Bulkhead AN Straight -12

The Bulkhead AN Straight -12 from Allstar Performance is a precision hydraulic and fuel line fitting designed for high-performance racing, marine, and aerospace applications where reliable fluid transfer is non-negotiable. This straight bulkhead connector serves as a pass-through fitting that allows lines to route cleanly through engine compartment walls, chassis tubes, or firewall barriers without sharp bends that compromise flow or invite fatigue failures. Installers and fabricators choose bulkhead fittings when space is tight and pressure integrity cannot be compromised.

Constructed from aluminum and finished in black anodized coating, the Bulkhead AN Straight -12 features 12 AN male connections on both sides, enabling seamless integration into dual-line systems or manifold assemblies. The AN12 (3/4-inch) diameter accommodates high flow rates typical of fuel injection systems, transmission coolers, and engine oil circuits found in modified and competition vehicles. Black anodized aluminum resists corrosion while remaining lightweight, a critical consideration in racing platforms where every pound matters. The straight configuration eliminates the need for separate 90-degree or 45-degree adapters, reducing potential leak points and simplifying the plumbing schematic.

Technicians, engine builders, and motorsport fabricators rely on this fitting for fuel system layouts, hydraulic brake lines, and coolant circuits where bulkhead mounting is required. Installation demands a compatible bulkhead port—typically a threaded hole drilled and tapped to accept AN fittings—and matching hose assemblies or hard lines with AN12 male swage fittings on each end. This fitting is sold individually and pairs directly with Allstar Performance hoses and adapters that carry matching AN designations, ensuring proper port sizing and leak-free connections under full operating pressure.