6.7 Cummins Head Gasket Replacement Cost: Tips to Save Money

The cost of a 6.7 Cummins head gasket replacement can vary depending on several factors, such as the model of the engine, the condition of the existing engine components, and the labor rates charged by the repair facility.

In this blog post, we’ll explore the 6.7 Cummins head gasket replacement cost and what factors can impact the overall price.

6.7 Cummins Head Gasket Replacement Cost

On average, the cost for this type of repair can range from $1,500 to $3,500 or more. This cost includes the cost of the replacement head gasket and other necessary engine components, such as bolts or studs, which may need to be replaced during the repair process.

While it may seem expensive, timely replacement of the head gasket can prevent more significant and costly engine damage.

Factors affecting the cost of 6.7 Cummins head gasket replacement

Here are the various factors that can affect the cost of 6.7 Cummins head gasket replacement.

Type of Repair Needed

The type of repair needed is a significant factor in the cost of head gasket replacement for a 6.7 Cummins engine.

Replacing the head gasket on a 6.7 Cummins engine can cost between $1,000 and $3,000, depending on the severity of the issue. 

If the issue is severe, the cost can be higher. However, if the repair involves replacing the entire engine, the cost can be much higher, with estimates ranging from $15,000 to $17,000.

Parts Required

The cost of parts required for head gasket replacement is another significant factor in the overall cost of repair.

Mild steel fire rings are used as a replacement for the center rings in the factory 6.7L MLS unit gasket, which makes way for the fire rings, and these rings are .105 inches thick. 

Additionally, if the repair requires ARP 625 studs, which are high-performance head studs, it can add up to $2,510.26 to the overall cost of repair.

Labor Charges

The cost of labor charges for head gasket replacement can be approximately $980, but the cost can vary depending on the shop and location.

If the owner opts to perform the repair themselves, they could save on labor charges, but the process can be complex and time-consuming.

DIY vs Professional head gasket replacement

we will explore the differences between the two options.

DIY Head Gasket Replacement

Here are some pros and cons of DIY head gasket replacement:

Pros:

• Lower cost: DIY head gasket replacement can be significantly cheaper than having a professional do the work. This is because you are only paying for the parts and not the labor.

• Control over the process: When you do the work yourself, you have complete control over the process. 

• Sense of accomplishment: Completing a head gasket replacement on your own can give you a sense of accomplishment and satisfaction.

Cons:

• Risk of mistakes: Head gasket replacement is a complex task, and if you make a mistake, it can lead to further damage to your engine. 

• Time-consuming: Doing a head gasket replacement on your own can be time-consuming, especially if you are not experienced in this type of work. It may take you longer to complete the job than a professional mechanic.

• Lack of warranty: If something goes wrong with your engine after you have completed the head gasket replacement, you will not have any warranty to fall back on.

Professional Head Gasket Replacement

Professional head gasket replacement involves taking your car to a mechanic or auto repair shop to have the work done.

Here are some pros and cons of professional head gasket replacement:

Pros:

• Expertise: A professional mechanic has the training and expertise to complete a head gasket replacement quickly and efficiently.

• Warranty: When you have a professional mechanic do the work, you will typically receive a warranty on the parts and labor.

• Time-saving: A professional mechanic can complete a head gasket replacement much faster than someone who is not experienced in this type of work.

Cons:

• Higher cost: Professional head gasket replacement can be significantly more expensive than doing the work yourself. This is because you are paying for the mechanic’s labor as well as the parts.

• Lack of control: When you take your car to a mechanic, you are giving up control over the process. You have to trust that the mechanic will do the work to your satisfaction.

• Less sense of accomplishment: When you have a professional do the work, you will not have the same sense of accomplishment that you would if you completed the head gasket replacement on your own.

How to prevent 6.7 Cummins head gasket failure?

Here is how to prevent 6.7 Cummins head gasket failure.

1. Choose the right head gasket

The choice of head gasket can significantly impact the engine’s longevity. A factory 6.7L MLS head gasket is commonly used.

For instance, removing the center rings and replacing them with fire rings made from mild steel can help protect the gasket and prolong its lifespan.

2. Maintain the engine cooling system

A well-maintained engine cooling system is crucial in preventing head gasket failure. Regularly check the coolant level and ensure that it is topped up.

Also, inspect the cooling system hoses and belts for any signs of wear or damage and replace them as necessary

It is also important to flush the cooling system regularly to prevent the buildup of contaminants that could clog the cooling passages and reduce the system’s effectiveness.

3. Use proper engine oil and change it regularly

Using the correct engine oil and changing it regularly can also prevent head gasket failure. The oil helps to lubricate the engine’s moving parts and dissipate heat. 

Using low-quality or incorrect oil can cause excessive heat and put a strain on the head gasket.

Therefore, always use the recommended engine oil and change it at the recommended intervals.

4. Inspect and repair any leaks promptly

An engine leak, no matter how small, can lead to overheating and head gasket failure.

Inspect the engine for any signs of leaks, such as oil or coolant puddles under the vehicle. Address any leaks promptly to prevent further damage to the engine.

5. Monitor engine performance and temperature

Monitoring engine performance and temperature can help identify potential issues before they turn into costly repairs.

Watch for any signs of overheating or coolant loss, such as low coolant levels, a sweet smell from the exhaust, or white or blue smoke from the tailpipe.

Are there any alternatives to the 6.7 Cummins head gasket replacement?

Yes, there are alternatives to 6.7 Cummins head gasket replacement. Here are some options:

Preventive maintenance kits: 

Many 6.7 Cummins owners turn to preventive maintenance kits to help avoid the cost of replacing the head gasket.

These kits include upgraded components like head studs, gaskets, and seals to improve the reliability and longevity of the engine. 

Upgraded head gaskets: 

Upgraded head gaskets are available for the 6.7 Cummins which offer improved sealing and durability over the factory gasket.

These gaskets are typically made from higher-quality materials and can handle higher levels of boost and cylinder pressure. 

Fire ring and MLS gasket kit: 

A “bomb-proof” top-end kit is available for the 6.7 Cummins that includes fire rings and a multi-layer steel (MLS) head gasket.

This kit offers improved sealing and durability over the factory components and is designed for high-performance and racing applications. 

Engine oil cooler gasket replacement: 

In some cases, a leaky engine oil cooler gasket can cause symptoms similar to a blown head gasket.

Replacing the oil cooler gasket is a simpler and less expensive repair than a head gasket replacement, and may solve the issue. 

Frequently asked questions 

Conclusion:

By understanding these costs and the factors that can affect them, you can make an informed decision about how to proceed with the repair.

It’s always recommended to work with a reputable mechanic to ensure a high-quality repair and a longer lifespan for your engine.