8 Best Spark Plugs for 6.0 Chevy [Reviews and Buying Guide]

When you want to ensure a smooth operation of your vehicle, taking care of the particular components is crucial. And spark plugs are one of those vital components for any vehicle. Periodically replacing spark plugs is necessary for hassle-free operation. The same goes for well-known 6.0L Chevy models. Are you here to look for the best spark plugs for 6.0 Chevy? A wide range of Chevy 6.0 are available to make you overwhelmed.

After considering several crucial factors and customers’ honest feedback, our experts have finally picked the 8 best Chevy spark plugs.

We are going to walk you through honest reviews about some best rated spark plugs. Let’s dive in to find them!

best spark plugs for 6.0 Chevy

Best Spark Plugs for 6.0 Chevy

1. NGK 5464 BKR5EIX-11 Iridium IX Spark Plug

NGK (5464) BKR5EIX-11 Iridium Spark Plug

This spark plug is specially engineered for vehicles that have great speed and power. It will improve your car’s performance and power with its thin, 0.6 mm electrode. On the insulator of the spark plug, it features corrugated ribs to prevent intense heat transfer.

Hundreds of reviewers liked its pre-gapped mechanism, meaning it is hassle-free to switch out. It comes in four pieces, so each one costs only around $6. These Japan-made high quality spark plug is not expensive when you consider their quality. It has long-lasting durability and can show stable spark consistently.


  • Trivalent Metal Plating
  • Longer insulator nose
  • Triple gasket seal
  • 6-millimeter laser welded fine Iridium tip


  • High durability
  • Reasonable price
  • Smooth and quiet performance
  • Perfect for high-performance vehicles


  • The gap may need to be adjusted.

2. ACDelco 41-993 Professional Iridium Spark Plug

ACDelco 41-993 Iridium Spark Plug

None of us wants to compromise performance while trying to find the best spark plugs for Chevy Silverado. Whether you are planning for 6.0 vortec spark plug change or another, it can show reliable performance. Since it comes with pre-gapped, installing it on your vehicle is easy.

You will achieve a smooth and stable working engine with this highly durable spark plug. Removing this spark plug from engine head is also easier. Customers appreciated its suppressor seal. In addition, the seal provides a long-lasting electrode. Additionally, the electronics of the vehicle won’t change easily because the suppressor seal stops radio frequencies. All these remarkable features make this iridium spark plug one of the finest ones.


  • Iridium fine-wire electrode
  • Suppressor seal
  • Fully Iridium materials


  • No combustion leakage
  • Excellent stability and smoothness for engine
  • Fuel efficiency
  • Prevention of radio frequencies


  • Pre-gapping may need to be adjusted.

3. DENSO #4511 PLATINUM T T Spark Plugs

DENSO 4511 PLATINUM Spark Plugs

If you are looking for premium denso spark plugs, this model can be a great option to consider. Its extreme durability and reliability make it stand out from typical copper spark plugs. We love its Twin-Tip Technology, ensuring no misfiring issues while keeping the perfect spark plug gap.

While going through the best spark plug review, many customers liked that it doesn’t seem prone to corrosion or erosion easily. Its Platinum-Titanium design extends the life span (up to 60,000 miles) while delivering high-end spark performance. In addition, this new spark plug provides fuel efficiency and improved acceleration for various types of vehicles.


  • Twin Tip Technology
  • Platinum-Titanium design
  • Up to 60,000 miles life cycle
  • Platinum materials


  • No corrosion or erosion easily
  • Budget-friendly
  • Increased power and fewer misfires
  • Long service life


  • Not all spark plugs are pre-gapped.

4. ACDelco GM Original Equipment 41-110 Iridium Spark Plug

ACDelco GM 41-110 Iridium Spark Plug

How about achieving excellent stability and seamless performance for your engine? If it is what you want, then this spark plug is one of the best options. Due to the inclusion of iridium core material, it is compact and ensures a novel electrode design. Thus, it takes less time for cold starting and allows you to accelerate your car with good acceleration.

 Compared to other spark plugs, these ironies can last longer. Each iridium spark plug has an excellent wire center electrode which is mainly engineered for improved electrical energy and boost firing capability.  As a result, it removes all the accumulated carbon from the top part of the plug to ensure fuel efficiency.


  • Compact size
  • Extra spark of power
  • Iridium Core Material
  • One-piece suppressor seal


  • Improves engine response
  • High-quality
  • Goes up to 100k miles
  • Better electrical energy


  • No protector on the gap

5. E3 Spark Plugs E3.54 Automotive Spark Plug

E3 Automotive Spark Plug

Not all spark plugs have innovative designs and outstanding functionality like this model. This model’s Air gap with an unrestricted discharge is mainly used for designing an ideal frameless construction. Even after coming at a reasonable price, it still provides unmatched, powerful performance.

However, Using an anti-seize goo is essential if aluminum is used for the top part of the engine. Otherwise, this may result in severe head damage to your car. Additionally, the unit has a DiamondFIRE design that creates a flame for producing more power and atomizes the mixture better. Also, more surface-area contact is ensured because of swirl and tumble creation.


  • Power efficiency up to 12%
  • Fuel efficiency up to 13%
  • DiamondFire electrode technology
  • Edge-to-edge design


  • Inexpensive option
  • Doesn’t require any gapping
  • Increased power
  • Fuel efficiency improvement


  • Acceleration could be better

6. Bosch 6704 Platinum Spark Plug

Bosch 6704 Platinum Spark Plug

People who are on the lookout for a highly durable spark plug can count on this unit. It features a 360° endless laser welded platinum cover. Running up to 4 years with hassle-free and smooth operation is easy-going for this beast. Also, the improved wiring design of the plug takes safety to the next level.

As per many customers’ feedbacks, the spark plug ignites the fuel efficiently. Since the unit has anti-seize properties, it ensures no corrosion, seizing or galling. Plus, it makes the lubrication task easier. Another thing we love about this plug’s angled ground electrode, which ensures faster heat transfer, improving the combustion system.


  • 360° endless laser welded platinum tip
  • Improved wiring design
  • 4-year satisfaction guarantee
  • Platinum firing pin and yttrium
  • Anti-seize properties for the nickel-plated shell


  • Excellent power for a prolonged time
  • Improved combustion process
  • High durability
  • Great ignition


  • A little bit pricey than others

7. NGK 6240 Spark Plug

NGK 6240 Spark Plug

Leaking is often a common issue for spark plugs. Thankfully, this spark plug ensures no leakage due to its triple seals and trivalent copper core. Efficiently transforming engine is what it is well known for. As the spark plug is made from copper core materials, it ensures great heat dissipation.

Due to the inclusion of several thick coatings, it ensures a long lifespan. As for the performance, it shows reliable and consistent performance while improving your engine efficiency. Make sure you choose the correct spark plug from the authentic website of NGK. Those can last as far as 100k miles and you don’t need to change spark plugs of 6.0 vortec.


  • triple seals
  • Pure alumina silicate
  • Corrugated Ribs
  • Trivalent copper core


  • Nice quality
  • Quick Acceleration
  • Engine warms up faster
  • Improved mileage per gallon


  • Packaging could be better

8. NGK 4548 Standard Spark Plug

NGK 4548 Standard Spark Plug

This spark plug from the NGK is specially engineered to enhance the total performance of your spark plug. The unit is crafted from a pure copper core while ensuring the maximum conductivity to dissipate heat efficiently. Further, the insulator nose is extra-long, which is made of alumina silicate.

Besides, the copper-based spark plug ensures quick spark firing, and it doesn’t prone to overheating issues. The unit has extreme durability because of the Cold-rolled threads, which have improved physical properties. What’s more, it features trivalent plating, making it seize resistant. Other than that, the inclusion of corrugated ribs makes it a great choice and helps to stop flashover.


  • Trivalent plating
  • Cold-rolled threads
  • High-grade alumina silicate
  • 98% pure copper core
  • Original equipment manufacturer


  • Simple to install
  • Reasonable pricing
  • Boost engine efficiency
  • Improved heat dissipation


  • Materials could be better

What to consider for buying the best spark plugs for 6.0 chevy

Choosing a set of spark plugs requires you consider several essential factors. After all, you can’t randomly pick any of those that don’t match your vehicle model.

Buy only when needed

If your spark plugs are functioning correctly, you don’t need to replace them. If you face minor problem, clean the spark plugs to get better performance. Buying standard spark plugs is only necessary when they become flawed or damaged.

So how will you know whether your spark plugs are damaged? They show early signs. For example, they are likely to create abnormal sounds such as knocking or zipper sound for being misfired or gas leakage.

Additionally, you may experience abrupt stops and starts or lacking a coherent connection among the several parts of the car. Also, a foul spark plug may cause slow-moving or reduced acceleration even after pressing the pedal constantly.

Thus, fuel inefficiency will incur. You may have to spend more money than you used to do. In such cases, replacing Chevy 6.0 spark plugs is better.


Picking the perfect size for your spark plugs is one of your essential jobs. Selecting the correct thread size along with the ideal nut size is crucial. For example, if you choose 14 millimeters thread for your lq4 spark plug, you will need 6 millimeters or 20.63 millimeters nut size.

Heat Range

Spark plugs are classified either in “hot” or “cold” categories. If the tip of 6 spark plugs or 2006 Chevy Silverado spark plugs or others is better at conducting heat, they are fall in the “cold” category. If the spark plug efficiently prevents heat transfer, it falls in the “hot” category.

Gap Style

Spark plugs feature a perfect gap. You can adjust the gap by using a spark plug gapping tool for the 6.0 Vortec spark plug gap or others. You can use a single plug more various engines because differently adjusting the gap is possible. Most of the Chevy 6.0 spark plugs have a 0.6 to 1.8 millimeters gap based on the model.


This is the most crucial part. Not all spark plugs will match your 6.0L Chevy model. Checking out the product information is mandatory. Otherwise, you will end up buying the wrong one, and you will not be able to complete the spark plug installation process.

Several things you should know, such as the number of cylinders, engine type, transmission system, etc. Plus, knowing the kind of fuel injection system and engine volume displacement is also essential.

Apart from that, you should have the proper knowledge on how much spark gap exists for your particular engine and spark plug part numbers.


Spark plugs are available in various types such as Copper, Platinum, Iridium, Pulstar, etc. If you prefer a low-cost option, copper is a good choice. Plus, they are compatible with old models.

Car owners who prefer premium quality will love Platinum spark plugs. They are highly durable. Even double-platinum plugs are available if you want extreme durability.

If the price seems no concern for you, Iridium plugs are better. They have a long lifespan. Also, they feature increased firing capability. Firing even at reduced temperature doesn’t appear any issue for them. Experts recommend Iridium plugs over platinum.

So, you can choose any type of spark plug suitable for your car while meeting your budget.


Spark plugs don’t cost as much as other vehicle components. However, some people buy too cheaper spark plugs. They don’t even last for several weeks.

High-quality spark plugs will last for a decent period while functioning smoothly. On the other hand, buying cheap plugs means you go for frequent replacement.

Hence, invest wisely by buying from a reliable brand. They might be expensive than others, but they will have a long service life.


1. How do I change the spark plugs on a 2016 Chevrolet Silverado?

Replacing your current spark plugs on a 2016 Chevrolet Silverado requires you several things to do:

  • Choose the suitable model based on your engine.
  • Prepare spark plug wire in the accurate order.
  • Get the right long socket.
  • Remove the old spark plugs by twisting them clockwise.
  • Setup the perfect gap distance based on your engine model.
  • Install the new ones carefully.
  • Twist the nut in anti-clock direct.
  • Follow the right torque.
  • Connect spark plug wires.

2. What is the spark plug gap for 6.0 Chevy?

The spark plug gap for 6.0 Chevy depends on your Chevy model. The ideal recommended gap for Vortec 6000 (6.0 L) V8 engine is 0.040 inches. On the other hand, for an LY6 Vortec 6000 6.0 L V8 engine, it is around 0.037 – 0.043 inches. Try to change all V8 spark plugs when the gap is more than standard.

3. What spark plugs do give more horsepower?

According to most experts, Iridium spark plugs have more horsepower than other types. They can show up to 3 times more horsepower than Platinum spark plug.

4. Does the spark plug gap affect performance for 6.0 Chevy?

Absolutely. Spark plugs with the wrong gap may result in inefficiency in engine performance. It mainly occurs due to the change of engine combustion, unimproved ignition ability, and not having a smooth and fast spark firing system.

5. Are NGK spark plugs good for Chevy?

Very few spark plug brands are as good as NGK. To fit spark plugs for Chevy engines, The company produces multiple models and types. Hence, taking NGK plugs on the priority list won’t make you down.

Final Thought

The size of spark plugs may appear small, but you can’t overlook their contribution to improving engine efficiency and providing you with a smooth driving experience.

Unless you choose the right and decent quality spark plugs based on your engine model, you won’t have your desired satisfaction while driving the vehicle. Choosing wrong or bad spark plugs may prevent you from implementing the best out of your engine.

So, which one do you think the best spark plugs for 6.0 Chevy? We have included various options to let you select freely based on your preference and the kind of engine model you have. You should make sure the size of the best plugs you order is correct.

Hopefully, you will purchase the perfect one that will be best for your vehicle. Thanks for reading!


Shafiqule Islam is a graduated Mechanical Engineer. He has both on hand and managerial job experience of 15 years in automobile maintenance field. He served as Captain in Electrical and Mechanical Engineering Corp of Army, Technical Head in Taxi Cab business, Head of Plant in Car assembly plant. He is writing automotive contents to share his expertise knowledge to car lovers for solving their vehicle issues.

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