2004 Scion xA Engine: 1.5L L4;. 2005 Scion xA Engine: 1.5L L4;. 2006 Scion xA Engine: 1.5L L4;. Part Type: Engine Water Pump Gasket. Water Pump Gasket. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.