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Jeep 4.0 Cylinder Head Replacement Cost: Full Details

The engine valves are housed in the cylinder head, which is mounted on top of the engine block. The valves open and shut as the automobile drives, bringing air in while also releasing exhaust gases.

In overhead camshaft engines, the camshafts are housed in the cylinder heads, but not in overhead valve engines. Oiling and cooling tubes are also found in the cylinder head. Inline engines have one cylinder head, while V-configured engines have two.

If one of the four cylinders of a four-cylinder engine fails, the jeep loses one-fourth of its power. You risk destroying the engine if you do not have cylinder engine repair.

A cylinder head replacement might cost anywhere from $1200 to $3000, depending on the extent of the damage and other work necessary.

Jeep 4.0 Cylinder Head Replacement Cost (Updated Price)

Before selecting to replace your current 4.0 cylinder head, you must first determine your budget. We’ll go through everything with you straight immediately to ensure you’re on the same page.

The majority of the time, the price range is $1,200 to $3,000. The pricing may vary due to several factors to consider before replacing your current cylinder head. Another thing to think about is your Jeep 4.0’s model.

The Cylinder Head’s pricing is also influenced by the 4.0 model. So, if you have a budget of around $2,200, you’ll have a lot of choices.

For your convenience, here are a few cylinder head options to consider as a replacement for your current Jeep 4.0 cylinder head.

Product NamePriceWeightWarranty
Enginetech Engine Cylinder Head CH1013R$546  38.5 lbs.1 Year
American Cylinder Head Engine Cylinder Head AC294C$7089 lbs.2 Years 
Titan Engine Cylinder Head TENG107N$156280 lbs.3 Months
NuTech Engine Cylinder Head 2DM2L$56645 lbs.1 Year 
TechHead Engine Cylinder Head ALL-20294$29454 lbs.1 Year 

When Should You Replace Your Jeep 4.0 Cylinder Head?

Your vehicle’s power will be reduced if an engine cylinder breaks. The number of cylinders inside the engine determines the engine’s size. A misfired cylinder occurs when a cylinder fails, implying that the engine is firing any power from that one cylinder.

Other key indications might help you determine whether your Jeep 4.0’s cylinder head needs to be properly inspected, repaired, or replaced.

So, let’s discover more about those signs and symptoms–

1. Low Engine Performance

A significant drop in engine power is the most typical indication you may notice. The engine will become more sluggish and jerky.

When you observe a considerable lack of power, this is another typical symptom that immediately signals a broken head.

The engine will continually lose power, especially while accelerating, going up a slope, or towing.

2. Oil Leakage

There is oil in the cylinder head. As a result, if the head cracks, the oil will flow. The oil light on your dashboard will illuminate, indicating that your oil pressure is low.

Check for engine oil at the cylinder head by opening the hood. If you don’t locate any oil, the leak might be due to anything else.

3. Coolant Leaking

Coolant, in addition to oil, can leak from a badly fractured head. The engine will overheat as a result. Internal leakage, on the other hand, can create coolant leaks.

If you observe a coolant leak or a substantial decline in the coolant level, check your coolant level and immediately stop driving.

4. Engine Head Smoke

If the crack is serious enough, the engine may emit white smoke. It can be caused by either a coolant or oil leak.

When the leaking oil or coolant comes into touch with the combustion chamber of the engine, smoke is produced.

5. Engine Misfire

For full combustion, an engine needs three things: a good spark, the right air/fuel ratio, and enough compression.

As we’ve seen, if the cylinder head is severely damaged, the combustion chamber will be filled with a combination of oil and gases. This combination will not burn correctly, resulting in a loss of compression and misfiring of the engine.

These are the most prevalent symptoms associated with a Jeep 4.0’s the broken cylinder head.

Jeep 4.0 Cylinder Head Installation Guide:

A few tools and equipment are required to replace the cylinder head. These are:

  • Head gasket set.
  • Engine oil.
  • Oil filter.
  • Thermostat.
  • Exhaust manifold gasket set.
  • Spark plugs.
  • Valve cover gasket.
  • Timing belt kit.
  • Oil & coolant drain pan.
  • Gloves.
  • Safety glasses.
  • Torque wrenches.

This is a step-by-step instruction on how to replace your Jeep 4.0’s cylinder head:

Step 1- Detach the grass screen shield and grass screen as well as the grass screen. Disconnect the four bolts that hold the engine cover in place, then the cover itself.

Step 2- Disconnect the engine shroud from the engine side you’re working on. Remove the two bolts that secure the fuel pump bracket to the cylinder head, and then the vacuum line that connects the fuel pump to the cylinder head. Only a spring clasp secures it to the head.

Step 3- After removing the bolts and clamp, you may move the pump out of the way. Remove the cylinder head’s breather hose and bolt.

Step 4- Detach the four nuts that hold the exhaust to the left and right cylinder heads, as well as the two intake bolts from the cylinder head. The muffler may then be removed.

Step 5- Remove the two bolts that hold the valve cover in place, then gently remove the cover while avoiding damaging the gasket. It’s not a huge concern if the gasket tears; it simply signifies it has to be replaced.

Step 6- After removing the valve cover; detach the five bolts that hold the cylinder head in place. Because various engines have varying length bolts, it’s important to keep track of where each one originated from. The head may now be removed after the bolts have been removed.

Step 7- You may need to move all valve train components to the replacement cylinder head, depending on your engine’s make and model. Consult your manufacturer’s service manual for precise instructions if you need to replace valve train components.

Step 8- After disassembling the head gasket; use a gasket scraper to remove any remaining gasket material. When utilizing an air-powered gasket removal tool, avoid using an overly abrasive disc. After cleaning everything, it’s time to put the new head and gasket in place.

Step 9- Replace the head and gasket. Tighten the bolts by hand to keep the head and gasket in place. Consult your manufacturer’s service manual for the optimum torque and sequence.

Step 10- You may now insert the pushrods and tweak the valves after torquing the cylinder head to the desired torque. Consult your manufacturer’s service manual for the required clearances.

Step 11- After you’ve finished adjusting the valves; reinstall everything you took apart in the reverse order.

Step 12- When you’re done, check sure your equipment works by testing it. Keep in mind that these are merely suggestions. Consult your owner’s handbook for detailed requirements.

Can You Drive With A Dead Cylinder?

Yes, you can do it with one broken cylinder, but it isn’t recommended. Driving with a misfired cylinder in the engine is possibly risky. If one cylinder isn’t firing, you’ll already be short on power, and if another cylinder fails, you’ll lose even more power.

For example, in a four-cylinder Jeep, if one cylinder is consuming half the power, two-cylinder misfiring will consume half the power. With only two cylinders running, a four-cylinder automobile is unlikely to drive very far for very long.

What Is the Life Expectancy of a Jeep 4.0 Cylinder Head?

Cylinder heads generally last 200,000 miles, which is around the same as most jeeps’ lives.

That means you should never have to deal with a blown cylinder head if you take care of your Jeep and follow the service schedule.


Cylinder heads are an essential component of your vehicle’s engine. They house the fuel burners as well as the airflow control valves. However, severe pressure might cause them to break.

To see if your cylinder head is broken, look at the five most typical symptoms. Keeping a close watch on these signs will help you avoid permanent injury.

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