V-Twin Mfg. Replica 5.0 Bobbed Gas Tank Set For Harley FL / FX Replica Bobbed Gas Tank has a five gallon capacity to take you here, there and everywhere. Accepts stock dash and speedometer and features a left-side petcock hole to control the flow. Features: Petcock hole is 3/8 NPT to accept a male petcock Bayonet style cap set can be used It is suggested to pressure test the tank and use a tank sealer Note: Body work and painting required