Item: Pressure Converter. Specification of this Pressure Converter. Valve type:Solenoid Valve. X1 E84 09-15. X1 F48 14-22. X2 F39 17-23. BMW 1 E81 07-11. The only way to be 100% sure that the part will fit your vehicle is to check the part number (OEM Number) on your original unit matches one of the above.