3/8in DOT Airline 40ft

The 3/8in DOT Airline 40ft by RideTech is a critical component for pneumatic suspension systems, air brake lines, and industrial pneumatic applications requiring reliable, DOT-compliant tubing. Designed for users who demand consistent air delivery without leakage or degradation, this 40-foot airline meets Department of Transportation standards for safety-critical air line installations. Whether you're building a custom air suspension system, setting up a compressor network, or maintaining existing pneumatic equipment, this tubing delivers the durability and performance professionals expect.

Engineered from high-strength plastic material, the 3/8in DOT Airline features a 3/8-inch diameter bore optimized for balanced flow rates and pressure retention across the full 40-foot length. The black plastic construction resists UV degradation, ozone cracking, and temperature fluctuation—critical factors in both outdoor and engine bay installations. DOT certification ensures this tubing meets rigid pressure and safety standards, making it suitable for brake systems, air suspension networks, and high-reliability pneumatic circuits where regulatory compliance is mandatory. The compact coil design (11.05 x 11.6 x 2.55 inches, weighing just 1.02 lbs) allows easy transport and storage without kinking or creasing.

This airline is ideal for automotive customizers, suspension technicians, and fleet maintenance shops integrating air systems into vehicles or pneumatic equipment. The 40-foot length accommodates most single-vehicle installations while minimizing waste, and the 3/8-inch diameter suits mid-range compressor systems and moderate-flow applications. Installation is straightforward with standard compression fittings and quick-disconnect couplers; ensure proper support clamps every 3–4 feet to prevent vibration and fatigue. RideTech's reputation for suspension and air system components makes this airline a trusted choice for builders prioritizing longevity and regulatory adherence.