If you have a 5.7 Hemi engine in your car, then you need to use the best spark plugs for optimal performance. A bad spark plug can cause all sorts of problems with your engine, including decreased fuel economy, loss of power, and even engine damage. In this blog post, we will discuss what makes a good spark plug and some of the best options for 5.7 Hemi engines. We will also talk about how to choose the right plugs for your car and what to look out for when shopping for them.
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What Do Spark Plugs Do Exactly?
Inside every car’s engine is a spark plug, which has the important job of igniting the air/fuel mixture so that it can start the combustion process. This mixture is what powers your car, and without a spark plug, your engine would not be able to run.
Spark plugs are made up of a metal electrode that is surrounded by an insulator. The metal electrode conducts the electricity from the ignition system to the air/fuel mixture. The insulator protects the electrode from being damaged by the heat of the combustion chamber.
Over time, spark plugs can become fouled or damaged, which is why they need to be replaced periodically.
Why Good Quality Spark Plugs Are Important
Using quality spark plugs is important for several reasons. First, good spark plugs will help your engine run more efficiently, which can lead to better fuel economy. Second, high-quality spark plugs can help to prevent engine damage by igniting the air/fuel mixture more consistently.
Cheap or fouled spark plugs can cause misfires, which can lead to engine knocking and decreased performance. In extreme cases, engine damage can occur if the problem is not addressed quickly enough.
What To Look Out For When Choosing Spark Plugs For Your Car
Spark plugs are an important part of your engine that need special care and attention. They can be replaced by either copper, iridium or platinum material with different properties depending on what you want them for – affordability versus longevity etcetera but make sure they match up properly first!
The following steps are a guide on how to select the best spark plugs for your car:
1. Choose the right type of plug
There are three main types of spark plugs: copper, iridium, and platinum. Each has its own advantages and disadvantages that you should take into consideration.
2. Select the correct size
Spark plugs come in different sizes, so it is important to choose the right size for your engine. The wrong size can cause damage to your engine.
3. Choose the correct heat range
Spark plugs have different heat ranges, which indicate how hot or cold they should be for optimal performance. If you live in a warm climate, you will need a hotter plug, while a colder climate requires a cooler plug.
4. Consider the brand.
Some brands of spark plugs are better than others. Do some research to find out which brands are the best for your car.
5. Compare prices.
Spark plugs can vary widely in price, so it is important to compare prices before you buy. You should also consider the quality of the plugs when comparing prices.
The 5.7 Hemi has 16 spark plugs in the engine.
Why Does The 5.7 Hemi Use 2 Plugs Per Cylinder?
Two sparks ignite the air-fuel mixture more evenly generating more force for the power stroke
What Are Some Vehicles That Utilize The 5.7 Hemi Engine?
The 5.7 Hemi engine is used in a variety of vehicles, including the Dodge Charger, Dodge Challenger, Jeep Grand Cherokee, and Ram 1500.
If you have one of these vehicles, then you need to make sure that you are using the best spark plugs for this engine
Best Spark Plugs For 5.7 Hemi Engine?
We’ve gone ahead and compiled a list of the best spark plugs you can buy for your 5.7 Hemi
1)NGK LZFR5C-11
It is always best to use OE, or original equipment, replacement parts when possible. This is because OE parts are designed specifically for your vehicle make and model. Aftermarket parts may not fit as well or function as properly as OE parts. In the case of spark plugs, using the wrong type of plug can result in engine damage. NGK LZFR5C-11 spark plugs are the OE replacement for the 5.7 Hemi engine. These plugs are designed specifically for this engine and will therefore provide the best fit and performance.
- Thread size 14 mm x 1.25 mm
- Reach 25 mm
- Heat range 5
- Seat type Gasket
- Materials Copper/nickel
- Gap .043″ (1.1 mm)
2)CHAMPION 446
If you’re looking for a top-quality spark plug that will keep your 5.7 Hemi engine running strong, CHAMPION 446 is an excellent option. These plugs are specifically designed to provide superior performance in Hemi engines, and they’re backed by a long history of excellence from the Champion brand.
- Thread Diameter 14mm
- Thread Pitch 1.25mm
- Seat Type Gasket
- Reach 26.5mm (1.04″)
- Hex Size 5/8″ (16mm)
- Terminal Type Solid
- Gap 039″ (1.0mm)
3)AUTOLITE APP5325
The AUTOLITE APP5325 spark plug is a great choice for the 5.7 Hemi engine. It offers superior performance and durability, making it ideal for high-performance applications. Featuring a copper core electrode and a platinum tip, the AUTOLITE APP5325 delivers reliable ignition and long-lasting service life. It also provides excellent anti-fouling properties, helping to keep your engine running clean and smooth.
- Thread Size 14mm X 1.25
- Reach 3/4″
- Hex Size 5/8″ (16mm)
- Seat Type Gasket
- Gap 044″/1.1mm
- Metal Type Iridium
- Terminal Type Solid
What is The Correct Gap For A 5.7 Hemi Spark Plug?
The recommended gap for 5.7 HEMI is 0.039-0.044 inches or 1.0-1.1 mm
The correct spark plug gap is important because it ensures that the spark plug fires correctly. If the gap is too wide or too narrow, the spark plug might not work properly. This can lead to a loss in power and fuel efficiency, and can even damage your engine.
Some spark plugs come pre-gapped but most do not. You will need to check the gap of your spark plugs and adjust it if necessary.
How Often Should You Replace Your Hemi Spark Plugs?
For optimal performance, it is recommended that you Check your Hemi spark plugs every 30,000 miles. However, if you notice any loss in performance or fuel efficiency, it is a good idea to check your plugs and replace them if necessary.
Replacing your spark plugs is a relatively simple and inexpensive task that can make a big difference in the performance of your engine. If you’re not sure how to replace your spark plugs, consult a professional mechanic.
How To Check The Spark Plugs In Your 5.7 Hemi
The spark plugs in your 5.7 Hemi engine need to be checked regularly to see if they need to be replaced. Here is a guide on how to do this:
1) Remove the spark plug coil for access to the plugs.
2) Use a ratchet and socket to remove the spark plugs.
3) Inspect the plugs for wear or damage. Use a spark plug gap tool to check the gap of the plugs. If the gap is not within the correct range, you will need to adjust it.
4) If the plugs are damaged or worn, replace them with new ones.
5) Reinstall the spark plug coil and other removed parts.
6) Start the engine and check for proper operation.
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