3AN Male Bulkhead Adapt Black

The 3AN Male Bulkhead Adapt Black from REDHORSE PERFORMANCE is an essential fluid line adapter for custom fuel system installations, turbo builds, and high-performance engine modifications. This bulkhead adapter serves as a pass-through fitting that allows you to route AN hoses cleanly through firewall panels, chassis rails, or engine bay barriers without compromising hose routing or system integrity. Whether you're fabricating a custom fuel delivery system, integrating aftermarket fuel injection, or designing a complete fuel cell setup, this adapter bridges the gap between internal and external plumbing runs with a secure, leak-proof connection.

Engineered from precision-machined aluminum with a black anodized finish, the 3AN Male Bulkhead Adapt features 37-degree JIC flare male threads on both ends—a universal standard in motorsports fuel systems and hydraulic applications. The bulkhead design allows installation directly into a drilled hole, with the adapter gripping internally on one side while presenting a male connection on the opposite side; this approach eliminates the need for external mounting brackets and keeps your engine bay clean and organized. The compact dimensions (2.8 x 1.15 x 3.75 inches) and minimal weight (0.06 lbs) make integration straightforward in tight spaces common to engine swaps, supercharger installations, and turbocharger plumbing. REDHORSE PERFORMANCE's commitment to precision manufacturing ensures consistent thread pitch and flare angle, preventing hose slip-off and catastrophic fuel leaks under high-pressure conditions.

This adapter is ideal for fuel system fabricators, engine builders, and DIY enthusiasts upgrading fuel delivery on street rods, race cars, and restomod projects where OEM fuel lines no longer meet performance demands. The 3AN size accommodates fuel flow rates suitable for naturally aspirated and moderately boosted engines, making it a versatile choice for carbureted conversions and EFI retrofits alike. Installation requires drilling a hole through your bulkhead, panel, or chassis—standard practice in custom fabrication—and torquing the adapter to specification using two wrenches to prevent thread damage. Pair this bulkhead adapter with matching 3AN hose, fittings, and clamps to complete a professional-grade fuel system that handles both street driving and track use without compromise.