Coated Braided Line 21in #4 Hose -4 90 Deg/-4 Str

The Coated Braided Line 21in #4 Hose with -4 90 Degree and -4 Straight connections is a precision hydraulic and brake system component built for demanding applications in racing, off-road vehicles, and high-performance machinery. This ALLSTAR PERFORMANCE hose assembly is engineered for operators who demand reliability under extreme pressure and temperature fluctuations—whether managing brake fluid delivery in competition vehicles or controlling hydraulic systems in tactical or military equipment configurations. The 21-inch length and dual-end fitting design provide flexible routing through engine bays and chassis layouts without compromise to fluid dynamics or system integrity.

Constructed with PTFE (polytetrafluoroethylene) inner lining and braided stainless steel outer reinforcement, the Coated Braided Line 21in #4 Hose delivers superior resistance to fluid degradation, corrosion, and abrasion. The black vinyl coating protects the braided structure from UV exposure and mechanical damage during installation and operation, extending service life in harsh field conditions. Size #4 (-4 AN) specification indicates a 1/4-inch nominal inside diameter—standard for brake and moderate-pressure hydraulic systems where flow rate and pressure handling must remain balanced. The 90-degree female end pairs with a straight female end, allowing installers to navigate tight routing constraints without kinks or stress concentrations that would reduce burst rating or flow efficiency.

Law enforcement and military personnel operating specialized vehicles—including armored platforms, tactical transport, or rescue equipment—benefit from this hose's consistent pressure handling and minimal weight penalty (0.2 lbs). Compatibility spans brake systems, power steering circuits, and hydraulic control networks where -4 AN female threaded ports are present. Installation requires no special tools beyond standard AN wrench sizes; hose assembly integrates directly into existing OEM or aftermarket manifold configurations. Inspect fitting threads for debris before connection and verify system pressure ratings match the hose specification to ensure mission-critical reliability.