Radium Engineering Regulator body 6AN ORB high pressure female ports (in/out). 6AN male male low pressure return port. 1/8" NPT female port.Application: Audi 1.8L Turbo Fuel Pressure RegulatorFord Falcon BA, BF, FG XR6 Turbo Fuel Pressure RegulatorFord Territory Turbo Fuel Pressure RegulatorFPV F6 Typhoon Turbo Fuel Pressure RegulatorVolkswagen 1.8L Turbo Fuel Pressure Regulatoretc. Required: Mounts external to the fuel rail. A mounting location is required with hose and hose ends. PTFE sealing paste for 1/8" NPT port.