Coated Line #4 Str to 90 Steel Ends 40in

The Coated Line #4 Str to 90 Steel Ends 40in from ALLSTAR PERFORMANCE is a precision-engineered brake hose assembly purpose-built for high-pressure hydraulic systems in performance vehicles, racing platforms, and heavy-duty applications. This 40-inch hose bridges critical connections where a straight female AN fitting must transition to a 90-degree angle, eliminating bulky adapters and reducing potential leak points. Designed for technicians and mechanics who demand reliability under extreme conditions, this hose is essential for brake line routing in tight engine bays where space constraints demand efficient geometry.

Construction centers on a PTFE-lined inner core—critical for brake fluid compatibility and corrosion resistance—wrapped in braided stainless steel that withstands pressure spikes and thermal cycling without degradation. The black vinyl outer coating serves dual purposes: protecting the braided reinforcement from UV damage and abrasion while providing positive grip identification in engine compartments where multiple hose runs demand visual distinction. Four AN (JIC AN-4 nominal) fittings at both ends ensure leak-free connections when properly torqued, meeting or exceeding DOT and SAE J517 standards for automotive brake systems. The straight-to-90-degree configuration eliminates stress concentration points that occur with bolt-on adapters, extending hose service life in racing and street performance environments where pressure cycling is constant.

This hose assembly benefits custom fabricators, race teams, and restoration specialists tackling non-standard brake layouts or fuel system upgrades on performance builds. The 40-inch length accommodates medium-distance runs—typical for connecting master cylinders to distribution blocks or rear-axle brake assemblies on modified chassis. Proper installation requires AN wrench sizing (typically 9/16" for AN-4) and anti-seize compound on threaded fittings to prevent galling. Always verify hose routing away from exhaust manifolds and moving engine components; high-temperature environments (above 200°F) may require heat-wrap protection despite the vinyl coating's inherent flame resistance.