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Can a Car Radiator Be Repaired? (Explained)

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Last Updated on: 7th September 2023, 12:38 am

The radiator is an essential part of every vehicle’s cooling system, but like all mechanical parts, radiators can sustain damage and break. So, can you repair a damaged radiator?

If the radiator is only experiencing a coolant leak, a sealant could be a viable repair. However, for more significant damage, you may need to replace the radiator entirely.

In this article, we’ll see if a car radiator can be repaired, explain the symptoms of a coolant leak, and discuss the cost of repairing.

a damaged car radiator

Can a Car Radiator Be Repaired?

Yes, a car radiator can be repaired, but the extent of the leak and damage will guide the decision on whether a repair is enough or if a replacement is required.

In certain situations, minor cracks or leaks could be easily repaired using radiator epoxy or coolant leak sealant.

However, in instances where the radiator suffers from severe damage or corrosion (such as being hit by debris from the road or rusting) a replacement may be needed instead.

Cost of Repairing or Replacing

The cost of repairing or replacing a car radiator can be different based on the extent of the damage as well as the vehicle’s make and model.

  • Typically, the cost of replacing a car radiator ranges from $338 to $667 (approx. £258-£501 or €290-€563).
  • The cost of fixing a car radiator using epoxy or coolant leak sealant generally falls below $30 (approx. £22, €25), and this task can be handled on your own without the need for a mechanic.
  • The cost of labor can contribute to the overall expense when repairing or replacing the radiator.

You should explore various options and get multiple opinions.


A car radiator experiencing a coolant leak can indeed be repaired. Usually, minor cracks or coolant leaks can be conveniently addressed using radiator epoxy or sealant. Nonetheless, if the radiator has suffered severe damage or corrosion, it might need a replacement.

The cost of fixing or replacing a car radiator can vary based on the level of damage and the vehicle’s make and model.

  • Andy Lewin

    Andy Lewin is a senior mechanic, ASE qualified master technician, and an experienced automotive engineer.He's passionate about serving the automotive community with the highest-quality and trustworthy information on all things automotive. He loves to write about car repairs, maintenance, car modifications and tuning, faults, and much more.

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