3AN Bulkhead Adapter Tee Bulkhead On Side Black

The 3AN Bulkhead Adapter Tee Bulkhead On Side in Black is an essential fluid distribution component for custom automotive cooling and fuel system builds. Engineered for mechanics and performance enthusiasts who demand precision plumbing in modified engines, this adapter serves as a critical junction point where high-pressure hose lines merge or split. Whether you're upgrading a turbo cooling loop, integrating a secondary fuel circuit, or managing complex intercooler ducting, this bulkhead tee provides a compact, leak-free connection platform that simplifies manifold routing in tight engine bays.

Manufactured to AN (Army-Navy) standard specifications, the 3AN size accommodates hose diameters of 3/16 inch, making it ideal for low to moderate flow rate applications in fuel delivery and coolant circulation systems. The bulkhead design—with the tee outlet positioned on the side—allows the adapter to mount directly through a firewall, panel, or bulkhead surface without requiring additional standoff hardware. The black finish resists corrosion and oxidation while blending seamlessly into modern engine bay aesthetics, and the anodized aluminum or stainless steel construction ensures durability under vibration and thermal cycling common in performance-modified vehicles.

This adapter is best suited for street rods, turbocharged swaps, EFI fuel system retrofits, and custom cooling solutions where space constraints demand compact, efficient fitting geometry. Installation requires AN-compatible hose—typically braided stainless or high-pressure rubber—secured with reusable or disposable AN fittings on each port. Verify firewall or component thickness against the adapter's mounting depth before purchase; the compact 2.8 x 1 x 3.8 inch footprint makes it suitable for most modern engine compartments, but tight vintage or competition builds should confirm clearance. Professional installation is recommended to ensure proper torque specs and seal integrity.