5/16" x 100' Copper-Nickel Line Coil – Fuel & Transmission Tubing

Get long-lasting performance and maximum flexibility with the 4Lifetime 5/16" x 100' Copper-Nickel Line Replacement Coil, engineered for fuel, transmission, and fluid transfer systems. Whether you're a repair shop stocking up or a DIYer tackling a full rebuild, this coil delivers unmatched corrosion resistance, ease of use, and extended durability.

Premium Copper-Nickel Construction
Manufactured from 90/10 copper-nickel alloy, this tubing provides superior protection against rust, moisture, and road salt. Its flexibility makes routing through tight spaces easy, and it resists cracking, kinking, or fatigue over time—even in demanding environments.

Built for Fuel & Transmission Systems
Designed specifically for use as fuel lines, transmission cooler lines, or general fluid transfer tubing, the 5/16" diameter is a common OEM size and supports a wide range of vehicle applications.

Easy to Bend and Flare
The tubing features a 0.028” wall thickness, making it easy to form with standard hand tools. Clean bends and precise flaring mean quicker, cleaner installations—no special equipment required.

Key Features:

5/16" OD x 100 ft length copper-nickel tubing

Ideal for fuel, transmission, and general fluid transfer

Corrosion-resistant and road salt-ready

Easy to bend and flare with standard tools

Compatible with standard fittings and flaring tools

Meets SAE and ISO standards

Backed by 4Lifetime’s lifetime warranty

Whether you're restoring, upgrading, or fabricating—this 100 ft coil offers the reliability, flexibility, and peace of mind professionals trust.