Filler Neck Supply Co FNA1375SS304 Fuel Filler Neck 304 Stainless 2.28 in./58mm X 0.64 in./16mm Tall Fuel Filler Neck 304 Stainless Steel Used On Fuel, Hydraulic Water Applications. Weld On or Drill Holes In Flange For Bolt On Application. 1/4 Turn Cam Lock Bayonet Style Cap Threads.