#4 Teflon Hose 3'

The AEROQUIP #4 Teflon Hose 3' is a high-performance racing hose engineered for serious automotive builders and mechanics who demand reliability in fuel, coolant, and hydraulic systems. Built to AN4 specifications, this 3-foot braided hose delivers the pressure handling and temperature stability required in modified engines, supercharged setups, and competition vehicles. Whether you're assembling a custom fuel system for a turbocharged platform or routing brake lines in a purpose-built race car, this hose is designed to handle the demands of professional-grade automotive work.

The #4 Teflon Hose features a stainless steel braided construction paired with a PTFE (polytetrafluoroethylene) inner core, delivering superior chemical resistance and thermal stability compared to rubber alternatives. PTFE's low-friction interior reduces flow turbulence, which is critical for fuel delivery consistency under high boost or high RPM conditions. The braided stainless sleeve protects against abrasion and provides structural reinforcement, allowing the hose to maintain integrity under pressure cycling and vibration—essential in any modified or racing application. This natural-finish hose is rated for demanding automotive fluids and resistant to degradation from ethanol blends, synthetic oils, and other aggressive fuel compositions.

Mechanics and engine builders rely on AEROQUIP hose for fuel system upgrades, brake line replacements, and coolant routing in modified vehicles. The 3-foot length is ideal for connecting fuel pumps to carburetors, FI manifolds, or fuel pressure regulators without excess slack or pressure drops. AN4 sizing fits standard 1/4-inch male AN fittings, making it compatible with most aftermarket fuel system components and racing fuel rails. Installation is straightforward with standard AN wrench sizes; proper hose routing away from exhaust and moving components ensures longevity. For anyone upgrading to a high-flow fuel system or building a competition engine, this hose delivers the durability and flow characteristics that separate amateur builds from professional results.