choice when you require a corrosion- and fuel-resistant tube to custom-route and splice into existing systems on many cars and light trucks. Always verify diameter and connector compatibility for your specific vehicle before purchase and follow safe fuel-handling procedures during installation.