#4 x 90 Deg Bulkhead Fitting Black

The #4 x 90 Deg Bulkhead Fitting Black from FRAGOLA is a precision hydraulic and fluid line component engineered for high-performance systems requiring reliable pressure-rated connections. This 90-degree bulkhead fitting serves technicians, engineers, and system integrators who demand repeatability and leak-free performance in fuel systems, brake lines, cooling circuits, and custom hydraulic installations. Built to tight tolerances, the fitting eliminates guesswork in connection geometry and reduces installation time on complex manifolds or panel-mounted applications.

Constructed from aerospace-grade aluminum and finished in black anodize, the #4 x 90 Deg Bulkhead Fitting features dual 4 AN male ports configured at a precise 90-degree angle. The black anodized coating provides corrosion resistance and durability in demanding environments, while the aluminum construction keeps weight minimal—critical in motorsports and aerospace applications. The 4 AN port designation accommodates standard -4 hose and tubing sizes, ensuring compatibility with industry-standard quick-disconnects, adapters, and fittings across racing, restoration, and OEM systems.

This fitting excels in applications where space constraints or routing efficiency demand angled connections without external adapters. Whether building a custom fuel injection setup, modernizing a classic vehicle, or assembling a pressure-tested hydraulic test stand, the 90-degree geometry simplifies plumbing while maintaining full pressure rating and thread security. The compact 2.25 x 0.8 x 4.1-inch footprint and lightweight 0.03-pound design make it ideal for weight-sensitive platforms. Installation is straightforward using standard AN wrenches on both ports; thread-locking compound is recommended for vibration-prone environments.