 The Z20LEH also features high quality Mahle forged pistons, which are much stronger than the cast pistons fitted to the Z20LET, Z20LEL and Z20LER.The 2.0-litre X20SED D-TEC 16 Valve DOHC MPFi was built by Holden and used in the Daewoo Nubira.The L34 also known as the U20SED is a 2.0 L () engine that was built until 2009 by Holden in Australia, dubbed D-TEC by GMDAT (the new Daewoo after the buyout from GM) or E-TEC II by Chevrolet (GM).