Peugeot 508 Thermostats
Aftermarket thermostats engineered to slot into the Peugeot 508. Cross-referenced against OEM specs and dispatched countrywide from our warehouse
What Are Peugeot 508 Thermostats?
The thermostat is the temperature-controlled valve that blocks coolant flow until the engine reaches operating temperature, then opens to let coolant circulate through the radiator. On Peugeots we see thermostats stick open — causing cold running and weak heater output — more often than stuck closed, though both happen.
Signs You Need New Thermostats
Common Questions About Peugeot 508 Thermostats
What are the symptoms of a stuck Peugeot thermostat?
Stuck open: engine runs cold, heater is weak, gauge never reaches the middle, fuel economy drops. Stuck closed: rapid overheating with the gauge climbing fast, coolant bubbling in the header tank, and sometimes steam from under the bonnet.
How much does a Peugeot thermostat cost in South Africa?
AfricaBoyz stocks Peugeot thermostats from around R149 to R4,500 depending on model and whether it's a bare thermostat or full housing assembly. Request a free quote through our form with your engine code for the correct part and fitting estimate.
How long does it take to replace a Peugeot thermostat?
About an hour on most naturally-aspirated Peugeots. Turbo engines like the 1.6 THP take longer because access through the engine bay is tighter. Budget a coolant flush and refill at the same time — it's cheap insurance while the system is drained.
What happens if my Peugeot thermostat is stuck open?
The engine takes far longer to reach operating temperature, the heater barely warms the cabin and fuel economy drops noticeably. Long-term, constant cold running fouls spark plugs and contaminates the oil. Replace promptly rather than living with it.
Why won't my Peugeot reach operating temperature?
Stuck-open thermostat is the number one cause. Less commonly, a faulty coolant temperature sensor reports cold to the gauge even though the engine is warm. A workshop scan reads live coolant temp in seconds and confirms which part is at fault.
Learn More About Peugeot 508 Thermostats
Not Sure Which Thermostats Fits Your 508?
Share your VIN or engine code and our Peugeot team will cross-check the correct thermostats for your exact 508 variant.