Collection: Scion xB Fuel Upgrades

04-06 Scion xB Fuel Upgrades. Aftermarket Fuel Upgrades for Scion xB. Choose from Larger Fuel Injectors, Fuel Pumps, Fuel Pressure Regulators & Adapters and more. Scion xB Fuel Upgrades by Deatschwerks, Walbro, NRG Innovations & More.