This is an OEM replacement Fuel Rail Pressure Sensor for direct injected cars.

Does not fit LNF equipped vehicles. This is the factory pressure sensor for LDK/LHU 2.0L vehicles like the Buick Regal and Buick Verano. If you have installed this sensor in your LNF (Cobalt SS, HHR SS, Sky Redline, or Solstice GXP) please inform your tuner. 

Bosch part # 0261545055.

ACDelco part # 12618108.