Bulkhead Nut 8an (1pk)

The EARLS Bulkhead Nut 8AN is a precision aluminum fitting component designed for high-pressure hydraulic and fuel line assemblies in performance and motorsport applications. This black anodized nut serves as the critical connection point in 8 AN (AN8) bulkhead fitting systems, where reliable sealing and structural integrity are non-negotiable. Whether you're building a custom fuel system on an off-road platform, assembling a high-horsepower engine bay, or maintaining professional hydraulic systems, this single-piece nut provides the secure mechanical interface required to prevent leaks under pressure.

The 8AN designation indicates this nut is compatible with standard 8 AN bulkhead fittings—a widely adopted sizing standard in performance plumbing that accommodates flow rates and pressure cycles typical of fuel injection systems, supercharger intercoolers, and transmission coolers. Aluminum construction keeps system weight minimal while the black anodized finish provides corrosion resistance in harsh underhood or exposed environments. The anodize layer also improves grip and visibility during assembly and service. Each nut is manufactured to tight tolerances to ensure proper seating and prevent cross-threading, which is critical when working with multiple fittings in confined spaces.

Buyers assembling custom fuel systems, hydraulic circuits, or high-performance cooling loops will recognize this nut as an essential consumable—these components are often replaced during system rebuilds, repairs, or when upgrading line routing. Technicians and enthusiasts who prioritize leak-free performance in motorsport, off-road, or marine environments depend on OEM-equivalent fittings like EARLS to maintain system integrity. The compact 1.65 x 0.45 x 3 inch profile fits tight engine compartments and custom installations where space is limited.