10 Best Spark Plug Wire Sets of 2021

Jerry Wilson
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The best spark plug wire sets are incredibly useful for any vehicle with a spark plug. Not only are they vital for keeping your vehicle running smoothly, but they can also make a huge difference in performance when you pair the best wires with the optimum spark plugs.

The wire sets are a bit more complicated than a set of spark plugs, but they are not as difficult to install or confuse as a distributor cap.

Spark plug wires are small metal tubes or wires that usually come in a set of four. Inside each of these wires is a fine copper wire that connects to the ignition coil or spark plug. These copper wires are what actually conduct the electricity from the ignition coil to the spark plug.

These are the best spark plug wire sets of 2021 to invest in for your car, truck, or motorcycle.

NameCategoryProduct
NGKBest OverallNGK
Taylor Cable 64628 Blue 8mm High Energy Spark Plug Custom Wire SetBudget PickTaylor Cable 64628 Blue 8mm High Energy Spark Plug Custom Wire Set
MSD 32829 Super Conductor Spark Plug Wire SetUpgrade PickMSD 32829 Super Conductor Spark Plug Wire Set

1. NGK

Our rating: 9 / 10

NGK

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Pros:

  • Wide range of applications
  • Low-quality ceramic give exceptional burn-out resistance
  • Pulley grooves for up to 10% less resistance
  • Perfect for popular street and stock cars

This spark plug wire set from NGK is suitable to be used with a wide range of engines, from stock car engines to tuned racing engines. It can be used for drag racing as well, and it helps to deliver maximum performance and improve driving economy.

The NGK (8034) RC-HE76 Spark Plug Wire Set comes with the spark plug wires and the high-quality ceramic core spark plugs with a resistor that is made from new materials. Some of these materials are a mixture of metals, ceramics, and impregnated carbon and thread.

The spark plug wires offer up to 10% less resistance than the standard spark plug wires. If this could be reproduced throughout the complete ignition system, you’re looking at a not-so insignificant increase in HP. So, you can expect this kit to last very long. It also comes with replacement pulley grooves if need be.

2. Genuine Toyota 19037-62010 Spark Plug Cord Set

Our rating: 9 / 10

Genuine Toyota 19037-62010 Spark Plug Cord Set

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Pros:

  • Affordable
  • Easy to install
  • Gives your engine that original look
  • 10-year warranty

It’s important to make sure your spark plug wires are in perfect condition. If they’re not, your engine will be at an increased risk of electrical problems. These spark plug cords from Toyota are the perfect way to give your engine that original look!

Not only are these spark plug wires easy to install, they have been tested to safely deliver 600 volts and contain no lead. They’re also DOT compliant with a rating of 66012.1 and meet SAE J1667 with an assurance of living up to their 10-year warranty.

These spark plug wires set6 can be used with standard spark plugs 6mm 3/8”, 7mm, 9/16”. They are not compatible with small engines.

3. NGK

Our rating: 9 / 10

NGK

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Pros:

  • Very Durable Iridiums
  • Consistent Sparking
  • Industrial Lubrication is Reliable Under Harsh Conditions for Long Service Life
  • Guaranteed Highest Possible Performance and Durability in Water and Temperature Intensive Environments

The NGK RC-XX90 spark plug wire set offers a combination of durability and performance that results in consistent sparking and reduced service intervals. It comes with a set of wires that deliver the best performance in the most extreme conditions.

These extremely durable iridiums offer a long service life and a reliable connection to quicken the spark. Iridiums are encircled with high-alloy silicone steel to assure the highest possible performance. It guarantees industry-leading longevity in water and temperature intensive environments.

The NGK RC-XX90 spark plug wire set is an extremely durable and well-designed plug wire set for your vehicle. These wires provide excellent service, and you could forget about them for their entire life of use.

4. ACDelco 746U GM Original Equipment Spark Plug Wire Set

Our rating: 9 / 10

ACDelco 746U GM Original Equipment Spark Plug Wire Set

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Pros:

  • Have come from GM car dealership’s installed on their cars
  • Experienced high temperatures and extremer pressure
  • Feature a nice fit with excellent electrical conductivity

Cons:

  • Have been designed for specific year models, which the company doesn’t specify.
  • The ACDelco 746U is a do-it-yourself spark plug wire set from the ACDelco GM Original Equipment Spark Plug Wire Set.

This high-perfoamce set features a convenient plug to wire end distance of 15.5 inches, which means it will fit without crimping or cutting.

They come with a 1 year warranty, which assures you that they will last for a very long time, though the reviews indicate that many of these sets have been lasting one even for two times longer than that.

The only thing that we didn’t like about them was that the company doesn’t specify for what car models they have been designed.

5. NGK 54058 Spark Plug Wire Set

Our rating: 9 / 10

NGK 54058 Spark Plug Wire Set

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Pros:

  • Consistent performance
  • Easy installation
  • Reasonably priced

A lot of people think that spark plugs are the most misunderstood vehicle part. In fact, they often get confused with primary and secondary ignition systems. So, maybe we’re at fault as well for not specifically explaining what a spark plug does. According to NGK, the name comes from the original spark plug’s location, positioned at the number one cylinder of supercharged V engine.

There are several factors that affect spark plugs, the most crucial ones being the voltage level they can produce and the electrode gap. There are other factors that come into play as well, but they significantly vary depending on the vehicle type.

So, if you have a question about spark plugs, or you’re looking for advice on how to choose the best spark plug for your vehicle, check out what Dr. Gasket has to say. We’ll also talk about the type of spark plug wires that are suitable for your vehicle type, depending on the type of spark plug you’ll choose, and the type of plug boots that will be best suited for your car, truck or SUV.

6. Taylor Cable 64628 Blue 8mm High Energy Spark Plug Custom Wire Set

Our rating: 9 / 10

Taylor Cable 64628 Blue 8mm High Energy Spark Plug Custom Wire Set

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Pros:

  • 8mm Thick
  • Taylor Cable Brand
  • High Energy Spark Plugs

I am brand loyal to the Taylor Cable brand and love their high energy spark plugs. They are one of the best spark plug wire sets on the market and a popular favorite among professional and amateur racers alike.

These wires are designed to work with high energy ignition coils for a more powerful spark. This means that the spark jumps more gap, resulting in more combustion, which increases power, torque, and fuel efficiency.

This set comes with two spark plug wires and four spark plugs. The wires are 8mm thick and the length is 6.5 feet. So, they are longer and thicker than most other brands on the market. This set also comes with Taylor’s one-year money-back guarantee, so you can try out the product risk-free.

7. Motorcraft WR5934 Spark Plug Wire Set

Our rating: 8 / 10

Motorcraft WR5934 Spark Plug Wire Set

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This spark plug wire from Motorcraft is one of the best economical options in the market today. It has the cheapest price per foot compared to your other options. The trusted Motorcraft brand is always a safe bet, ensuring that your new windshield wipers are long-lasting and you’re not overpaying for quality.

This one comes with an improved ignition coil, as the WR5934 from Motorcraft has less resistance than OEM wires. It delivers high power transfer and low energy loss. Plus, the spark plug wire set has integrated boots for a longer life. Like all Motorcraft products, this one also comes with a one-year warranty from Ford Motors.

The WR5934 is very well made and you can expect years of use from it. However, a few units have issues concerning the boot. According to some reviews, the boots aren’t as durable as advertised and can fail after a few months of use.

8. Denso 671-8062 Original Equipment Replacement Wires

Our rating: 8 / 10

Denso 671-8062 Original Equipment Replacement Wires

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Pros:

  • Teardown and repairable
  • Good quality and price
  • Lifetime warranty
  • 100% factory-tested

If you’re looking to replace your spark plug wires but don’t want to spend much, give these original equipment replacement wires a shot. This kit comes with one pre-assembled wire set and five individual wires to replace your original set in one easy purchase.

The Denso wires are an original equipment part with the same high standards and performance of OE parts. They’re Teflon insulated for extra protection and constructed from high-conductivity copper for improved performance.

These wires are spark plug boot style to resist water and oil. The Posi-Lock connectors are EPDM and provide excellent voltage flow. There are also anti-corrosion washers in the boot to help prevent possible leaks.

9. MSD 32829 Super Conductor Spark Plug Wire Set

Our rating: 8 / 10

MSD 32829 Super Conductor Spark Plug Wire Set

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Pros:

  • Easy to install
  • Secure fit
  • No problems with connectivity
  • Well-made boot and end caps

14 gauge, 4 boots.

This MSD spark plug wire set is one of the best performing ones around. The 32829 performs well, and seems to be one of most popular spark plug wire sets in the market.

The MSD super conductor sets are a thick 8.5 mm, and they’re made with quality materials. The price of the wires is also quite reasonable, making it an excellent budget buy. The set comes with four wire boots, which won’t fall apart when you work to put them on, and four end boots, which will also stay put when put in place. The application for these spark plug wires is extremely versatile, and you can use them for all your vehicles.

10. ACDelco 9748GG Professional Spark Plug Wire Set

Our rating: 7 / 10

ACDelco 9748GG Professional Spark Plug Wire Set

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Pros:

  • Great Customer Service
  • Value for money

The ACDelco 9748GG Professional Spark Plug Wire Set is good for all vehicles and delivers good value for your money. The set of wires is made by a well-respected auto parts manufacturer that’s been around for a long time.

The ACDelco 9748GG Professional Spark Plug Wire Set is ideal for those who are looking for basic spark plug wires that deliver value for money. The 18 gauge wires are heat resistant and have sturdy ceramic insulators that can handle the high temperatures that undoubtedly build up when your engine is running.

ACDelco also has a great customer service team that is always ready to help you out if you need any assistance or have any questions about your ACDelco product.

Frequently Asked Questions (FAQ)

Do high performance spark plug wires make a difference?

If you are going after a performance car (or hot-rods, etc), high performance spark plug wires can make a difference. However, if you are not going for performance, then it will be unnecessary to upgrade the standard spark plug wires that come with your car.

Stock and even premium spark plug wires are designed to be effective for the modern long and short duration combustion and the high levels of specific heat that burners generate. The wires and the spark plugs themselves are all more efficient due to the current technology as well. Part of the main reason for upgrading spark plug wires is if you are looking for a way to get to the next level of performance.

Here's one good example of plugs that stand up to harsh environments well, and ones that don't:

Is there a difference in spark plug wires?

There is a big difference between the two most common types of spark plug wires, silicone and copper. Both have advantages and disadvantages that should be taken into account when making your selection.

What makes a good spark plug wire?

Well, we certainly can’t tell you exactly what you’ll like, but we do have some recommendations for you to consider. First of all, since you’re probably going to change the spark plugs with a new wire set, you might as well get one that has wires designed specifically for your vehicle’s engine.

Generally, you’re going to get the best performance out of a wire set that’s capable of dissipating heat effectively. The classic copper core, wrapped in silicone insulation isn’t as effective as it used to be back when it was used religiously.

We advocate for a shielded wire set for optimal protection from external static electricity and radio interference.

How much resistance should a spark plug wire have?

As a general benchmark, the resistance should be around 100-125 ohms for a stock engine. When you get the wires, adjust them to this value.

When putting together a performance-oriented car with high-heat spark plugs, you may want to look for spark plug wires with a higher resistance which will help to prevent misfiring and blowing fuses.

You don’t want to go overboard with the resistance though.

If the resistance is too high, you may start to notice reduced engine performance and because of the higher resistance, you may also run into issues with your vehicle’s computer.

Conclusion

There are many different spark plug wire sets that you can buy in 2019. It can be overwhelming once you start checking the reviews as they can often be contradictory. We decided to keep it simple and go with our favorites. We feel that our recommendations are the best spark plug wire sets because they provide a high quality of performance but with a reasonable price tag. There are a few other options to ponder, but these are what we think are the best.

Our Recommendation

NameCategoryProduct
NGKBest OverallNGK
Taylor Cable 64628 Blue 8mm High Energy Spark Plug Custom Wire SetBudget PickTaylor Cable 64628 Blue 8mm High Energy Spark Plug Custom Wire Set
MSD 32829 Super Conductor Spark Plug Wire SetUpgrade PickMSD 32829 Super Conductor Spark Plug Wire Set