#4 Plug

The #4 Plug by Triple X Race Components is a precision-engineered aluminum fitting designed for high-performance hydraulic and fuel system applications in racing and automotive builds. This hex head plug serves as a critical termination point in AN (Army-Navy) line configurations, sealing unused ports and preventing fluid leakage in pressurized circuits. Built for professionals and serious enthusiasts who demand reliability under extreme conditions, the #4 Plug is essential for custom engine bays, fuel systems, and competition-grade hydraulic setups.

Manufactured from aluminum and finished in black anodized coating, this #4 AN plug delivers corrosion resistance and lightweight durability that race-proven components demand. The hex head design ensures secure tightening with standard wrenches, providing a clean, professional appearance while maintaining structural integrity under pressure. The anodized finish protects against oxidation and chemical degradation, critical for systems exposed to fuel additives, coolant, and harsh engine bay environments. At just 0.01 lbs, the plug's minimal weight makes it ideal for weight-conscious racing applications where every ounce counts.

Racers, engine builders, and fabricators rely on the #4 Plug to complete custom fuel and hydraulic systems where OEM configurations don't apply. Compatible with standard #4 AN line systems, this fitting integrates seamlessly into modular setups, custom hot rods, drag racing platforms, and street performance vehicles. Installation is straightforward—simply thread into the corresponding #4 AN female port and hand-tighten before securing with a wrench. For anyone building or modifying high-performance hydraulic circuits, the black anodized #4 Plug by Triple X Race Components offers the precision fit and corrosion resistance that competitive environments require.