The turbocharged 1.4-liter "LUV" engine from the Chevrolet Cruze and ... valve cover, and water pump. This suggests the mill came out a junked Cruze or Sonic and then received some maintenance ...

Cavalier was a real good car, even the cobalt, but the Chevy Cruze is the worst Chevy car ... a battery, and a water pump. Recently the engine surged. Sometimes slightly. Sometimes too often.