Key Features
Size: AN-4.
Weld-on 304 stainless 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 stainless steel AN-4 Weld Bungs are machined from 304 stainless 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.