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How to Replace the Thermostat on the Opel Astra 1.7 CDTI

Model: Vauxhall Astra Astra H - Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010
Part: Thermostat

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Video tutorial

In this tutorial, follow the necessary steps to remove and replace the thermostat on the Opel Astra 1.7 CDTI. First, open the bonnet of your car and disconnect the thermostat hose by unscrewing the metal clip; allow the fluid to drain into a container for about ten minutes.

Next, unscrew the thermostat mounting bolts to remove it; now replace it with the new one, ensuring it is the original part, and finally top up with the new coolant suitable for your engine (filling to the maximum level mark)!


Updated on 17 July 2026 by ScegliAuto


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by ScegliAuto

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