Car Radiator repair & replacement made easy

The radiator is a component in the engine that keeps the car's engine coolant cool. It consists out of radiator core with to each side a small tank through which the coolant flows. As the coolant flows through the radiator core it is cooled by the cold air that the radiator fan channels through the core. In turn the coolant's heat dissipates and the coolant is directed back to the engine's cooling channels.

• Mechanic will inspect the radiator and ancillaries for leaks.
• Mechanic will subject the cooling system to a pressure test.
• If necessary, the mechanic will replace the radiator.
• Mechanic will advise if any other parts ought to be replaced (like the radiator hoses).
• Mechanic will refill the cooling system with engine coolant.
• Mechanic will run the engine and, if necessary, test drive the car (check for leaks again).

Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a car radiator replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

• When the 'Check Engine' warning light is on.
• When the engine runs at a higher temperature than usual (overheating).
• When there are leaks underneath the car (this is usually red, green or yellow fluid).
• When there are leaks / moist patches on or around the radiator.

On average, car radiator replacement times can range from under 1 hour to over 2.5 hours with an average of around 1.5 hours. The time that the job takes will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

Over time problems can occur with the radiator as it is subject to significant temperature fluctuations. Seeing that the radiator is a component that is especially prone to wear it should always be serviced as and when stipulated in the guidelines set out by your car's manufacturer.

A leaking radiator should be addressed as soon as possible seeing that a lower level of engine coolant can lead to an overheating engine and severe engine damage. Additionally, radiators can also clog up with dirt, leading to the engine overheating as less coolant can run through the radiator.

Should you experience an issue like this or those listed earlier, it is advisable to have the radiator inspected and, if necessary, have it replaced.

If you suspect there is any issue with your radiator or there are concerns about its age or condition, book an inspection with a professional mechanic immediate effect. Driving with a broken radiator can lead to the engine overheating and could cause severe damage to the engine.

If the radiator leaks it is common for the radiator to be replaced. Cost for a radiator replacement will depend on a number of factors but generally can range from £150 to £350.

If the radiator is broken usually a radiator replacement is required. Cost for a radiator replacement will depend on a number of factors but on average costs £200.

A faulty radiator should not normally lead to an MOT failure as the part is not checked as part of an MOT. Of course if you do have an issue with the radiator it's advisable to get this addressed as soon as possible to prevent further issues and potential engine damage.

The most common cause of a radiator leak is rust or corrosion in the radiator. The radiator is subject to heating and cooling as coolant flows through it. On top of that vibrations and damage caused as you drive the vehicle. Meaning the radiator's condition can deteriorate significantly over time causing leaks.

Additionally, a leak can be caused by a loose or cracked hose, or a problem with the radiator cap.

Yes, it is likely that a car radiator issue is covered under the manufacturer warranty (provided the car remains under warranty). In the UK, manufacturer warranties typically provide protection for mechanical or electrical failure of components such as an engine, fuel pump or radiator. It is important to check with the manufacturer or the warranty company if this is covered or reimbursed before proceeding with the repair or replacement of a car radiator.