The Best Spark Plugs on The Market: What You Need to Know

Spark plugs are critical for your vehicle’s internal combustion process. They provide the spark that’s needed to ignite the air and fuel mix to start the combustion that resultantly starts and moves your vehicle.

 

Spark plugs can also make a world of a difference in the smooth vehicle operation and your driving experience. That’s why choosing the right spark plug for your vehicle is critical.

 

However, the market is filled with all types of products and it can be very challenging to choose the best spark plugs. That’s why we have come up with this guide that contains the best spark plugs that you can buy for your vehicle.

 

Best Spark Plugs to Buy

1. NGK 6619 Iridium Spark Plugs: Best Overall – Check Price
2. Bosch 4417 Platinum Spark Plugs: Runner UP – Check Price
3. ACDelco Professional 41-993 Iridium Spark Plugs: Best for Cold Starters – Check Price
4. E3.36 Powersports by E3 Spark Plugs: Best for Professionals – Check Price
5. Motorcraft SP-534/SP-580 Spark Plugs: Best for Ford Vehicles – Check Price
6. Autolite Platinum AP104-4PK Spark Plugs: Best for Enhanced Fuel Economy – Check Price
7. ACDelco 41-114 GM Original Equipment Spark Plugs: Backed by GM – Check Price
8. Denso Iridium 4719 TT Spark Plugs: Best Value for Money – Check Price
9. NGK 7634 Black Spark Plugs: Best for Older Vehicles – Check Price
10. Champion 71 Copper Plus Spark Plugs: Best Copper – Check Price

 

Best Spark Plugs: Reviews

 

1. NGK 6619 Iridium Spark Plugs: Best Overall

 

Iridium is by far the best material to use in the manufacturing of spark plugs and if you want a spark plug that checks all the boxes, you can’t go wrong with the NGK 6619 Iridium spark plug. It’s specially designed to offer a long lifespan and enhanced performance.

 

It’s better than all the spark plugs made with other materials including platinum, silver, and copper. You can also buy a set of these spark plugs that comes in handy if you need to replace multiple plugs. As compared to most platinum plugs, this product offers a 25 percent longer life.

 

While it’s more expensive than platinum and copper spark plugs, it is still affordable as compared to other components of your vehicle. Better yet, the NGK 6619 Iridium Spark Plugs are worth the price considering their performance and extended lifespan.

 

This spark plug is compatible with a range of different cars including Lexus ES, Subaru WRX, and BMW 3 Series. On the downside, you might need to adjust its gapping.

Pros

• Iridium based spark plugs
• Last longer than any other type of spark plugs
• Offer increased efficiency with the superfine electrode wire
• Can easily run for 100,000 miles

Cons

• Some customers experienced inconsistent gapping

 

2. Bosch 4417 Platinum Spark Plugs: Runner UP

 

Bosch is one of the most popular brands that offer thousands of different types of spark plugs. The Bosch 4417 Platinum spark plug is one of the best products that the company has to offer.

 

These spark plugs are made with incredible electrode components and four yttrium ground electrodes and the center electrode is made of platinum. The four yttrium ground electrodes not only extend the lifespan of the plug but also minimize oxidation to offer improved performance.

 

The corrugated insulator nose of this spark plug reduces flashovers and upgrades the throttle. Probably the best feature of this spark plug is that it comes with a factory-set gapping. It means you won’t need to go through the hassle of measuring and adjusting the spark plug gap.

 

The Bosch 4417 Platinum spark plug enhances the engine’s idle and lowers fuel consumption. You will need to change these spark plugs after 100,000 to 150,000 miles which are pretty impressive for a platinum-based spark plug.

 

Pros

• Feature four yttrium-enhanced electrodes
• Enhance engine performance
• Come with premium quality materials
• Prevent engine fouling

Cons

• Small central electrode
• Thin terminals

 

3. ACDelco Professional 41-993 Iridium Spark Plugs: Best for Cold Starters

 

If you’re looking for the best iridium spark plug, the ACDelco Professional 41-993 Iridium spark plug can be your best choice. These spark plugs are equipped with the latest technology that is available in the market. Stable idle, great lifespan, maximum efficiency, and smooth performance are some of the most notable features of this product.

 

These spark plugs also exceed the factory specs that are specified for quality and durability. It comes with a smaller yet more efficient electrode because of iridium and it also helps to start a cold engine easily.

 

The ACDelco Professional 41-993 Iridium spark plugs can keep your engine running efficiently for a longer period of time because they need less voltage to ignite the fuel and air mixture.

 

Another great feature of these spark plugs is that they come with an inbuilt suppressor. It means these spark plugs can block radio frequency interference to keep the electronics of your vehicle safe. They are also pre-gapped by the manufacturer which makes them easy to install.

 

Pros

• Best choice for cold starters
• Come with a built-in suppressor
• Minimize strain on the components
• Equipped with the latest technology
• Offer efficient and smooth performance
• Excellent idle stability

Cons

• Can get damaged easily

 

4. E3.36 Powersports by E3 Spark Plugs: Best for Professionals

 

E3.36 Powersports by E3 spark plugs come with patented technology and can be used with both two or four-stroke engines. These features set this product apart from the competition. It nosedives the emission of your vehicle after 50 hours of installation. The company says that the spark plugs need some time to come to speed that’s why this time frame is there.

 

Another great feature of this spark plug is that it can easily manage intense temperature and pressure conditions because it is specially designed for colder heat ranges. That’s why it’s the best product for those drivers who like to test the limits of their vehicle’s engine regularly.

 

You can install this spark plug in your engine if you have a high-performance car to enjoy the best driving experience. The E3.36 Powersports by “E3 Spark Plug” is also equipped with the iridium-enhanced alloy that not only complements the cold heat range but also minimizes the temperature of the side wire by up to eight percent.

 

The number doesn’t seem big but in reality, it lowers the risks of pre-ignition and increases the shelf life of the product significantly. On the downside, it’s not suitable for standard vehicles.

 

Pros

• Come with a patented technology
• Ensure faster burn
• Improve fuel efficiency
• Offer improved power
• Eco-friendly product

Cons

• Not suitable for standard vehicles
• Requires the right tools to work optimally

 

5. Motorcraft SP-534/SP-580 Spark Plugs: Best for Ford Vehicles

 

The Motorcraft SP-534/SP-580 spark plugs are specially designed for Ford vehicles in order to meet factory specifications and requirements. These plugs flaunt high-quality materials to ensure years of worry-free and efficient operation and installing them is also pretty straightforward.

 

It’s best to use the replacement spark plugs that are specified by your manufacturer. If you own a Ford vehicle, chances are you’ll need to use these top-of-the-line spark plugs.

 

Another great feature of Motorcraft SP-534/SP-580 spark plugs is that they are shipped in application-specific kits. They can fix a lot of problems that your vehicle currently has including poor fuel mileage, poor performance, misfires, and decreased acceleration.

 

Pros

• Worry-free and straightforward installation process
• Guaranteed to fit
• No need to adjust the gap
• Come with premium-quality materials
• Long service life
• Fix common problems linked to faulty spark plugs

Cons

• You’ll need lisle remover to remove the plug

 

6. Autolite Platinum AP104-4PK Spark Plugs: Best for Enhanced Fuel Economy

 

These double platinum spark plugs will suit you the best if you’re tired of visiting gas stations more frequently than ever before. These spark plugs are best known for their remarkable fuel economy, long lifespan, and enhanced engine performance.

 

These spark plugs come with platinum tips that prevent misfires and eliminate gap erosion completely. Better yet, the Autolite Platinum AP104-4PK spark plugs also feature quick starts and ensure smooth acceleration.

 

The necked-down center electrode can work in extreme conditions efficiently and fires clean and quickly. The platinum firing tip of the center wire ensures superior performance as well as durability and reliability.

 

The side electrodes of these spark plugs are coated with premium-quality nickel alloy that maintains precise gapping for a longer period of time. The core electrode is made of copper that offers outstanding performance regardless of the current conditions of the combustion chamber.

 

The platinum side wire technology is used to make sure that the spark plugs deliver a more focused ignition. All these features and state-of-the-art technology make Autolite Platinum AP104-4PK spark plugs perfect for engines with a distributor less ignition system.

 

Pros

• Come with a whopping seven years guarantee
• Equipped with advanced technology
• Durable and reliable
• Offer optimized engine performance
• Ensure quicker acceleration and easier starts

Cons

• The spark plug gap isn’t always precise

 

7. ACDelco 41-114 GM Original Equipment Spark Plugs: Backed by GM

 

Probably the best thing about ACDelco 41-114 GM Original Equipment spark plugs is that they are backed by the GM (General Motors). It offers exceptionally smooth performance and great engine idle stability. It also offers quick acceleration and reliable cold starting because of its efficient and small electrode design.

 

The wire electrode is made of fine iridium that not only helps in the ignition but also burns away the buildups of carbon that form on the plug’s tip. One of the best features of the ACDelco 41-114 GM Original Equipment spark plugs is that they come with a one-piece suppressor that keeps the electronics of your vehicle safe by blocking the radio frequencies.

 

The seal of the suppressor prevents combustion leakage and also ensures long and efficient electrode life. These spark plugs are also tested to high standards and specially designed and engineered to offer better durability than aftermarket.

 

Pros

• Backed by General Motors
• Offer better durability than aftermarket
• Come factory fitted and offer enhanced performance
• Offer original equipment specifications

Cons

• Come with a higher price than many spark plugs
• Difficult naming makes it confusing to find the right product

 

8. Denso Iridium 4719 TT Spark Plugs: Best Value for Money

 

Buying an original equipment spark plug for your vehicle doesn’t necessarily mean that you’ll need to pay a higher price and that’s exactly the case with the Denso Iridium 4719 TT spark plugs. It’s one of the most affordable yet durable and high-performing products that money can buy.

 

These spark plugs are offered by Denso which is considered to be a reputable brand and it offers its automobile parts around the entire world. The Denso Iridium 4719 TT spark plugs not only meet but also exceed the original equipment specifications.

 

They are made of premium-quality materials and their twin tip iridium electrode makes them one of the best products for exotic, luxury, and economy vehicles. The company offers spark plugs for almost all types of vehicles and these larger spark plugs allow you to achieve superior fuel economy and more power.

 

Pros

• Come with top-end twin-tip technology
• Meet or exceed original equipment specifications
• Offer superior fuel economy and enhanced performance

Cons

• Limited availability
• Too many counterfeiters are present

 

9. NGK 7634 Black Spark Plugs: Best for Older Vehicles

 

If you are on a very tight budget and looking for spark plugs, consider going with the NGK 7634 Black spark plugs. Time-proven performance, a comprehensive applications catalog, and consistently high quality make these spark plugs an outstanding choice.

 

They come with a noble metal wire tip and standard electrode that meet original equipment specifications as NGK is known as an OEM supplier. These standard spark plugs are made of copper and were originally used in many Japanese motorcycles, SUVs, and cars.

 

If you have an older vehicle, you can use these spark plugs without worrying about performance issues. However, if the NGK Black Spark Plugs with model 7634 are not compatible with your vehicle, you can look for other spark plugs manufactured by NGK. That’s because all of them are made with high-quality materials and they offer great performance.

 

Pros

• Great value for the money
• Best for older vehicles
• Offer durability and excellent performance
• Consistent factory fit and reliable OEM quality

Cons

• Offer a shorter lifespan
• Come with electrodes that have a non-wire tip
• Not recommended for newer models

 

10. Champion 71 Copper Plus Spark Plugs: Best Copper

 

Champion is one of those brands that offer spark plugs with proven performance to power some of the most high-performance and fastest vehicles in the world. The Champion 71 Copper Plus is no exception as they offer durability and dependable performance.

 

They ensure accurate heat range control and ensure a longer lifespan than many coppers spark plugs. Superior and reliable corrosion resistance is one of the most notable features of these spark plugs and they are built to meet SAE and ISO standards.

 

These spark plugs also flaunt the patented technology of the “Champion” for the SAC-9 semiconductor resistor. It ensures maximum radio frequency and electromagnetic interference suppression. Better yet, these spark plugs also use TinTac/Ultraseal Shells. It means you won’t need to use any anti-seize compound to install these spark plugs to ensure the best protection against corrosion.

 

The copper core electrode of the Champion 71 Copper Plus plugs offers enhanced heat control and increased conductivity. It also ensures accurate heat range control to optimize the performance and increase the lifespan of the spark plug.

 

Pros

• Offer maximum RFI and EMI suppression
• Equipped with SAC-9 semiconductor resistor patented technology
• Proven performance
• Affordable price tag
• High-quality materials

Cons

• Doesn’t work with all small engines
• Less durable than platinum and iridium spark plugs

 

Frequently Asked Questions?

 

Who Makes the Best Spark Plugs?

 

All the spark plugs that we have mentioned in this list are offered by reputable and reliable brands. However, Bosch, NGK, and ACDelco are some of the most reputable brands and they are known for making the best automobile products including spark plugs.

 

Do Spark Plug Brands Make a Difference?

 

Yes, buying spark plugs from reputable brands allows you to have a high-quality product. The most important factor to consider while buying new spark plugs is to follow your manufacturer’s recommendations.

 

Do Expensive Spark Plugs Matter?

 

The cost of efficient spark plugs is a crucial consideration when buying new ones. Since you need a suitable replacement for the proper operation of your car, you should pay close attention to quality.

 

Better performing, durable, and high-quality spark plugs usually cost more and you should not compromise these factors to save a few bucks.

 

Bottom Line

 

Spark plugs play an important part in promoting effective combustion and provide you with a smoother and more enjoyable driving experience. As a result, when the necessity comes, drivers must replace them.

 

Such replacements would frequently necessitate appropriate selections, and for some, making the proper decision may feel a little daunting. We hope this guide will help you choose the best spark plugs for your vehicle, that not only offer the best performance but also a long lifespan.