Used Radiators & Cooling Parts
The cooling system keeps the engine at the right temperature: not so hot that it seizes, not so cold that it never warms up. The radiator is its heart, with the water pump, thermostat and fans behind it. This page explains what the cooling system does, the signs it is failing, what to check on a used part, and how to enquire.
Call 07961 404768WhatsApp 07961 404768What the cooling system does
An engine makes a great deal of heat, and the cooling system carries it away. Coolant is pumped around the engine, picks up the heat, and flows through the radiator, where air passing over thin fins cools it down again. The thermostat holds the coolant back until the engine is warm, then lets it flow.
The water pump drives the coolant round, the fan pulls air through the radiator when the car is slow or standing, and the expansion bottle holds the extra coolant as it heats and swells. If any of these parts fail, the temperature gauge climbs — and an overheated engine can be ruined in minutes.
Signs cooling parts may need replacing
Cooling trouble shows up on the temperature gauge and under the bonnet. Any sign of overheating or coolant loss should be checked promptly, because the damage from running hot is often permanent.
- The temperature gauge climbing into the red, or a warning light
- Coolant disappearing with no visible puddle underneath
- Steam or a sweet smell from under the bonnet
- The heater blowing cold when the engine is warm
- A puddle of green, pink or blue liquid under the car
What to check before buying a used cooling part
Cooling parts are matched to the engine, and a radiator from the wrong car may have the hose connections in the wrong place. Check the part number first, then look the part over for leaks and damage.
- The part number matches, and hose connections are in the right place
- The radiator core is straight, with no crushed fins or leaks
- The water pump spins freely and the bearing has no play
- The thermostat housing is not cracked or corroded
- Your mechanic has confirmed the part will fit your car
How to enquire about a used cooling part
Give the registration, make, model and year of your car, and say which part of the cooling system you need — the radiator, the water pump, the thermostat, or a fan. The parts are specific to the engine, so the name alone is not enough.
Call 07961 404768, or send the details through the parts enquiry form. Describe what the car is doing — overheating, losing coolant, or the heater blowing cold — so the right part can be checked first.
Frequently asked questions
What does a radiator do?
A radiator cools the coolant that carries heat away from the engine. Hot coolant flows through thin tubes in the radiator, and air passing over the fins takes the heat away. Without it, the engine would overheat in minutes, so a leaking or blocked radiator needs attention quickly.
Why is my car overheating?
The usual causes are a leak in the cooling system, a failed water pump, a stuck thermostat, or a radiator that is blocked or damaged. A slipping fan belt or a fan that never runs can do it too. Check the coolant level first, then have the system looked at before driving far.
What is a water pump?
A water pump is the part that pushes coolant around the engine and through the radiator. It is usually driven by a belt and has a bearing that wears over time. A failing pump leaks from its seal or rattles, and the engine overheats because the coolant stops moving.
What is a thermostat?
A thermostat is a valve that holds coolant back until the engine is warm, then opens to let it flow through the radiator. A thermostat stuck shut makes the car overheat, while one stuck open leaves the engine cold and the heater blowing cold air.
What should I ask about a used cooling part?
Ask for the part number and whether the radiator matches your car, and whether it is for a petrol or diesel engine. Radiators differ by engine and by air conditioning, so both matter. Give the registration when you enquire, and say whether the car has air conditioning.
Related pages
Looking for a used radiator or cooling part?
Call 07961 404768WhatsApp 07961 404768Autos Craft Ltd · 295 Cherrywood Rd, Birmingham B9 4UU, United Kingdom · Open 24 hours