Application: for Vauxhall / for Opel: Astra G (MK4) 1.6 Petrol - Fit engine code Z16 XEP only Astra H (MK5) 1.8 Petrol - Fit Engine Code Z18 XER, A18 XER only, Do not fit Z18 XE Astra H (MK5) 1.6 Petrol - Fit Engine Code Z16 XEP, Z16 XER, Z16 LET Only Corsa D (MK3) 1.6 Petrol - Fit Engine Code A16 LER, Z16 LER, A16 LES, A16 LEL only Insignia A (MK1) 1.6 Turbo (Petrol) - Fit Engine Code A16 LET only Meriva A (MK1) 1.6 Petrol - Fit Engine Code Z16 XEP & Z16 LET only Signum (Z03) 1.8 Petrol - Fit Engine Code Z18 XER only, Do not fit Z18 XE Vectra C (Z02) 1.6 & 1.8 Petrol - Fit Engine Code Z16 XEP & Z18 XER only ZAFIRA B (MK2) 1.6 1.8 Petrol - Fit Engine Code Z16 XER, A16 XER, Z16 XE1, Z18 XER, A18 XER , Do not fit A18 XEL for Fiat: Croma (194) 1.8 16v Petrol - Fit Engine Code 939 A4.000 for Alfa Romeo: 159 (939) 1.8 MPI - Fit Engine Code 939 A4.000, do not fit 1.8 TBi (939 B1.000) Reference OE/OEM Number: 71744369, 71739725, 95517924 1208021, 1104082, 10458316 150080810, 150080820,