Vauxhall Astra Thermostats
Compare thermostats prices for the Vauxhall Astra from top UK retailers
From £9.44
🔍 Get exact-fit parts for your Vauxhall Astra
Different Vauxhall Astra variants use different thermostats. Enter your reg plate for guaranteed compatible parts matched to your engine and year.
4 thermostats found for Vauxhall Astra
Part No: ADM59234
Thermostats for Vauxhall Astra
Part No: TH44788G1
Thermostats for Vauxhall Astra
Part No: TX 197 88D
Thermostats for Vauxhall Astra
Part No: 18770
Thermostats for Vauxhall Astra
⚠️ Estimated prices. These are typical UK prices for Vauxhall Astra thermostats. Exact prices and fitment depend on your specific vehicle. Enter your reg for accurate results.
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About Thermostats
What do they do?
The thermostat controls the flow of coolant through the engine. It stays closed when the engine is cold to allow faster warm-up, then opens at operating temperature to allow coolant to flow through the radiator.
When to replace
Thermostats can fail stuck open (engine never reaches temperature, poor heating, increased fuel consumption) or stuck closed (overheating). Replace when symptoms appear or preventively when replacing the water pump.
Brand guide
Wahler, Mahle, and Gates are the main OEM thermostat suppliers. Some thermostats come as a complete housing assembly while others are just the thermostat element.
💡 Top tip: If your engine takes a long time to warm up or the temperature gauge sits lower than normal, the thermostat is likely stuck open. This increases fuel consumption by 5–10% and should be addressed.
⚠️ Known Vauxhall Astra Issues
Water pump failure
The water pump on 1.6 and 1.8 petrol Z-series engines can fail around 60,000–80,000 miles. Look for coolant leaks and overheating.
Parts tip: GM/Opel parts are widely available from aftermarket suppliers. The Astra H is particularly well-served by budget brands offering good quality at low prices.
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