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4LifetimeLines nylon fuel line tubing coil, 5/16" x 25 (LTNFL525)
4LifetimeLines nylon fuel line tubing coil, 5/16" x 25 (LTNFL525)
4LifetimeLines nylon fuel line tubing coil, 5/16" x 25 (LTNFL525)
4LifetimeLines nylon fuel line tubing coil, 1/4" x 25 (LTNFL425)
4LifetimeLines nylon fuel line tubing coil, 1/4" x 25 (LTNFL425)
4LifetimeLines nylon fuel line tubing coil, 1/4" x 25 (LTNFL425)
4LifetimeLines nylon fuel line tubing coil, 3/8" x 25 (LTNFL625)
4LifetimeLines nylon fuel line tubing coil, 3/8" x 25 (LTNFL625)
4LifetimeLines nylon fuel line tubing coil, 3/8" x 25 (LTNFL625)
4LifetimeLines nylon fuel line tubing coil, 1/2" x 25 (LTNFL725)
4LifetimeLines nylon fuel line tubing coil, 1/2" x 25 (LTNFL725)
4LifetimeLines nylon fuel line tubing coil, 1/2" x 25 (LTNFL725)
4LifetimeLines nylon fuel line tubing coil, 5/16" x 25' (LTNFL525)
4LifetimeLines nylon fuel line tubing coil, 5/16" x 25' (LTNFL525)
4LifetimeLines nylon fuel line tubing coil, 5/16" x 25' (LTNFL525)
4LifetimeLines nylon fuel line tubing coil, 1/4" x 25' (LTNFL425)
4LifetimeLines nylon fuel line tubing coil, 1/4" x 25' (LTNFL425)
4LifetimeLines nylon fuel line tubing coil, 1/4" x 25' (LTNFL425)
4LifetimeLines nylon fuel line tubing coil, 3/8" x 25' (LTNFL625)
4LifetimeLines nylon fuel line tubing coil, 3/8" x 25' (LTNFL625)
4LifetimeLines nylon fuel line tubing coil, 3/8" x 25' (LTNFL625)
4LifetimeLines nylon fuel line tubing coil, 1/2" x 25' (LTNFL725)
4LifetimeLines nylon fuel line tubing coil, 1/2" x 25' (LTNFL725)
4LifetimeLines nylon fuel line tubing coil, 1/2" x 25' (LTNFL725)

4LifetimeLines Nylon Fuel Line Repair Tubing, 1/4" to 1/2" x 25'

$14.99
4.3
Rated 4.3 out of 5 stars
12 Reviews

SKU: LTNFL425

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The 4LifetimeLines Nylon Fuel Line Repair Tubing comes in 25' coils in 1/4", 5/16", 3/8" and 1/2" sizes for fuel, oil and coolant lines. It resists gasoline, diesel and ethanol blends from E10 to E85, and it's rated from -40°F to 212°F.

What's in the box

  • 1 nylon tubing coil, 25', in the size you choose (no fittings)

Full specifications are under Specifications.

How to use it

Measure the run and cut the tubing square. Install barbed or push-lock fittings (sold separately) and secure them with clamps. Route the line away from exhaust heat and sharp edges, then check every connection for leaks.

Note: Nylon tubing is not for hydraulic brake lines.

Questions

Which size do I need? Match the nominal size of the line you're replacing: 1/4", 5/16", 3/8" or 1/2".

Is it safe with ethanol fuel? Yes. It resists ethanol blends from E10 to E85, as well as gasoline and diesel.

Can I use it for oil or coolant? Yes. It's listed for fuel, oil and coolant lines.

Are fittings included? No. Use barbed or push-lock fittings and clamps, sold separately.

Warranty and support

Covered by the 4Lifetime Limited Lifetime Warranty (see 4lifetimelines.com/pages/warranty). Questions? Email hello@4lifetimelines.com or call 1 (855) 928-4024, Monday–Friday, 9:00 AM–5:00 PM ET.

Material: Nylon
Length: 25' per coil
Uses: Fuel, oil and coolant lines (not hydraulic brake lines)
Fuel compatibility: Gasoline, diesel, E10 to E85
Temperature range: -40°F to 212°F
Fittings included: No (use barbed or push-lock fittings with clamps)
Vehicle fit: Universal (not vehicle-specific)
Warranty: 4Lifetime Limited Lifetime Warranty

Options and SKUs
1/4" x 25': LTNFL425
5/16" x 25': LTNFL525
3/8" x 25': LTNFL625
1/2" x 25': LTNFL725

  • 4.8★ from nearly 4,000 Amazon ratings
  • Free US shipping on orders $50+
  • Ships same day when ordered by 2 PM ET (Mon–Fri)
  • Lifetime warranty on every product

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

4.3
Rated 4.3 out of 5 stars
Based on 12 reviews
83%would recommend this product
12 reviews
  • Rated 5 out of 5 stars
    1 year ago
    Nylon Fuel Line

    I recently purchased this nylon fuel line for my project, and it exceeded my expectations. The material is strong yet flexible, making installation a breeze even in tight spaces. It handles fuel and pressure exceptionally well, with no signs of leaks or wear after weeks of use. I also appreciated the precise sizing, which fit perfectly without the need for additional adjustments. Overall, this fuel line is durable, reliable, and an excellent value for the price. Highly recommended for anyone looking for a high-quality fuel line! I will continue to purchase from 4life Time lines for any of my line need!

    RP
    Russell P.
  • Rated 5 out of 5 stars
    2 years ago
    3/8 nylon fuel line

    Very good product, and very fast shipping thanks

    CS
    clinton s.
  • Rated 1 out of 5 stars
    2 years ago
    I still have not received my order

    Still haven’t received my order

    CW
    Chipper W.
  • Rated 5 out of 5 stars
    2 years ago
    Good deal

    Good deal

    GO
    Glenn O.
Free Shipping

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Spend $50. We Cover the Rest.

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BUILT TO ENDURE

No Weak Points. No Compromises.

Lifetime Warranty

LIFETIME WARRANTY

One Purchase. Lifetime Coverage.

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TRADE FRIENDLY

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Quality materials. Proven craftsmanship.
Built with materials and workmanship we trust. No shortcuts.

A Smart, Risk-Free Buy

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A Smart, Risk-Free Buy

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Buy once. Be done.
This isn’t a temporary fix — it’s a long-term solution. Built-in confidence. Zero guesswork.

Straightforward. No Fine Print.

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Straightforward. No Fine Print.

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What you see is what you get.
Clear terms. Honest coverage. No hidden clauses. No loopholes. No runaround.

Backed for the Long Haul

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Backed for the Long Haul

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We stand behind every product.
As long as you own it, we’ve got your back.

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Meets SAE / OE specifications

Easy returns — no restocking games

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100+ 5 star reviews

“.. easy to get the part you need, when you need it.”

Jackson

Great Experience

Great received day early good product this is 3rd time doing business with 4LifetimeLines

Happy Customer

Great product!! I’ve ordered these before and they are great quality! I’ll be back again.

Excellent

Excellent product shipped quickly and inexpensively. I will be ordering again.

Ideal Products

Ideal stuff for fabricating brake lines brake lines at a very good price.Kit very well covers the materials for doing the whole brake line system.

Reasonable price and fast shipping!

I'll be back again!

Great Seller!

Great seller to deal with. Fast shipping and great products.

Great products, competitive prices, and fast shipping. Communication is also top notch.

This was my first purchase and the experience has been fantastic. Great products, competitive prices, and fast shipping. Communication is also top notch.

Great products, competitive prices, and fast shipping.

This was my first purchase and the experience has been fantastic. Great products, competitive prices, and fast shipping. Communication is also top notch.

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