Best Spark Plugs For Honda Civic Reviewed

Caring for your automobile engine requires that you find the best spark plugs for a Honda Civic. We will look at recommended spark plugs for Honda and how to replace spark plugs for Honda Civic.

By choosing the best parts and performing regular maintenance, you can keep your Honda engine running the way it should.

Choosing Quality Spark Plugs For Your Honda Civic

Vehicle Compatibility

The best spark plugs for Honda Civic 2006 will not be the same as spark plugs for a 2013 Honda Civic. You also won’t want to shop for the best spark plugs for a Honda City, as this car wasn’t released in America. Instead, shop based on your vehicle’s year and make. While some plugs might be inter-compatible, you should always browse based on what you drive.

Build Quality

Before picking the best spark plugs for a 2001 Honda Civic, you should look at the construction first. Spark plugs include several aspects, which should be built with premium materials for a longer service life. Check the construction of the center shaft, terminal, insulator, gasket, electrode and housing.

Heat Range & Insulation

Spark plug heat range refers to the insulator nose length. The heat moves from the insulator nose to the spark plug shell, onto the cylinder head before reaching the coolant passages. Hot spark plugs burn oil and carbon deposits efficiently, but the cold spark plug is better for power and compression.

Gap Style & Size

Not only do you want to know how many spark plugs in a Honda Civic, but you must also consider the gap. The best spark plugs for the 2002 Honda Civic might have a different gap than the best spark plugs for the 2013 Honda Civic. Many of the plugs you choose will come pre-gapped; it's best to double-check all measurements with a spark plug gap tool.

Spark Plug Type & Coating

Your Civic can use three types of spark plugs. Standard copper plugs are used in vehicles because of the low cost, but these don’t provide a long service life. For more performance, it’s best to upgrade with platinum or iridium spark plugs that will increase efficiency and power for your Honda.

Thread Size

Measurements of the spark plugs go beyond just the gap. You must also consider the thread size before installing any Civic spark plug. This measurement shows how the plug will fit into the cylinder. With the wrong thread size, you won’t get the fit needed, which could affect performance and engine life.

Change Intervals & Life Expectancy

Keep your tune-up cost to a minimum by choosing the right plugs. Copper plugs require more frequent replacement than platinum and iridium plugs. Choosing a high-quality plug might cost more upfront, but likely costs less per mile, which saves you money and time in the future. 

Price & Warranty

It’s vital to choose the best spark plugs for a 1999 Honda Civic without breaking the bank, but don’t be willing to sacrifice quality. Evaluate the plugs based on life expectancy, read through the customer reviews and look at the warranty to determine which option provides the best value.

1. NGK 6441 ZFR6FIX-11

NGK is a leader in spark plug technology, which is why we chose this as the best spark plugs for the 2005 Honda Civic, among other models. This set of spark plugs is designed for performance, offers extreme levels of ignitability, superior protection from fouling, and improved throttle response. The plugs contain a 0.6-millimeter laser welded fine iridium tip for maximum durability and a stable spark. Plus, there is a tapered ground electrode that minimizes the quenching effect.

With the long insulator nose, fouling isn't an issue, and the corrugated ribs located on the insulator prevent flashover. Plus, NGK uses a triple gasket seal to eliminate any combustion gas leakage. With the high melting point, there is more protection against electrical and heat wear, allowing you to use these plugs for up to 60,000 miles.

It’s difficult to find plugs with reviews as high as these, which is why they should also be labeled as the best spark plugs for Honda Prelude. However, there are a couple of downsides to be aware of. First, you must pay a little extra to get the iridium construction. More importantly, NGK only offers a 60-day warranty, which is far less than most companies.

2. NGK IZFR6K13

Do you want the best spark plugs for a 2004 Honda Accord? You might as well look to the highly-rated NGK brand for your Honda Accord or Fit as well. As with the previous option, you can count on the extreme performance of these plugs. Plus, the plugs offer plenty of ignitability, protection against fouling, and a boost in throttle response. Additionally, the 0.6-millimeter laser welded fine iridium tip creates a stable spark and lots of durability. There is also a tapered ground electrode to minimize any quenching effect.

The long insulator nose on these plugs ensures you don’t deal with fouling. There are also corrugated ribs to stop flashover. With the triple gasket seal used by NGK, there also isn’t any combustion gas leakage. You shouldn’t need to change these plugs but every 60,000 miles.

Take a look at the customer reviews, and you will see the same thing as with others from NGK. Still, you need to remember that iridium plugs are almost always going to cost more than copper. However, you get better service and longer intervals. Plus, NGK only provides a 60-day warranty, but the chances that you will need to use it are unlikely.

3. NGK ZFR5FIX-11

You can choose the same NGK option if you want the best spark plugs for a 2000 Honda Civic or you are looking for the best spark plugs for a 1999 Honda Accord. But, do you know when to change Honda Pilot spark plugs? If you choose these options, you could drive up to 60,000 miles without a replacement. Plus, the construction ensures the best performance possible.

Unlike other companies, NGK provides spark plugs with lots of ignitability, anti-fouling protection, an increase in throttle response, and the 0.6-millimeter laser welded fine iridium tip for a stable spark. With the tapered ground electrode, you also get to take advantage of the anti-quenching effect. You can also count on the long insulator nose and corrugated ribs, which continue to set these plugs apart from other options on the market.

Again, NGK plugs come with exceptional customer reviews, proving why the company can be trusted. Of course, you are going to pay a little more for this type of performance, but your Honda engine is going to thank you. However, NGK only offers a 60-day warranty. While this is much lower than many other companies, you shouldn't need to file a claim.

4. DENSO #4504

It doesn’t have to cost too much to get the best spark plugs for 2008 Honda Civic. With Denso, you can find value-based spark plugs that still offer plenty of service. The Platinum TT plug utilizes a twin-tip design that improves ignitability and increases reliability. The center electrode uses a platinum construction for a long service life. Plus, the ground electrode is made from a titanium-enhanced alloy that reduces erosion.

All of these metals work to fight corrosion as well. Plus, you can count on a superior spark production along with increased performance. There is less obstruction with spark growth, while the gap remains the same. If your vehicle is currently struggling with slow acceleration, misfiring, poor fuel economy, or a lack of overall performance, it might be time to try the set from Denso instead.

Of course, you can’t expect the same level of performance that you would get from the NGK iridium plugs, but you also can’t argue about the price of this set. In fact, just read through some of the customer reviews to see how highly others think about these Honda spark plugs. Another perk is that the company offers a one-year warranty for maximum peace of mind.

5. NGK 6619

To find the best spark plugs for 2012 Honda Civic, it only makes sense for us to revisit the NGK brand. The difference with these plugs compared to some of the others from this brand is the price. You will notice that this set is quite the value, especially when you consider the longer service life and iridium construction. Go up to 60,000 miles before you need to do a replacement.

NGK plugs offer superior ignitability, a boost to throttle response, a 0.6 millimeter laser welded fine iridium tip to create a stable spark, and plenty of anti-fouling protection. There is also a tapered ground electrode to create an anti-quenching effect. To further set the construction apart, you will notice the corrugated ribs and long insulator nose. These are aspects that aren't included with cheap spark plugs.

You can’t beat the reviews found with NGK plugs, which is why the brand is dominating our list of options. Your Honda engine gets the best care with iridium plugs. However, the company only provides a 60-day warranty to customers. On the bright side, most customers never face a need to file a warranty claim, as these plugs tend to work as intended.

6. Denso (5304) IK20

As a final option for your Honda spark plugs, you might consider these from Denso. With the iridium construction, you would figure that the price would skyrocket, but they are actually quite reasonable. These plugs contain a 0.4 mm iridium center electrode, which is the smallest diameter available to maximize the firing potential.

There is also a U-groove and tapered cut ground electrode to offer faster growth with the spark flame and less heat quenching. Denso also uses a patented 360-degree laser welding process for a higher quality bond and better structural strength. If your Honda engine is struggling to perform or you are noticing a decrease in fuel economy and dealing with misfires, it might be time to replace the old, worn-out plugs with Denso.

Travel up to 60,000 miles with these iridium plugs in your Honda engine. You will notice the same level of exceptional reviews that you would expect from a high-quality plug. However, they might not be as well-loved as the NGK plugs. With that in mind, Denso does provide a one-year warranty, where NGK only offers 60 days of protection. For some customers, this peace of mind is more important and becomes the selling point.

Quick Overview of Honda Engines

Honda produces a variety of engines for vehicles, lawnmowers, and other small machinery. Many Honda engines are interchangeable between models, such as the Civic and Accord. With these engines, you will find four spark plugs in four-cylinder motors, and six spark plugs with the six-cylinder model. So, what size socket for spark plugs on Honda vehicles is required? It depends on what model you drive. 5/8” seems to be industry standard.

When to Change Honda Civic Spark Plugs

Do you know how often to change spark plugs in a Honda Civic? With copper plugs, you might need a tune-up every 30,000 miles, while other varieties could last up to 100,000 miles. Follow all of the recommendations by Honda, but also watch for signs of fouled plugs. You might require replacements when the Check Engine Light comes on or if the engine starts to misfire and idle rough.

Changing, Checking & Cleaning Honda Civic Spark Plugs

It’s not difficult to change spark plugs with your Honda vehicle. Whether you want to learn how to change spark plugs 2007 Honda Civic, or you are searching for how to change spark plugs Honda Fit 2011, you can follow these tips.

Here is a video showing how to change spark plugs on a Honda Civic 2012.

People Also Ask (FAQs)

What spark plugs does Honda use?

The majority of spark plugs used in Honda vehicles are made from NGK. The company has more than 80 years of experience and focuses on creating parts for high-performance vehicles.

What’s the average cost of spark plugs for a Honda Civic?

You can find copper Civic spark plugs for less than $5 a plug. If you spend a little more, you can get platinum or iridium plugs for your Civic, which will improve the performance.

Will upgrading spark plugs improve my Honda Civic’s horsepower and gas mileage?

Changing the spark plugs doesn’t add any performance unless you upgrade the style or replace a worn-out plug. In these cases, you can expect to receive more efficiency and better performance after the spark plug replacement.

What do the numbers on the spark plug mean?

Every company uses a different spark plug numbering system. For example, NGK has a numbering system that includes the materials, heat range, gap, and more.

Where is the best place to buy replacement spark plugs for Honda engines?

We recommend shopping on Amazon for all of your Honda Civic parts. It’s the ideal place to find spark plugs, the best spark plug wires for a Honda Civic and other aftermarket components.

Conclusion

What are the best spark plugs for a Honda Civic? The NGK 6441 ZFR6FIX-11 provides a durable iridium construction that is going to provide the best performance and longest life.