Straight Bulkhead -4 Black 10pk

The Straight Bulkhead -4 Black 10pk from ALLSTAR PERFORMANCE is a professional-grade hydraulic and fuel system fitting designed for high-performance racing, custom vehicles, and precision fluid transfer applications. This ten-piece set provides reliable, leak-free connections in tight engine bays where space constraints demand compact, straight-line coupling. Whether you're building a fuel injection system, hydraulic brake setup, or power steering line, these fittings deliver the dependability required in competition and street performance environments.

Each Straight Bulkhead -4 Black fitting features a 4 AN (5/16") male-to-male bulkhead configuration, allowing you to pass a fluid line through a panel, firewall, or bulkhead while maintaining a sealed joint on both sides. The aluminum construction is hard-anodized in black, offering superior corrosion resistance and a professional appearance that resists oxidation in harsh engine environments. The straight design eliminates bends at the mounting point, reducing turbulence and pressure loss while simplifying installation in confined spaces where angled adapters would create fit conflicts.

Fabricators, engine builders, and race teams benefit most from purchasing this ten-pack, as bulkhead fittings are frequently needed across multiple system points in a single vehicle project. These fittings are fully compatible with standard 4 AN hose, line, and adapter ecosystems, making them a versatile choice for fuel systems, oil cooler circuits, transmission coolers, and hydraulic applications. Installation requires no special tools beyond standard AN line wrenches, and the black anodized finish ensures a consistent, OEM-quality appearance throughout your system.