How to Install Engine Block Heater

Are you looking to get your car ready for the winter months? Installing an engine block heater is one of the greatest investments you can make in your vehicle because it helps keep the engine running properly even in cold temperatures.

How to Install Engine Block Heater

Not only does this help provide a reliable start-up on those chilly mornings, but it also protects your engine from wear and tear that would otherwise be caused by extreme weather conditions.

In this blog post, we will explain everything to know about how to install engine block heater so that you can have peace of mind knowing that your car will stay safe no matter how low the mercury drops outside.

Should I Install an Engine Block Heater?

An engine block heater is a device that warms up the oil and coolant in your car’s engine before you start it. This can help reduce wear on your engine and also improve fuel efficiency since a warm engine runs more efficiently than a cold one. It can also make starting a cold car easier in winter climates where temperatures drop below freezing.

If you live in an area with very extreme winter weather conditions, then installing an engine block heater is probably a good idea. Not only will it help extend the life of your vehicle’s engine, but it will also make starting your car much easier during those chilly mornings. However, if you rarely drive or don’t often experience bitterly cold temperatures, then there really isn’t much benefit to installing an engine block heater.

In the end, it really depends on your particular climate and driving habits. If you feel that you need an engine block heater, then consulting a professional mechanic or even researching online can help you determine if one would be beneficial for your vehicle and what type is best suited for your needs.  In any case, following the instructions provided with the device will ensure proper installation and safety of your car’s engine.

Proper Installation and Safety of Your Car's Engine

9 Methods on How to Install Engine Block Heater

1.  Read the Instruction Manual

Before you begin the installation, it is important to read the instruction manual that came with your engine block heater. This will provide you with all of the necessary information and safety precautions to follow throughout the entire process.

However, for convenience, a few key steps are outlined below. Although you can read the manual on your computer, it is best to print out a hard copy in order to have easy access during installation. While reading, make sure to pay close attention to any warning labels or cautionary statements that the manufacturer may have included.

2.  Park in a Well-Lit Area

It is best to park your car in a well-lit area so that you can see what you are doing. This will also help to deter potential thieves. Make sure that you park somewhere that has both overhead and ground lights so that you can easily see the engine block.

If you are working late at night and there is not adequate lighting, consider carrying a portable light with you. Although this might sound like a minor detail, it is important to ensure that you have enough light to work safely on your car. Try to pick a spot that is away from any foot traffic or other vehicles.

3.  Locate the Engine Block

The first step is to locate the engine block. This is typically located at the front of the engine, near the radiator. Once you have found the engine block, clean off any dirt or debris that may be on it. If the engine block is covered with a lot of dirt or debris, it may be difficult to accurately install the heater.

First Step is to Locate the Engine Block

However, if the block is clean, it should be easier to properly place the heater. While cleaning the engine block, take a look to ensure that there are no cracks or holes in it. If you find any, contact a professional before continuing with the installation.

4.  Drill a Hole in the Heater Cord

Next, you will need to drill a hole in the engine block for the heater cord. The size of the hole will depend on the size of the cord. Be sure to drill the hole in a location that will not interfere with any moving parts or other components of the engine.

Once the hole is drilled, thread the cord through it and into the engine compartment. While you are doing this, use caution to make sure the cord does not become snagged on anything. Though you may want to wear protective gloves while doing this, it is not necessary.

5.  Install the Heater Element

After drilling the hole, thread the heater element through it and into the engine block. Be sure to follow the instructions in your manual for proper installation. Use an appropriate lubricant on the threads of the heater element to ensure it goes in properly. Make sure that the element is tight against the engine block and that the electrical connection is secure.

If the heater has an adjustable thermostat, adjust it to your desired setting. To complete the installation, reconnect the negative cable to the battery and reinstall any removed parts. Finally, test that the heater is working properly by turning it on and feeling for the warmth of the block.

6.  Connect the Heater Cord to an Electrical Outlet

Once the heater element is installed, connect one end of the heater cord to an electrical outlet. The other end of the cord should be left dangling inside of your engine compartment. It is important to ensure that the cord is secured away from all moving parts and any other potential sources of heat.

Cord is Secured Away From All Moving Parts

This will minimize the risk of damage to the cord and any potential fire hazards. Finally, plug in the cord and turn it on so that it can begin heating up your engine block. With your engine block heater now in place, you can rest assured that your car will be ready to start up quickly, even in cold weather.

7.  Wrap Exposed Metal Parts with Electrical Tape

If there are any exposed metal parts on your heater cord, it is important to wrap them with electrical tape. This will help to prevent any shorts or sparks that could occur when exposed metal comes into contact with other metal surfaces. Make sure to wrap the tape around all metal parts that are exposed.

If the metal parts are too close together, you can use additional tape to separate them. Once all of the exposed metal parts are wrapped in electrical tape, your engine block heater is ready to be used. To help keep it in place, you can also wrap some tape around the cord to fasten it to the engine block. This will help ensure that it will stay in place and won’t become loose or disconnected during use.

8.  Route Cord Away from Moving Parts

When routing your heater cord, be sure to avoid any moving parts inside your engine compartment. This includes fan belts, pulleys, and other moving components. Failure to do so could result in damage to your cord or other components.

Use zip ties to attach the cord securely out of the way. Be sure to leave enough slack so that components do not get pulled or stressed by the tension of the cord. To check for a secure connection, gently tug on the cord several times to make sure it is not going anywhere.

9.  Secure the Cord in Place with Zip Ties or Clamps

Once you have routed your cord away from all moving parts, secure it in place using zip ties or clamps. This ensures that the cord will not move around while your engine block heater is in use, which can cause damage to the cord and other parts of your engine.

Using Zip Ties or Clamps

Once you have securely attached the cord, double-check that all connections to the block heater and power outlet are tight and secure. Lastly, make sure to plug in the engine block heater before starting up your vehicle. Enjoy a faster warm-up time with your newly installed engine block heater!

Things to Consider When Installing Engine Block Heater:

1. Location:

It is important to choose the right location for installing the engine block heater. If installed in the wrong spot, it may cause the engine to overheat or run inefficiently. The ideal location for installing the engine block heater is on the side of the engine block near a coolant hose.

2. Power Source:

The power source should be able to provide enough current to heat up the entire engine block. If it is not correctly wired, it might cause damage to the engine. It is recommended to consult a professional for the wiring and installation of the engine block heater.

3. Safety:

When installing an engine block heater, it is important to make sure that all safety measures are taken into consideration. The cord should be secured in place, and all exposed wires must be insulated properly. It is also important to use a reliable surge protector.

4. Maintenance:

Engine block heaters require regular maintenance and inspections to ensure that they continue to operate safely and efficiently. Regularly check for signs of corrosion or damage, such as frayed cords or cracked insulation, and replace the cord if necessary. Additionally, it is important to check the coolant level of the engine to ensure it is at the proper levels.

Engine Block Heaters Require Regular Maintenance

Following these tips will help ensure that your engine block heater is working safely and efficiently. 

Installing an engine block heater can be a great way to warm up your car faster during cold weather conditions, but it is important to take into consideration all safety precautions and maintenance needs. 

With the right installation and care, your engine block heater will be able to keep your engine warm for many years to come.

Can I Install a Block Heater Myself?

Yes, you can install a block heater yourself. Be sure to follow the installation instructions that come with your specific model of the block heater.

First, locate and identify the engine cooling system drain plug at the bottom of your radiator or engine block. Loosen and remove the plug so that any built-up coolant can drain out into an appropriate container.

Then use a socket wrench to remove the old thermostat housing from its mounting on the side of the engine. Install the new mount for your block heater in its place and secure it with bolts provided by your kit.

Next, attach electrical wiring to connect your block heater to the power source in your vehicle. Route the cord either up through openings in other components or through the firewall into the engine compartment.

Do Block Heaters Use a Lot of Electricity?

No, block heaters are designed to use very little electricity and will not cause a huge spike in your energy bill. Most engine block heaters consume only 400-800 watts of power, which is about the same amount as an average light bulb. This means you can run the heater for 8 to 16 hours overnight without making much of an impact on your electricity bill.

However, it is always best to check the wattage rating of your particular heater and calculate your projected energy costs before purchasing or installing it. Ultimately, block heaters are a great way to ensure that your engine will be ready to go when you need it!

Your Engine Will Be Ready to Go When You Need It


When it comes to installing an engine block heater, the most important thing to do is to follow all safety precautions and never leave the heater plugged in overnight. It should also be professionally installed by a qualified technician who will ensure that the correct wattage is used and that the parts are properly fitted.

By following these steps on how to install engine block heater, you can make sure that your engine block heater works correctly and helps you save money on fuel costs in colder months.

Louis Wein

Louis Wein

Louis has always been fascinated by cars. He loves the way they look, the sound of the engine, and how they make him feel when he's driving. He is always keen to learn more about different mechanics of cars and how the engine contributes to other aspects of the car. As an automotive technician with over 10 years of experience, he knew how they worked and loved taking them apart to see how they went back together. He was especially interested in the mechanics of combustion engines and loved finding ways to make them more efficient. He loves to work on cars and help people keep their vehicles running smoothly. As a senior editor, he enjoys contributing to Diy quickly because it allows him to share his knowledge and expertise with others.

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