In such a case, the replacement engines shall either comply with the emission limits that they would have needed to meet in order to be placed on the Union market on 31 December 2011, or shall comply with more stringent emission limits.
I gcás den sórt sin, comhlíonfaidh an t-inneall athsholáthair na teorainneacha astaíochta ba ghá dóibh a chomhlíonadh chun go gcuirfí iad ar mhargadh an Aontais an 31 Nollaig 2011 nó comhlíonfaidh siad teorainneacha astaíochtaí atá níos déine.