For a 2005 Holden Astra, you typically need a T30 Torx key for most interior and exterior fasteners. However, some specific components may require different sizes, so it's always a good idea to check the specific fastener type or consult the vehicle's service manual for confirmation.
You need aTorx 45 size
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5.5 mm Allen Key
18" blades.
T45
7 mm
The Vauxhall Astra is considered to be a medium-size vehicle. Other cars that are similar in size to the Vauxhall Astra are the Ford Focus and Volkswagon Golf.
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19 and a 20 inch on the front. 16 inch for the rear.
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To change the thermostat on an Astra, you typically need a Torx (star) socket size T20. However, it’s always a good idea to check your vehicle's service manual or inspect the screws directly, as specifications can vary slightly between models and years.
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