Service, Repairs & MOT

Head gasket repair

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  • 12-months parts guarantee
  • Honest pricing
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Why choose the RAC for a head gasket repair?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running. We'll give you results you can rely on at a price you can afford.

Close up of an RAC Mobile Mechanic underneath a car

Book a head gasket repair

The head gasket is a vital seal between your engine block and cylinder head, preventing leaks and keeping engine compression. A damaged head gasket can lead to overheating, loss of power, and severe engine damage.

Any work done will meet the high standards set by the RAC.
We’re friendly, straightforward and jargon-free

Book a diagnostic

A mechanic will check your car for faults and talk you through any repairs you might need. There are various ways to check for faults, which could include a physical examination or plugging in to check your car’s onboard engine management system.

We’ll look for any mechanical or electrical problems. If we need to, we’ll also check your car’s onboard engine management system. Depending on your car and issue, this will usually include: – Engine – Power steering – Brakes – Transmission – Exhaust system – Fuel injection system – Cooling system and air flow – Sensors

Introduction

A head gasket is a crucial part in your vehicle's engine. It plays a vital role in maintaining its performance and reliability. When it fails, it leads to engine problems and costly repairs. It’s important to know what a head gasket is, how to spot failure symptoms, and when to replace it. This will save you from damage and expenses.

What is a head gasket?

A head gasket sits between the engine block and cylinder head. It seals the combustion chambers and stops coolant and oil from mixing. Its main function is keeping the pressure needed for combustion. This is to make sure the coolant and oil flow through the engine without leaking into each other. It’s a seal that’s essential for the engine’s longevity.

Head gasket repair cost

The cost of repairing or replacing a head gasket can vary on different factors:

  • Vehicle make and model: The engine's design complexity and cost of part costs affects the expense.
  • Labour costs: Mechanic or garage rates vary depending on location and skill level.
  • Extent of damage: If the head gasket failure has caused extra damage to the engine, the repair costs will be higher.

Get a detailed quote from your mechanic to know the vehicle costs.

Blown head gasket symptoms

Detecting a blown head gasket early can stop more engine damage. Things to look out for include:

  • Overheating engine: Constant overheating can mean a bad head gasket.
  • White smoke from exhaust: This means that coolant is leaking into the combustion chamber.
  • Milky oil: If the oil appears frothy or milky, it means that coolant is mixing with the oil.
  • Loss of coolant: Coolant loss without visible leaks can be a sign.
  • Poor engine performance: Misfires, rough idling, and loss of power could mean head gasket failure.

When to replace a head gasket

Replace a head gasket as soon as you notice symptoms. This stops more damage.

  • Significant overheating: High engine temperatures can warp the cylinder head. This means costly repairs.
  • Major oil or coolant leaks: Leaks lead to engine failure.
  • Frequent misfires: Regular misfires need to be fixed.

Quick detection and repair of head gasket problems are vital to your vehicle's performance. It also avoids expensive engine damage. Regular maintenance and knowing the symptoms help you act quickly.

Frequently Asked Questions on head gasket repair

You should never drive with a blown head gasket. This can cause severe engine damage. The car may overheat and the engine could fail. This leads to even more cost.

Fixing a head gasket is often worth it, especially if the vehicle is otherwise in good condition. Repairing it can prevent further engine damage and extend the vehicle's lifespan.

Changing a head gasket involves labor-intensive work and the cost can range from £500 to £1,500. It’s important to get an accurate quote from your mechanic.

The cost of repairing a head gasket typically ranges from £500 to £1,500, depending on the vehicle make and model, labor costs, and the extent of any additional damage.

Changing a head gasket involves labor-intensive work and the cost can range from £500 to £1,500. It’s important to get an accurate quote from your mechanic.

A blown head gasket means that the seal between the engine block and cylinder head has failed. This can lead to coolant and oil mixing, causing engine overheating and inferior performance.

Head gaskets can be replaced at most automotive service centres and by certified mobile mechanics. It’s important to choose a reputable and experienced service provider.

Some vehicle warranties cover head gasket repairs, especially if the failure occurs within the warranty period. Check your warranty terms for coverage details.

Most standard car insurance policies don't cover head gasket repairs. However, an extended warranty or mechanical breakdown insurance might.

If your leased car's head gasket fails, you usually need to fix it. Check your lease agreement for details.

The cost of a new head gasket depends on the type of vehicle and where you’re located. It usually also includes labour.

Different garages and mechanics may do different checks. Talk to your mechanic to know what services they provide.