These anodized billet 6061 aluminum adapter fittings allow an OEM fuel pressure regulator (FPR) or fuel pulse damper (FPD) to be reused in an application other than the OEM fuel rail. All fittings permit the unit to be clocked into the proper position.
Part Number: 20-0301
Fitting Threads: 8AN ORB male
FPR Threads: M6x1.0mm
Application:
Toyota 2JZ-GE
Toyota 2JZ-GTE
Toyota 2RZ-FE
Toyota 3RZ-FE
Mitsubishi EVOX 4B11T
Saab 9-2X Aero 2.0L
Subaru EJ20 GDA WRX
Mazda MX-5 B6
Mazda MX-5 BP
etc.
Required: Fuel rail must have a 8AN ORB female threaded port.
Part Number: 20-0302
Fitting Threads: 8AN ORB male
FPR Threads: M6x1.0mm
Application:
Mitsubishi EVO VIII
Mitsubishi EVO IX
etc.
Required: Fuel rail must have a 8AN ORB female threaded port.
Part Number: 20-0303
Fitting Threads: 8AN ORB male
FPR Threads: M5x0.8mm
Application:
Nissan RB26DETT
Nissan RB25DET
Nissan SR20DET
Nissan KA24DE
Nissan CA18DET
Saab 9-2X Aero 2.5L
Subaru EJ20 GC8 WRX
Subaru EJ25 GR WRX
Mazda RX-7 13B
etc.
Required: Fuel rail must have a 8AN ORB female threaded port.
Part Number: 20-0460
Fitting Threads: 8AN ORB male
FPR/FPD Threads: M6x1.0mm
Application:
Nissan VQ35DE Fuel Pulse Damper
Nissan VR38DETT Fuel Pulse Damper
Nissan VR38DETT Fuel Pressure Regulator
etc.
Required: Fuel rail must have a 8AN ORB female threaded port.
Part Number: 14-0165
Fitting Threads: 3/8" NPT male
FPR Threads: M5x0.8mm
Application:
Nissan RB26DETT
Nissan RB25DET
Nissan SR20DET
Nissan KA24DE
Nissan CA18DET
Saab 9-2X Aero 2.5L
Subaru EJ20 GC8 WRX
Subaru EJ25 GR WRX
Mazda RX-7 13B
etc.
Required: Fuel rail must have a 3/8" NPT female threaded port. PTFE sealing paste. Each end of the adapter fitting mimics the profile of an 11/16" (18mm) wrench for rotating during installation.
Part Number: 14-0285
Fitting Threads: 8AN ORB male
Application:
Toyota 1JZ-GTE Non VVT-i
Toyota 1JZ-GTE VVT-i
Toyota 3S-GTE
Toyota 1UZ-FE
Mazda RX-7 FC Series 4
etc.
Required: Fuel rail must have a 8AN ORB female threaded port.
Part Number: 20-0014
Fitting Threads: 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
Ford Falcon BA, BF, FG XR6 Turbo
Ford Territory Turbo
FPV F6 Typhoon Turbo
Volkswagen 1.8L Turbo
etc.
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. 
Part Number: 20-0459
Fitting Threads: 8AN ORB male
Application:
Nissan VQ35HR Fuel Pulse Damper
Nissan VQ37VHR Fuel Pulse Damper
Nissan VQ40DE Fuel Pulse Damper
Nissan VR38DETT Fuel Pulse Damper
etc.
Required: Fuel rail must have a 8AN ORB female threaded port.