42in #3 Line -4 Str/-4 Str

The 42in #3 Line -4 Str/-4 Str brake hose from ALLSTAR PERFORMANCE is engineered for high-performance hydraulic brake systems where reliability and precise fluid delivery are non-negotiable. Built for street machines, race cars, and custom hot rods, this hose assembly replaces factory rubber lines with a stainless steel braided construction that withstands extreme pressure cycles, vibration, and corrosive under-hood environments. Mechanics and fabricators choose this hose for brake system upgrades, custom builds, and restorations where durability and appearance matter equally.

This 42-inch hose features a -4 AN (5/16-inch) stainless steel braided outer layer protecting a PTFE (polytetrafluoroethylene) inner line, rated for the high-pressure demands of modern brake systems and compatible with both DOT and synthetic brake fluids. The -4 AN straight female to -4 AN straight female configuration provides secure connections without adapters, reducing potential leak points and simplifying installation. The compact 0.24 lbs weight and flexible braided design make routing through engine bays straightforward, while the stainless braid resists corrosion and delivers a professional appearance that enhances any custom chassis.

Custom fabricators and performance builders benefit most from this hose when upgrading to larger bore master cylinders, remote reservoirs, or swapping between carburetor and fuel-injection brake systems. The 42-inch length accommodates most mid-engine and rear-mounted brake component configurations common in street rods, race cars, and heavily modified trucks. Installation pairs seamlessly with -4 AN brake system components, including proportioning valves, master cylinders, and caliper hard lines, making it ideal for ground-up builds where every connection must be leak-proof and vibration-resistant. Always verify hose routing away from exhaust components and ensure AN fittings are torqued to manufacturer specifications for optimal seal integrity.