culture and society | May 28, 2026

How much does a head gasket replacement cost?

The average pricing for a head gasket replacement is from $1200 to $3000+. With the average mechanic asking from $30 to $100+ per hour, it is easy to see how the labour intensiveness of a head gasket replacement can drive costs high.

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Hereof, is it worth fixing a blown head gasket?

Replacing or repairing an engine with a blown head gasket is a costly and time-consuming job and can take up to several days of work to get it done. It is still difficult and time-consuming labor, but it's still cheaper and faster than repairing the damage caused by the broken head gasket.

Additionally, how much does it cost to replace a head gasket? The average cost for a head gasket replacement is between $1,170 and $1,496. Labor costs are estimated between $909 and $1148 while parts are priced between $261 and $348. Estimate does not include taxes and fees.

Accordingly, can you drive a car with a blown head gasket?

Leaking coolant and combustion gases can cause high temperature gradients leading to erosion of the leak area and possible cracking. For all these reasons we don't recommend driving with a blown head gasket. The good news is there is a quick and easy way to seal your blown head gasket and keep your car on the road.

How do I know if my Headgasket is blown?

How To Tell if a Head Gasket Is Blown:

  1. Coolant leaking externally from below the exhaust manifold.
  2. White smoke from the exhaust pipe.
  3. Bubbles in the radiator or coolant overflow tank.
  4. Overheating engine.
  5. White milky oil.
  6. Fouled spark plugs.
  7. Low cooling system integrity.
Related Question Answers

Does a blown head gasket ruin an engine?

Usually, a blown head gasket damages the engine because the engine overheats. This is because the damaged gasket can lead to coolant loss, either directly via the gasket damage or from the cylinder pressure increasing the pressure in the cooling system and coolant being pushed out of the overflow.

How does a blown head gasket happen?

Overheating The biggest cause of a blown head gasket is overheating. Usually, the head gasket armor around the cylinders can become crushed, and if this happens, the seal is lost and your engine will lose compression, leak coolant, and the gasket will erode.

Will Stop Leak fix a blown head gasket?

There are many stop-leak products that are only designed to be a temporary fix, but not ours. A blown head gasket fix can be as easy as dumping a bottle of sealant in your radiator, and you're good to go. The seal created from our product is as permanent as replacing the head gasket, but with less money and time.

Is it better to replace head gasket or engine?

Bearing damage can come from excess heat but is most often a product of having coolant in the engine oil. If your head gasket leak has caused this problem you are almost always better off replacing the whole engine as a new head gasket will stop the leak but bearing damage has probably already been done.

What does blown head gasket mean?

An external leak is visible outside the engine, an internal leak means that coolant can seep into oil passages or erode the compression sealing ring in the head gasket allowing coolant to enter the cylinder or compression to enter the cooling system. This is what we call a “blownhead gasket.

How much is a car with a blown head gasket worth?

Depending on the complexity of the engine in the make and model of your vehicle, some V6 and V8 engines have two heads. The mechanic may recommend replacing both heads, which increases the cost. Generally, you're looking at anywhere between $1,000 - $3,000 to repair a blown head gasket.

How long does head gasket sealer last?

It may last three weeks or three years. There is no way guarantee. There may be other head gasket sealants that work just as well as Bar's Leak. It's up to you to decide which is the best head gasket sealer.

Do head gasket sealants really work?

A head gasket sealer works when you pour it into the radiator. A real fix is to replace the head gasket, but this is costly. A head gasket sealer is a good temporary fix. The amount of sealant you use depends on how big your engine is.

Can a bad thermostat cause a blown head gasket?

If your thermostat remains closed and stuck closed the coolant will not flow thru your radiator, resulting in increased engine temperature which results in overheating the engine. Blown head gaskets most of the time is caused by the cylinder head warping, not always mind you, sometimes the gaskets do give out.

What are the symptoms of a blown head gasket on a car?

Blown head gasket symptoms:
  • Coolant leaking from below the exhaust manifold. This is the most obvious and easy diagnosis.
  • White smoke from the exhaust pipe.
  • Loss of coolant with no visible leaks.
  • Overheating engine.
  • Bubbles in the radiator or overflow tank.
  • White, milky oil.
  • Low power or poor running engine.

Why is my car losing coolant but not overheating?

If you're struggling to find the source of your coolant leak there's a chance it is caused by a blown head gasket. If a head gasket fails it may cause a serious coolant leak and overheating or may be a small leak that is hard to detect. Worse yet the coolant may try to mix with your engine oil.

Does white smoke mean blown head gasket?

White Exhaust Smoke White smoke billowing out of your exhaust means that coolant is likely leaking into the cylinders. This usually happens when there has been a breach in the head gasket, which makes the coolant create this white steam. Have it taken care of before the breach gets bigger and bigger.

Can I replace a head gasket myself?

Head gasket replacement is not a job for the average do-it-yourselfer. While a head gasket expiring due to old age is rare, it usually means everything else is worn out to the point of replacement as well. Cracking the head off the engine and peering inside may reveal that everything else got fully cooked, too.

Why is head gasket replacement so expensive?

The blown head gasket cost is so high because of the labor typically involved, in addition to the head gasket part cost. Simply put, there are a lot of head gasket labor hours required in the repair. Essentially, the mechanic needs to start by disassembling the entire engine, which takes a great deal of time.

How long does it take to fix a cylinder head?

If you use a chemical sealant (and it works the first time), a few hours at most. If you have a garage make the repair by dis-assembling the upper half of the engine and replacing the head gasket; 2-3 days. If you perform the same procedure yourself; 2-3 days. You can "bodge" the repair and do it in less than a day.

Will ChemiWeld fix a head gasket?

chemiweld for blown head gasket. Hi All, ChemiWeld is a very good product for what is was designed for - a temporary fix for cracks in heads etc - it is not a radiator sealer (like Bars Leak) and it doesn't clog radiators - however it is not designed to fix head gaskets.

Is it worth fixing Subaru gaskets?

The engine comes out of the car to replace head gaskets – drive belts and timing belts can be replaced for the cost of parts while some timing components and clutch replacement add a minimal amount of labor. 3. If it's been working well for you before the head gasket failure, it's likely worth fixing.

How many hours does it take to replace a head gasket?

And how long does it take to fix a head gasket? Anything from six hours to a few days, depending on the severity of the failure. A blown head gasket is one of the biggest failures your car can suffer, and to fix it properly takes time.

Will Subaru pay for head gasket repair?

Subaru will prepay the dealer for the head gaskets, but only if you have very good service history from the dealer.