4AN Bulkhead Nuts Aluminum Black 2/pkg

The 4AN Bulkhead Nuts Aluminum Black 2/pkg from REDHORSE PERFORMANCE are essential fittings for custom fuel line, coolant line, and brake line systems in high-performance automotive builds. These bulkhead nuts provide a clean, secure connection point where hoses penetrate firewall panels, fuel cell walls, or custom-fabricated brackets, making them ideal for automotive enthusiasts and mechanics.

Constructed from lightweight aluminum, these fittings are designed to minimize weight while ensuring durability and corrosion resistance thanks to their black anodized finish. The 4AN size corresponds to a 1/4-inch outer diameter, making them suitable for moderate-flow applications in most custom fuel systems and cooling loops.

Mechanics and fabricators restoring vintage muscle cars or building race cars will appreciate the bulkhead design, which allows for a secure seal from both sides of a panel or tank wall. This eliminates the need for exposed clamps or brackets, enhancing the overall appearance and functionality of the engine bay.