Please make sure this is the correct part before buying. In this product page you can see a VAUXHALL INSIGNIA ASTRA K 2016-2018 B16DTH A16DTH B16DTE OIL COOLER 55494842 that will fit a Vauxhall Astra and any of the vehicles in the compatibility list. This vehicle part is a Used part, so please ensure it is the right one before buying.