What the Generator Engine Radiator (Replacement) does
The radiator sheds the engine's heat to the air. Over years its fins clog with dust, its tubes scale up inside, and its tanks or core start to leak — and the generator begins to overheat on hot days or heavy load.
A blocked radiator can sometimes be cleaned or re-cored; a corroded or badly damaged one is better replaced. We size replacements to the engine and the set's enclosure.
Signs it needs replacing
- Overheating on load or on hot afternoons, with the thermostat and belt in order.
- Coolant leaks from the core or tanks.
- Fins blocked, flattened or corroded.
- Scale or sludge visible in the coolant.
Get the right part first time
Send us these on WhatsApp and our engineers will confirm the exact part before you pay:
- Engine model and serial number.
- Core dimensions and hose positions (photos help).
- A photo of the generator nameplate (make, model, kVA, serial number).
Fitting notes
Flush the cooling system before fitting a new radiator, fill with the correct coolant mix and bleed air thoroughly. Check the fan, shroud and belt — a missing shroud alone can cause overheating.
Frequently asked questions
Repair or replace?+
Light blockage can often be cleaned; heavy internal scale, corrosion or multiple leaks usually make replacement the reliable choice.
How long does a replacement take?+
Typically 5–10 working days to supply, depending on the engine. We can often keep a critical site running in the meantime.
Why does my generator overheat only on hot days?+
The cooling system has lost capacity — usually blocked fins or internal scale — and only shows it when air temperature and load are high.