72in #4 Line -4 Str/-4 Str

The 72in #4 Line -4 Str/-4 Str from ALLSTAR PERFORMANCE is a precision-engineered hydraulic hose assembly designed for high-performance automotive fuel, oil, and coolant systems. Built for serious engine builders, custom fabricators, and performance mechanics, this 72-inch hose delivers the reliability and flow capacity needed in modified engines where OEM plumbing won't cut it. Whether you're routing fuel lines through a custom engine bay, integrating a high-capacity fuel system into a street rod, or managing complex cooling circuits in a boosted application, this -4 line size handles mid-range flow demands without sacrificing durability.

Constructed with industry-standard SAE J30R7 or J30R8 reinforced rubber and crimped aluminum fittings on both ends, the 72in #4 Line -4 Str/-4 Str provides straight male connections (-4 Str indicates -4 AN/JIC fitting size on each end) compatible with most aftermarket fuel rails, manifolds, and distribution blocks. The -4 sizing strikes the ideal balance for carbureted and naturally aspirated engines up to moderate boost levels, minimizing pressure drop while keeping hose routing flexible in tight engine compartments. At 0.443 lbs, the assembly adds minimal weight—critical for weight-conscious builds—while the reinforced construction resists abrasion, vibration, and the thermal cycling common in modified powerplants.

This 72-inch length suits custom fuel system plumbing, oil cooler line routing, and transmission cooler circuits where direct OEM hose paths are no longer viable after engine swaps, carb conversions, or mid-engine repositioning. Installation is straightforward—hand-tighten or wrench-secure the -4 straight fittings into your target ports, and use adel clamps or P-clamps every 12–18 inches to prevent vibration-induced failure. Verify your system pressure rating matches or exceeds the hose's working pressure before final assembly, and always route away from exhaust components and moving engine accessories.