Cooling system

Car cooling system: buy a radiator, water pump or thermostat

Updated 20 October 2026

Overheating is not only about the radiator

When the temperature needle climbs, there are several possible causes: a clogged or leaking radiator, a faulty thermostat, a worn water pump, a fan that does not switch on, or an air lock. So do not rush to buy. First find out whether coolant is leaking, whether the radiator heats unevenly and whether the fan works. A wrong diagnosis costs more than the part itself. One more tip: if the coolant level drops but there are no puddles, the leak may be hidden in the pump or the head gasket, and that is a job for a mechanic. In hot summer traffic this is worth sorting out early.

Your car’s equipment changes the part

A radiator for one model often comes in several versions. They depend on the engine, on whether there is an air conditioner and on the gearbox type: an automatic often needs a radiator with a built-in oil cooler. So state separately in your request whether you have AC and which gearbox. For fans, the number of connector pins and the power matter.

What to put in your request

• Which part — radiator, water pump, thermostat, fan, expansion tank, hoses, temperature sensor.
• Make, model, year and body — for example, Suzuki Ertiga, 2016.
• Engine — capacity and type: 1.5 petrol.
• Equipment — automatic or manual, with or without AC.
• Original or aftermarket — for example, a known aftermarket brand.
• Condition — new or used.
• Part number — if you know it, from the old part.
• City, delivery and budget.

Example: “I need a cooling radiator for a Suzuki Ertiga, 2016, 1.5 petrol, manual, with AC. New, a reputed brand. Courier delivery to Al Ain. Budget up to AED 180.”

How to compare offers

Create a request: auto parts sellers reply in the chat with the brand, the condition of the part, the price and the dispatch date. BlaBlaPrice shows the offer that is best on content first, with reviews of the seller next to each. Sellers compete because they can see where their offer stands, and they often improve their terms.

For radiators, compare the material of the tanks and the core: an aluminium core with plastic tanks is typical, while the thickness of the core and the number of rows affect efficiency. For a pump, ask about the impeller material (metal or plastic) and whether a gasket or seal ring comes with it. A pump is often replaced together with the timing belt, so ask whether a kit is sold. For a thermostat, check the opening temperature. For a used radiator, ask for photos and confirmation that it has no leaks and is not clogged with scale.

Common mistakes

Buying a radiator without taking the AC into account. Not changing the coolant and hoses when fitting a new part. Topping up with the wrong fluid by mixing different types. Not bleeding the air out of the system. To avoid missing related parts, see car air conditioning and heating and engine.