The Opel Z14XEP is a 1.4 l (1,364 cc, 83.24 cu-in) straight-four 4-stroke natural aspirated gasoline small-displacement engine from the second generation of the GM Family O Ecotec engines, developed by Opel, at the time a subsidiary of General Motors. The engine was manufactured from 2003 to 2010.
The Opel Z14XEP engine uses a light-weight cast-iron engine block with a cast-iron crankshaft and aluminium head with dual chain-driven overhead camshafts (DOHC) and four valves per cylinder (16 valves in total). This engine used TwinPort technology – twin intake ports with a choke closing one of the ports at low RPM, providing a strong air swirl pattern for higher torque levels and better fuel economy. The engine used ECU Bosch ME7.6.1 or Bosch ME7.6.2.