The 20-0505-V Remote Mount Filler, 1.5in, Vented typically secures to the vehicle body. The vented fuel cap has roll-over protection if the vehicle ever becomes inverted. The fill neck has a machined hose barb connection for 1.5" filler hose. The outer diameter is 4.75" and uses 4.25" P.C.D for the five M5 bolts. Total height is 4.1". Requires a 77mm (3.03") hole to be fabricated.