Fuel Pressure Regulator kit for 2008-2020 Subaru STI to eliminate the 2800rpm stumble and also give you future upgradability to parallel fuel rails.

Includes all high quality Made in the USA Phenix Fittings and parts. 

1 Adjustable Fuel Pressure Regulator

4 Quick Connect AN Adapters

5 6AN Straight Hose Ends

1 6AN 150deg Hose End

1 6AN O-Ring Plug

2 6AN O-Ring to Flare adapters

2ft 6AN Nylon Braided Hose (Stainless layer inside)

Optional: 1 Phenix Fuel Pressure Gauge