Product Overview
PLUMBING KITS
COMPATIBILITY: 20-0629-03 and 20-0629-05 FUEL HANGER PLUMBING KIT, SUBARU 08-21
08-14 Subaru Impreza (all)
08-14 Subaru Forester (all)
14-18 Subaru Forester XT
15-21 Subaru WRX
15-21 Subaru STi
These optional fuel hanger plumbing kits include a filter, hose, fittings, hardware, etc. They add the necessary post pump filtration required when using the Radium Engineering fuel pump hanger. 
An 8AN PTFE feed line routes from the Radium hanger up to the Radium fuel filter mounted under the vehicle. From the filter, an 8AN rubber hose is supplied to go to the fuel rails.
A 6AN rubber return hose is included that routes fuel from the fuel pressure regulator back to the fuel pump hanger. As shown below, billet aluminum retainers are included to secure the fuel lines.
The only difference between the 2 kits is the filter element (20-0629-03=stainless, 20-0629-05=microglass). More info can be found HERE. 
The filter bracket mounts to the chassis with no drilling or permanent modifications required.
NOTE: Aftermarket fuel rails and fuel pressure regulator are recommended.
