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Vauxhall Astra Thermostats

Compare thermostats prices for the Vauxhall Astra from top UK retailers

From £9.44

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🔍 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.

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4 thermostats found for Vauxhall Astra

✅ Best Price
Blue PrintValue

Part No: ADM59234

Thermostats for Vauxhall Astra

GatesOEM Quality

Part No: TH44788G1

Thermostats for Vauxhall Astra

MahleOEM Quality

Part No: TX 197 88D

Thermostats for Vauxhall Astra

Febi BilsteinPerformance

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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