5.9 Cummins Tappet Cover Replacement Without Removing Injection Pump

The 5.9 Cummins tappet cover replacement without removing the injection pump can be completed by first draining out all the engine oil from the sump and then detaching any external components, such as the air intake hose or fan belt if applicable. Next, disconnect all of the wiring harnesses in and around the area of where you’ll be replacing your tappet cover. Remove all bolts that attach to it and carefully lift off your old tappet cover away from its mountings.

Once removed, place a new gasket onto both sides of your new tappet cover before bolting it back into position with a torque wrench set according to manufacturer specifications. Finally, reinstall all wires and hoses while making sure they are properly connected so that no additional damage is done during assembly process.

Replacing the tappet cover on a 5.9 Cummins engine without removing the injection pump is no easy task, but it can be done with a few simple steps. You’ll need to remove some components and then unbolt the valve cover from its mountings before you can access the internal parts of your engine. Once you’ve done this, you’ll want to make sure all gaskets are in place and that everything is sealed properly so that oil won’t leak out when you put the new tappet cover on.

Then simply bolt it back into place and voila! Your 5.9 Cummins will have a brand-new tappet cover without having to worry about taking off any other major parts.

Side engine cover / tappet cover on Cummings motor with out removing injection Pump

What Does a Tappet Cover Do?

A tappet cover is an important part of the car engine, which helps protect the valves and other components from dust, dirt, and debris. It also prevents oil leakage from the valve rocker arms when they are in use. The tappet cover also keeps oil away from high temperature areas such as exhaust manifolds and spark plugs to keep them functioning properly.

In addition, it can help reduce noise levels coming from the engine by dampening vibrations caused by valve movement. Lastly, a tappet cover provides structural support for your cylinder head and helps prevent warping or cracking of its surface due to excessive heat generated during operation. All these functions make a tappet cover an essential piece of your vehicle’s engine that should be inspected regularly for wear or damage to ensure proper performance over time.

What Part Number is a Cummins Tappet Cover?

The Cummins tappet cover is a vital part of the engine, and its part number is 3918753. It’s an important component that helps to protect the valves from dust, dirt and other debris. It also helps to keep oil inside the engine so it can lubricate the moving parts properly.

The tappet cover should be inspected regularly for signs of wear or damage, and replaced if necessary. This will help ensure your engine runs smoothly and efficiently at all times. If you’re unsure what size or type of tappet cover you need for your vehicle, check with your local auto mechanic or Cummins dealer who can tell you which one is right for you.

Should You Oil a Valve Cover Gasket?

When it comes to the maintenance of your vehicle, a valve cover gasket should never be overlooked. This part helps keep oil in your engine and prevents debris from entering into vital parts. In many cases, it is recommended that you oil your valve cover gasket for optimal performance.

Oiling this part can help reduce wear and tear as well as prevent leaks from occurring. When oiling the gasket, make sure to use an appropriate lubricant such as motor oil or silicone grease to ensure maximum protection against dust and dirt. Additionally, if possible, try to inspect the gasket every few months or so for any signs of damage or wear-and-tear which could cause major issues with your engine in the long run.

Taking these simple steps can help prolong the life of both your car’s interior components and its exterior parts alike – making sure that you get more out of every mile!

What is a Tappet Cover Gasket?

A tappet cover gasket is a part of an internal combustion engine, and it serves to seal the area where the cylinder head meets the valve mechanism. This connection is vital for maintaining system integrity, as it prevents oil leakage out of this important area. The tappet cover gasket also helps to keep dust and dirt from entering into the system, thus preventing damage to internal components.

It’s usually made from rubber or other flexible material that can easily conform to shape when pressed against two surfaces. In most modern engines, these gaskets are designed with multiple layers so they provide optimal sealing power in all conditions – no matter how hot or cold it might be outside. With proper maintenance, a good quality tappet cover gasket can last for many years without needing replacement – helping owners save money on costly repairs down the line!

5.9 Cummins Tappet Cover Replacement Without Removing Injection Pump

Credit: mopar1973man.com

5.9 Cummins Tappet Cover Gasket Replacement Cost

Replacing the tappet cover gasket on your 5.9 Cummins diesel engine can be a cost-effective repair that will help keep your engine running smoothly and efficiently. The cost of this repair typically ranges from $100 to $200, depending on the shop you choose. Additionally, it is important to purchase quality parts for this particular job since low-quality gaskets may cause additional problems with your engine in the future.

Cummins Tappet Cover Replacement Cost

Replacing the tappet cover on a Cummins engine can be a costly repair, with parts and labor running anywhere from $400 to $1,000 depending on your vehicle model and local labor rates. If you’re looking for an affordable option for replacing your tappet cover, it’s important to shop around for the best prices and find a reputable mechanic who specializes in Cummins engines.

5.9 Cummins Tappet Cover Leak

One of the most common issues with a 5.9 Cummins engine is a tappet cover leak. This issue occurs when the rubber seal on the edge of the tappet cover becomes worn, allowing oil to seep out and cause damage to other components in the engine. To fix this problem, you’ll need to replace the old seal with a new one and make sure it’s properly seated so that no more oil leaks occur.


In conclusion, replacing the tappet cover on a 5.9 Cummins engine without removing the injection pump can be done with relative ease and confidence if you have some basic automotive knowledge and skills. This is a great way to save time and money when making this repair as it eliminates the need for extra parts or labor costs associated with taking out the pump. Ultimately, replacing your own tappet cover can give you peace of mind that everything was done correctly while also providing better performance in the long run due to improved sealing around the injector lines.


  • Zayn

    John Zayn Smith is a renowned truck enthusiast, automotive industry expert, and author. Beginning his career as a mechanic, Zayn's curiosity led him to explore all facets of the trucking world, sharing his insights through in-depth articles on TruckGuider.com. His knowledge spans truck mechanics, trends, and aftermarket modifications, making him a trusted resource for both professionals and hobbyists. Outside writing and mechanics, Zayn enjoys off-roading, truck shows, and family time. Follow his work for the latest in truck-related news and tips.

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