If a part is temporarily unavailable, you could substitute it with these parts:
Quality Oil dipstick for Vauxhall INSIGNIA 1.6 116 hp Petrol
Wide selection of new oil dipstick for Insignia Mk1 (A) Saloon (G09) 1.6 Petrol 116 hp, priced from £9.48 to £117.24. Choose from 6 trusted manufacturers.
Oil dipstick for VAUXHALL INSIGNIA models
2.0 CDTI (68) A 20 DTH
1.8 (68) A 18 XER
2.0 CDTI (68) A 20 DTH
2.0 CDTI (35) A 20 DTH
2.0 CDTI (68) A 20 DTE
2.0 CDTI (68) A 20 DT
2.0 CDTI (69) A 20 DTH
2.0 CDTI (35) A 20 DT
2.0 CDTI (35) A 20 DTE
2.0 CDTI (68) B 20 DTH