Key Features
Size: AN-4.
Weld-on mild steel bung with male 37 degree flare.
Suitable for custom fabrication projects such as turbo oil return, anti-lag system, coolant lines, oil tanks, gas tanks, and much more
Features a raised section on the back side of the bung to keep the part positioned when welding.
Compatible with water, coolant, air, oil, hydraulic fluid, and most fuels.

HPS Steel AN-4 Weld Bungs are machined from mild steel and are compatible with 37 degree AN flare fittings. The back side of the fitting has a raised feature to keep the part aligned for welding. HPS Weld Bungs come in a raw uncoated finish to minimize the amount of prep work for assembly.