Hyundai H100 Thermostats
We source thermostats for every H100 generation sold in South Africa, then check the fit against your VIN before it leaves the warehouse
What Are Hyundai H100 Thermostats?
The thermostat holds coolant in the block until the engine is up to temperature, then opens and lets it circulate through the radiator. The practical Hyundai question is whether yours is a standalone insert or part of a housing assembly — on several of the newer engines it is the latter, which means the part you actually need is considerably bigger than the one you pictured, and it usually arrives with the sensor already fitted. Symptoms point in a useful direction too: a thermostat stuck open gives you cold running, poor economy and a heater that never gets there, which is the failure we see most. Stuck closed is rarer and far more expensive, because it takes the head gasket with it.
Signs You Need New Thermostats
Before you order thermostats for a H100
Does one thermostats listing cover every H100?
No. Ordering thermostats for a H100 starts with the generation: Porter, Porter II and the H100 bakkie.Dropside, tipper and canopy conversions mean the load body is frequently not standard, so load-bed and rear-body parts have to be matched to the conversion rather than to the model.
Which engine is in my H100?
SA-market cars were sold with the 2.5 and 2.6 diesels as badged on the SA derivatives. The code stamped on the block settles it — the badge on the boot does not.
What do you need from me to quote thermostats?
Petrol or diesel, and whether the car has air conditioning. Air-conditioned and non-air-conditioned Hyundais take different radiators and fan assemblies, and the CRDi diesels add intercooler plumbing that the petrol cars simply do not have.
In South Africa the H100 is mostly small-business transport that is loaded to its limit daily, which is why clutch, driveline and front-suspension parts dominate demand rather than trim or electronics. That is the wear pattern we stock and source against.
H100 Thermostats: Common Questions
Will thermostats from another H100 fit mine?
Not automatically. The H100 sold in South Africa as Porter, Porter II and the H100 bakkie, and dropside, tipper and canopy conversions mean the load body is frequently not standard, so load-bed and rear-body parts have to be matched to the conversion rather than to the model. Send us the generation code off your VIN plate and we will confirm it either way before anything is dispatched.
Can you source thermostats for the H100 if local stock is dry?
Usually, yes. The H100 no Kia equivalent — a dedicated light-commercial cab-over platform, which gives us a second catalogue to search when Hyundai-listed stock runs out. We will tell you what we are quoting rather than leaving you to guess.
Is my thermostat a standalone part or a whole housing?
On several of the newer Hyundai engines it is part of a housing assembly rather than an insert, which means the part you need is considerably larger than the one you pictured and usually arrives with the sensor already fitted. Send the engine code and we will tell you which of the two you are buying before you commit.
What does a stuck thermostat do on a Hyundai?
Stuck open is the common one: the engine runs cold, the heater never really warms up, the gauge sits below the middle and economy drops. Stuck closed is rarer and far more serious — the gauge climbs fast, coolant bubbles in the header tank, and the head gasket is what pays for it.
What does a Hyundai thermostat cost in South Africa?
Our supplier network stocks Hyundai thermostats from around R149 to R4,500 depending on model and whether it is a bare thermostat or a full housing assembly — which is exactly why the engine code matters more than the model name here. Request a free quote with the code for the correct part and a fitting estimate.
How long does the job take?
About an hour on most of the naturally aspirated engines. The turbocharged units are tighter to get at and take longer. Have a coolant flush and refill done at the same time; the system is already drained, so it costs very little extra to do it properly.
My Hyundai never reaches operating temperature. What is it?
A thermostat stuck open, nine times out of ten. The less common cause is a coolant temperature sensor reporting cold to the gauge while the engine is actually up to temperature. A workshop scan reads live coolant temp in seconds and tells you which of the two you are chasing, which is cheaper than replacing both.
Learn More About Hyundai H100 Thermostats
Tell us which H100 you have
The H100 sold here as Porter, Porter II and the H100 bakkie, and they do not share one parts list. Give us the generation code and we will do the rest.