Best Spark Plugs 2021 Buyer`s Guide

• Have you ever planned to take your family out for a weekend vacation, only to wake up to find your car is not starting?

You then proceed to call your mechanic, and he tells you that the car is not starting due to a faulty spark plug that you installed. Well, that is not a good position to find yourself in; especially when you consider the psychological torture your family will go through when they hear the bad news. The good news is that you don’t have to go through that situation any more. This best spark plugs 2021 buyers’ guide and review will provide you with all the information you need as you buy a spark plug for your car.

Whether you have a light car or a heavy-duty van, spark plugs plug play a vital role in your vehicle. But which is the best spark plug for your car? When you check the nearby store or check online, you will come across thousands of options, which will leave you confused. Lucky for you, we have prepared a spark plugs 2021 buying guide to ensure you have all the details needed to make an informed decision.

Product	Type	Key Benefits	Price
Autolite APP104 Double Platinum Spark Plug	Platinum	Value for money	Check Price
Denso (4504) PK20TT Platinum TT Spark Plug	Platinum	Compatible with a wide range of models	Check Price
Bosch (4501) FGR8DQI Platinum IR Fusion Spark Plug	Platinum	Easy installation	Check Price
Denso (3297) SK20R11 Iridium Spark Plug	Iridium	Long-lasting performance	Check Price
ACDelco 41-993 Professional Iridium Spark Plug	Iridium	Improves cold engines	Check Price
Autolite APP5224 Double Platinum Spark Plug	Platinum	Delivers a smooth and stable ride	Check Price
NGK (5464) BKR5EIX-11 Iridium IX Spark Plug	Iridium	Extreme ignitability	Check Price

Buying Guide for Best spark plugs

Spark plugs are one of the most important elements when it comes to engine maintenance. However, most drivers or vehicle owners are completely unaware of the importance of these vital parts. Dirty, worn or old spark plugs will prevent your engine from performing to its optimal capacity. Therefore, installing the spark plugs for gas mileage will ensure your engine utilizes less fuel and runs cleaner and smoother. Replacing your spark plugs regularly offers the following benefits.

• New spark plugs ensure you engine performs at the highest efficiency levels and achieves peak performance. Every vehicle will misfire at some point on the road. However, as those issues become more frequent, they might lead to serious issues on your vehicle. For example, they can lead to wasted gas, increased exhaust emissions as well as reduced power. Misfires can also make older vehicles to stall or buck. As you can see, you have enough reasons to ensure your vehicle’s spark plugs are in great condition.
• New spark plugs can also improve cold starting significantly. Dirty or worn spark plugs normally require stronger voltage to start a vehicle. Therefore, if your vehicle’s spark plugs are worn or dirty, you might end up with a dead battery. Therefore, ensuring your vehicle has a good set of spark plugs translates to lesser voltage requirements, which is good for your battery.
• You also need to consider catalytic failure. New or properly functioning spark plugs significantly reduce catalytic converter failure. A single misfire can dump a huge amount of fuel into your vehicle’s exhaust leading to overheating as well as converter damage. As much as your vehicle may run even after these issues, it will consumer a higher amount of fuel than normal situations. You also need to note that replacing your vehicle’s catalytic converter costs much higher as compared to a new set of spark plugs.

Therefore, when it comes to replacing dirty or worn out plugs, it’s advisable to do it as early as possible. Ensure you do it immediately when your mechanic advises you to do so. Doing that early enough helps to minimize further issues on your engine while keeping costs low. Having said that, here are some of the best performance spark plugs you should consider installing on your vehicle.

1.Autolite APP104 Double Platinum Spark Plug

Key Features

• Eliminates gap erosion
• Enhanced performance in all conditions
• Eliminates steering vibration for a smoother ride
• Optimizes engine performance while improving fuel economy
• Ensures quicker, cleaner and faster cold-starting

If you are looking for high performance spark plugs, then you should consider this one. The Autolite is also one of the best spark plugs for gas mileage. The company is also one of the most reliable manufacturers when it comes to spark plugs. The company has been around for a long while. The Autolite APP104 comes with a platinum-to-platinum firing technology, which is one of the best mechanisms for DIS engines. It also features a high nickel alloy electrode, thus drastically reducing misfires and gap erosion. To ensure a longer plug life and extended durability, this spark plug features a nickel-plated steel shell, which protects it against corrosion. It also comes with full platinum tips, while both the side and center electrodes feature high-quality platinum on the ground electrode. With these features, this spark plug is designed to deliver the highest levels of performance throughout its life span.

The center electrode is necked down to ensure a cleaner and quicker firing. With this combination, you can expect your engine to perform optimally while reducing fuel consumption. Also, quicker and cleaner firing minimizes reliance on the battery, thus ensuring longevity and durability of your battery. On the other hand, the full-copper core electrode ensures better performance regardless of the condition.

The manufacturer advices the buyer to follow the instructions listed on the product before changing any spark plugs. The Autolite APP104 comes with a 12-month warranty or 12,000 miles, whichever comes first. Therefore, if your spark plug develops any issues during this period, you can always return it for a replacement. Once you install this spark plug, you will notice a significant difference in your vehicle, including the acceleration. First, it reduces vibration on the steering, which means a smoother ride. Furthermore, they will not create issues on your plugs. If you are looking for one of the best drag racing spark plugs, then this one is a great choice.

2.Denso (4504) PK20TT Platinum TT Spark Plug

Key Benefits

• Offers value for money
• Compatible with a wide range of models
• Gives your vehicle a new lease of life
• Improved fuel economy

Denso remains one of the most prominent suppliers when it comes to advanced automotive technology for major automobile manufacturers. They have a clear commitment to producing safer automotive components. As much as spark plugs may not affect a vehicle’s safety as compared to other components, it’s a clear sign that this brand cares about its customers. With that sense of responsibility, you can expect the best performance from the Denso (4504) PK20TT Platinum TT. For your information, Denso is one of the pioneer companies as far as platinum spark plugs are concerned. Therefore, you can rest assured that you are in capable hands when you buy this spark plug.

The Denso (4504) PK20TT Platinum TT features an exceptional amount of thermal conductivity and dielectric strength, thanks to the purified alumina powder insulator content. With this feature, the spark plug is able to endure a great amount of stress. Also, the twin-tip technology, which features an 11mm ground electrode and 11mm platinum centre electrode and enhanced with titanium helps the flame to spread faster, thus delivering a richer combustion.

Furthermore, the combination of functions in this spark plug ensures optimal fuel economy. Therefore, once you install this spark plug in your car, van or SUV, you are assured of a better fuel economy. Furthermore, your vehicle will have a faster start and acceleration as compared to installing other spark plugs.

If you have never installed a spark plug before, then you have to be extra careful with your Denso (4504) PK20TT Platinum TT. However, it’s always advisable to use a certified mechanic since the company’s warranty doesn’t cover damage resulting from mistreatment or incorrect installation. This spark plug is one of the highest rated on the market and one of the best among motorists. Therefore, you can rest assured that you are buying a quality product that will meet your needs.

3.Bosch (4501) FGR8DQI Platinum IR Fusion Spark Plug

Bosch is a renowned manufacturer when it comes to vehicle parts. The Bosch (4501) FGR8DQI Platinum IR is designed to highest levels of wear and tear. Therefore, its durability is never in question. You might be wondering why you should buy this spark plug instead of the others available on the market. Well, the Bosch (4501) FGR8DQI Platinum IR offers various benefits, including:

It features fused iridium and a platinum center electrode, which deliver fast firing and ignition. Furthermore, the center electrode has been sintered to form an extended insulator nose, which results in a self-cleaning mechanism. Accumulation of dirt remains one of the biggest issues that leads to replacement of spark plugs. However, with the self-cleaning mechanism on this spark plug, you will deal with minimal dirt issues, which means longevity.

Furthermore, the advanced surface air gap firing system featuring the company’s unique four-ground electrode technology delivers a powerful spark to ensure efficient combustion as well as optimum horsepower. While all this is happening, the spark plug doesn’t increase its voltage requirement.

You should also note that its voltage requirements diminish over time as compared to other iridium plugs. Therefore, it will give your vehicle a reliable performance for a longer period. Furthermore, its factory pre-set gap makes it easy to install. In fact, you can do it on your own without taking your vehicle to a service center, thus saving you additional costs. Also, its four yttrium ground electrodes have been designed to resist spark plug oxidation and wear for exceptional performance and longer life.

4.Denso (3297) SK20R11 Iridium Spark Plug

The Denso (3297) is designed to deliver exceptional performance as well as high levels of durability. According to the company, it’s six times better than other spark plugs from the brand and 8 times better than spark plugs from other manufacturers. It is designed with the strength of iridium, therefore, you should not expect any issues of wear and tear.

Once you install this spark plug in your vehicle, you will notice immediate acceleration and performance. If you are planning to go for a time trial and you are worried that your vehicle is not up to speed, then you just need this spark plug. Most drivers love this spark plug over other models due to its faster acceleration and fast start. Also, despite its high levels of performance, it ensures your vehicle remains within optimal gas mileage. Therefore, you can rely on this spark plug if the existing one is worn out, dirty or damaged. You can always rely on Denso to deliver some of the best iridum spark plugs on the market.

Some drivers have complained that their vehicles make strange noises when they are idling. Well, if you are looking to change things in your vehicle, then you should consider installing this spark plug in your vehicle. It delivers stable combustion, even when your vehicle is in idling mode. Furthermore, its long life as well as high reliability is another reason why you should consider this spark plug. It also features iridium, which has a high melting point.

5.ACDelco 41-993 Professional Iridium Spark Plug

The ACDelco 41-993 is designed to fit most of the cars available on the market today. It features the latest spark plug technology to ensure great performance, reliability and longevity. Once you install this part in your vehicle, you will not worry about replacements any time soon. It also has one of the highest levels of wear resistance and durability. Since it’s made of iridium, you can expect better performance as compared to those made of platinum.

It delivers smooth performance as well as great engine idle stability. Once you replace your worn-out, dirty, or damaged spark plug with this one, you will notice a calm performance, greater performance and improved fuel economy. As an iridium spark plug, its design is small and efficient, which helps it to deliver quick acceleration as well as reliable cold starting. It’s also one of the best spark plugs for gas mileage.

In addition, its fine-wire electrode enables it to burn-away carbon deposits, which usually accumulate on the tip of the plug. With the removal of these deposits, you can expect your vehicle to start faster, which helps to eliminate over-reliance on the battery. It also features a one-piece suppressor seal, which blocks external and internal radio frequencies. It also comes with suppressor seal meters, which spark energy for extended electrode life while preventing combustion leakage.

6.Autolite APP5224 Double Platinum Spark Plug

The Autolite APP5224 double platinum spark plug is designed for drivers who crave exceptional performance and durability. As one of the best spark plugs for horsepower, it features platinum firing, which means you will not encounter issues of gap erosion. It also minimizes misfiring, thus ensuring you can expect high performance from your car even during extended distances. It also features a necked-down center electrode, for cleaner and quicker firing. Unlike other spark plugs, the Autolite APP5224 draws less voltage, which helps it to deliver quicker acceleration and easier starts.

Apart from being feature-rich, this is one of the best spark plugs for high mileage cars. It’s also one of the best spark plugs on the market as far as durability and performance are concerned. It also has a great fit and you will not encounter any issues during long drives. As far as fuel economy is concerned, the Autolite APP5224 delivers great gas mileage. If your engine has been misfiring, then this spark plug will solve some of those issues. You will experience better performance, improved fuel economy and a smooth ride.

7.NGK (5464) BKR5EIX-11 Iridium IX Spark Plug

NGK spark plugs are specifically designed for drivers who crave performance over anything else. As an iridium-based spark plug, you can expect extreme ignitability, superior-antifouling as well as improved throttle performance. With such a combination of great features, you have enough reasons why you should opt for this spark plug instead of the others on the market.

The NGK (5464) BKR5EIX-11 Iridium IX spark plug features a 0.6mm laser welded fine tip, which ensures high durability as well as a consistent and stable spark. In addition, the tapered ground electrode reduces electrical quenching effect. As long as you have this spark plug in your vehicle, you can expect nothing less than optimal performance, great fuel economy and no misfiring.

This spark plug also comes with a longer insulator nose, which prevents fouling, thanks to the longer insulator nose. On the other hand, the corrugated ribs that have been fitted on the insulator prevent flashover. It also features a triple gasket seal, which eliminates combustion gas leakage.

Iridium alloy is renowned for its extremely high melting point. Therefore, with this spark plug, you can expect high durability to electrical wear and heat. This combination of features makes it perfect for modern high-performance engines. It also delivers a faster and smoother driving experience without much stress when starting the car.

Our Best Spark Plugs Pick
When it comes to selecting a spark plug for your vehicle, it all boils down to individual preferences. However, having considered various models and brands, the NGK (5464) stands out as one of the best performance spark plugs on the list. It’s efficient, affordable and durable. Spark plugs from this brand also have the highest rating on different digital platforms.

4/5 (1)