How Much Does A Diesel Engine Rebuild Cost?

With overhaul costs ranging from $20,000 to $30,000, deciding whether or not to have your truck’s engine overhauled might be difficult.

There are numerous reasons to consider a vehicle overhaul. The first reason is the most obvious–you suffered an engine failure and now have no other option. That was a simple decision, but what about the times when it’s not so obvious?

First and foremost, an engine overhaul entails disassembling, cleaning, inspecting, repairing, and testing your diesel engine following factory-approved procedures. In most cases, new pistons/liners, cylinder heads, injectors, bearings, gaskets, and seals are required.

Now that you’ve mastered the fundamentals, consider the following three questions to identify the best path to a successful engine overhaul:

Does your truck’s engine have high mileage or high hours on it?

Trucks that are well-maintained can travel over 1,000,000 kilometers. However, their owners must keep an eye out for symptoms of age and plan regular maintenance inspections. Trucks with more than 700,000 kilometers on the clock should have their engines overhauled, according to industry standards. If your truck has never been taken apart and is approaching that mileage barrier (or potentially even double that), it’s time to consider an overhaul. A head gasket, a handful of injectors, or a turbo cannot be substituted for a comprehensive engine overhaul. Although a catastrophic breakdown is unavoidable, you can keep ahead of it by completing an overhaul. You’ll be driving on borrowed time if you don’t.

Is it cheaper to rebuild an engine or replace it?

Yes. The cost of a scheduled overhaul is almost usually cheaper than the cost of a new engine. Rebuilding an engine to repair it is frequently less expensive than purchasing a new one. Rebuilding an engine can save you up to half the cost of a new one.

However, rebuilding isn’t always the best solution.

If rebuilding an engine costs as much as buying a new one, your mechanic should tell you up front.

At Specialized Truck and Auto, we provide transparent pricing up front.

You can then decide whether to rebuild, acquire a new engine, or replace your car based on this information.

How much does it cost to rebuild a diesel?

How Much Does A Diesel Engine Rebuild Cost? The typical cost of a diesel engine replacement is between $5,500 and $11,000. In the case of a diesel engine rebuild rather than a replacement, the rebuild will cost between $3,000 and $4,500.

How much does it cost to replace a diesel engine?

To put things in perspective, a Bugatti Veyron long block will set you back roughly $360,000, while a Ferrari Enzo long block will set you back about the same. This does not include delivery, however it does come with a 30-day money-back guarantee. Then, at $15,000, you can get a whole LS7 crate engine for a Corvette Z06 from GM. Then there’s the $6500 for a 6.3-liter LS3 crate engine for the newer Chevrolet Camaro SS. This is likely to be the price of many domestic V-8 automobiles. You can obtain a rebuilt Diesel engine for between $7000 and $13000, and a Ford long block for between $3000 and $4500. A V-8 long block for an ancient Rolls Royce will set you back around $8500, while the more recent and improved engines from Rolls Royce will set you back over $45,000.

When should a diesel engine be rebuilt?

Most diesel engine original equipment manufacturers (OEMs) recommend an engine overhaul or rebuild every 12,000 to 15,000 hours when compared to fixed equipment, where the mean period between rebuilds is measured in years. Even with oil analysis, which allows the rebuild period to be maximized, engine life in off-highway applications is limited to 20,000 to 25,000 hours.

So, why does a car engine have such a short lifespan? The issue is more about the running circumstances and surroundings of a normal engine than it is about maintenance. Engines have a rough life, with temperatures approaching 200 degrees Fahrenheit, high duty and shock loads, internal impurities such as soot, acids, and wear debris, and the danger of fuel or glycol leaks.

External pollution in the form of dust and grime, which is drawn into the engine every minute of operation through the air intake, is perhaps the largest engine killer. Particle pollution can be fatal to engines; even minuscule particles the size of a red blood cell can shorten an engine’s life expectancy significantly. In reality, research conducted by General Motors, Cummins, Inc., and other engine OEMs have shown that particles ranging in size from 0 to 5 microns and 5 to 10 microns are three times more likely than larger particles to cause wear in crucial piston rings and bearings (Figure 1). To put that into perspective, particles as little as a tenth of the diameter of a human hair can cut an engine’s life expectancy in half or more! These particles, also known as silt-sized particles, are so minute that a high majority of those swallowed into the engine air intake manifold pass right through the air filter, which is designed to filter out rocks and boulders by comparison.

Why is it that most full-flow engine oil filters are at best 70% efficient at removing 10 um particles and are effectively ineffective at removing silt-sized particles, despite these facts being widely understood by OEMs, lubrication engineers, and filter manufacturers alike? The answer is primarily a matter of flow. There is always a compromise between flow rate and filter efficiency with each filter. The flow rate of most filters decreases dramatically as the micron rating and filter efficiency improve. The smaller pore diameters required to catch smaller particles generate a larger barrier to oil flow, as should be clear. However, simple physics exacerbates the problem: To retain the same flow rate while halving the micron rating, say from 10 to 5 microns, most mechanical filters would require a fourfold increase in filter surface area. It is nearly hard for filter makers to drop the micron rating to be more efficient in removing silt-sized particles while maintaining appropriate flow rates because of this, and in part due to physical limits in the size of an engine filter.

Is that all there is to it? We have no choice but to accept the fact that the most hazardous particles to an engine will be present in an engine, with no way of removing them? Wrong! Silt particles may be effectively removed from engines by thinking outside the box, with a dramatic influence on engine life. Consider the following scenario to demonstrate the effect:

The goal of a maintenance crew at a 25,000-acre surface coal mining operation in Montana was to reduce direct maintenance expenses while also prolonging the engine’s operational life. They were well aware that particles that the OEM full-flow filtration was not meant to filter were reducing the engine’s service life. The mine created a strategy to minimize silt-sized particles from their CAT 992G bucket loaders equipped with CAT 3508B engines, starting with their CAT 992G bucket loaders equipped with CAT 3508B engines. Initial oil analysis data on one of the mine’s 992Gs revealed a particle count of 22/21/18, with copper and iron values of 118ppm and 53ppm, respectively, which are typical of the fleet. Maintenance employees also stated that a normal engine “top end” overhaul interval was around 12,000 hours, and that when engines were torn down, they were often very “filthy” inside, with indications of cylinder scuffing. Through an aggressive contamination management plan, the team set out to reduce in-service contamination levels.

An oil study was performed 931 hours after they improved their oil filter to see if any gains in oil cleanliness had been made. ISO cleanliness levels reduced from 22/21/18 (c) to 17/16/13 (c), soot levels remained at or below 0.1 percent volume, and iron levels dropped from 53ppm to 7ppm, much to their astonishment. The mine has estimated a four-fold life extension based on this and typical life-extension tables (Figure 2), resulting in a savings of $129K over five years, or a 216 percent return on their investment (Table 1). This is only one of many examples that show how enhancing slit particles in engines can improve performance.

So, how did they pull it off? As seen in Figure 3, the answer is pretty straightforward. A little slipstream of oil is taken after the full-flow filter using a flow control valve, without affecting the flow of oil within the engine. Only 10% of total oil flow is eliminated at any given time by managing oil flow through the valve, which is not high enough to destroy the engine. At normal engine oil pressure, this side stream of oil is routed through a depth media filter with a 99.9% efficiency rating at 3 microns (

How much does a typical engine rebuild cost?

I’m sure you’re curious about the expense of an engine rebuild. It’s not as simple as putting a hard and fast figure on it. This is due to the fact that the cost of a motor rebuild varies depending on the engine and the extent of the repair. What is the best way to rebuild an engine? Let’s just say you’ll almost probably need the assistance of a professional mechanic.

The cost of parts and labor for a typical engine rebuild is from $2,500 to $4,000. Simply changing bearings and seals, as well as removing and reinstalling the engine, are examples of this form of engine maintenance.

It might also be much higher. If the crankshaft is broken, the cylinder head cannot be rebuilt, the pistons must be replaced, or the engine block is severely damaged, the engine rebuild cost might rise by thousands of dollars.

An engine rebuild isn’t always necessary, such as if your engine has seized. When your car breaks down, you may need to replace the engine.

How long does an engine rebuild take?

Many drivers are concerned about how long an engine rebuild would take and how much it will cost. Depending on the parts required, rebuilding an engine might take many weeks, if not months. When rebuilding an engine, the assembly balance is rotated, broken parts are replaced, and clearances and cylinder heads are checked. This task necessitates a great level of experience and precision, and it should not be undertaken lightly.

So, to address the question, “Why is Routine Engine Service Important?”

1. Increased Safety – The engine is the most critical component of a car’s operation. It could be the cause of an accident if it fails while on the road. Regular engine maintenance will ensure that it is in good working order, lowering the odds of it breaking down on the highway.

2. Improved performance – It is indisputable that an engine that has been properly serviced will provide the optimum road performance. Lubrication allows the engine to run more smoothly. Furthermore, a properly serviced engine utilizes the least amount of fuel, allowing you to save money at the pump.

3. Increased Engine Lifespan – Engine repair extends the useful life of a vehicle. Any faults are recognized before they become dangerous thanks to the ongoing servicing process. The engine’s life can be extended by replacing damaged parts and fixing it on a regular basis.

Remember that regular engine rebuilding can actually prevent the need for engine rebuilding.

Make any necessary engine repairs so you can drive as safely as possible. For more information on engine servicing or to arrange an appointment, contact our ASE Certified specialists at Elk River Tire & Auto today. Residents of Zimmerman, MN, and Otsego, MN are served by our car shop in Elk River, MN.

How many times can you overhaul a diesel engine?

Many of the faults that can restrict engine performance and limit its lifespan can be resolved with a comprehensive overhaul. Correcting insufficient oil flow to critical engine components, which can lead to worn bearings and the loss of cylinder compression, which restricts engine power, are two examples. Insufficient combustion timing (engine banging is a common symptom) and excessive oil, coolant, or gasoline burning caused by worn or damaged piston rings, fuel injectors, head gaskets, and other engine parts can also be corrected with an overhaul.


Most manufacturers recommend replacing an engine every seven to ten years, or every 800,000 to one million miles, depending on the model. More frequent overhauling may be required if your vehicles operate in difficult road conditions, such as stop-and-go city traffic.

Additionally, executing an overhaul at the earliest sign of decreased performance or higher fuel consumption might lower the risk of a mechanical failure. An overhaul is a more cost-effective alternative to replacing an engine or vehicle, as well as routine simple truck engine maintenance, which will benefit your company’s bottom line.

How long will a rebuilt engine last?

One of the first questions that comes to mind while shopping for a new engine is how long it will last once installed. The answer to this question is contingent on a number of factors, including your driving habits and the rebuild’s quality. This article covers all you need to know about refurbished engines, including how they compare to OEM engines in terms of quality and longevity.

What Is The Life Expectancy Of A Rebuilt Engine? If you perform it correctly, you may not have to worry about the motor in your automobile for a long time. If done correctly, an engine repair can last over 100000 miles! Maintaining the vehicle and completing some of the work on your own will also help you get better mpg.

When looking for a new engine, one of the first things that comes to mind is how long it will last once installed. The answer to this question is contingent on a number of factors, including your driving habits and the rebuild’s quality.

What is the average life of a diesel engine?

For a variety of reasons, a diesel engine may be appealing to you if you’re searching for a tough, dependable vehicle. Diesel engines are engineering marvels that are recognized as some of the most dependable and long-lasting vehicles available. The longevity, endurance, and reliability of diesel engines can be attributed to three factors:

  • A diesel engine’s overall design—gear-driven, better lubrication, and less wear
  • For heavy-duty performance, diesel engines are manufactured with larger and stronger components.

You might be wondering how long a diesel engine lasts. A gasoline-powered car may normally go 200,000 miles before requiring a major maintenance or being replaced with a new vehicle. Maintenance engines, on the other hand, can run for 1,000,000-1,500,000 miles before requiring serious diesel repairs. A diesel engine can last for 30 years or longer if properly maintained.

What are some of the advantages of a diesel engine? There are several factors that contribute to reducing the cost of diesel repairs, including:

  • Diesel, which has the viscosity of light oil, is a far better lubricant than gasoline.
  • Diesel engines produce fewer emissions and corrosive chemicals due to their powerful fuel injection system and increased torque.