N
Velvet Digest

What is the best brand of spark plug wires?

Author

Christopher Snyder

Updated on April 20, 2026

10 Best Spark Plug Wire Sets – Reviews
  • Denso 671-8062 (Class E Rated Spark Plug Wire Set)
  • NGK EUX065 (Spark Plug Wire Set with a Triple Crimp Connector)
  • Motorcraft WR5934 (Good Spark Plug Wire Set)
  • MSD 32829 (Super Conductive Spark Plug Wire Set)
  • ACDelco 9748GG (Widely Compatible Spark Plug Wire Set)

.

In respect to this, what makes a good spark plug wire?

Solid Core: Solid core spark plug wires typically utilize stainless steel or copper, which conducts electrical current very well. For that reason, solid core wires have lower resistance than other wires to get maximum energy to the plugs.

do high performance spark plug wires make a difference? What is the Difference Between High Performance Spark Plug Wires and Regular Ones? High performance spark plug wires are made to provide a lower core resistance, a greater resistance to engine heat and chemicals, and a higher degree of radio suppression.

Similarly, are NGK Spark Plug Wires good?

Best Overall: NGK Spark Plug Wire Set They provide a powerful spark to the spark plugs for an instant and powerful start. The wires are also fitted with positive locking and are corrosion resistant.

What is the difference in spark plug wires?

The true difference between these sets of plug wires lay in the resistance of the wires. The carbon core wire had a much higher resistance rating and limited the amount of electrical charge that was passed to the spark plugs. Low resistance suppression wire cut so that the layers are visible.

Related Question Answers

How long do spark plugs wires last?

If the vehicle is equipped with spark plug wires, they should be checked at the time of spark plug replacement. When they are old and crispy, just disengaging them from the spark plug can cause them to come apart. A quality set of spark plug wires can generally last around 60,000 to 70,000 miles.

How often should I replace spark plug wires?

That's why it pays to replace your spark plug wires before they wear out. We recommend changing them during spark plug changes (whenever your owner's manual recommends, usually between 60,000 and 100,000 miles).

Should you replace ignition coils with spark plugs?

The most common component to replace in conjunction with the ignition coils are the spark plugs. Worn spark plugs can cause unnecessary load on the coils and there is often some overlap in the labor required to replace both components.

How do I know if my spark plug wires are bad?

Common signs of failing spark plug wires include a decrease in power, acceleration, and fuel efficiency. In addition, the engine light coming on or visible damange to the cables can be signs of a failing wire.

Does changing spark plug wires improve performance?

Even if you spend extra cash on the best iridium spark plugs and install them expertly, if you don't replace the spark plug wires at the same time you're probably wasting both time and money. If the wires don't perform well, engine performance and gas mileage suffer.

Does spark plug wire length matter?

Spark plug wires come in different lengths, so match up the lengths with the original wires so the wires fit properly and do not droop or rub. Replace ONE WIRE at a time to avoid mixing up the firing order (very important!).

Can you reuse spark plug wires?

The good news is that making your own set of spark plug wires is relatively easy, and you can even reuse the old boots if they're not disintegrated. A custom set of wires can clear reconfigured distances after an engine swap.

What will bad spark plug wires do?

Bad spark plug wires can interfere with the electrical current flowing to the engine, making it difficult for the engine to complete the combustion cycle. An incomplete combustion cycle can cause an engine to misfire, which means your car may jerk, stumble, or briefly lose power.

Are spark plug wires all the same?

All Spark Plug Wire Is Not The Same. There are four major types of spark plug wires but the only one safe to use with all street vehicles is carbon, high-resistance suppression wires. All spark plug wire is not the same.

What resistance should spark plug wires be?

For copper core wires, the resistance will be 1 to 6500 ohms, inductive wires the resistance will be 2200 to 8000 ohms per 1 meter or 650 to 2500 ohms per foot and carbon wires, the resistance is 10000 to 23000 ohms per 1 meter or 3000 to 7000 ohms per foot.

How do you test a ignition coil?

Connect your multimeter to the positive terminal or pin of your coil, and to the high output terminal that goes to the spark plug. Most ignition coils should have a secondary resistance falling somewhere between 6,000 to 10,000 ohms;however, refer to manufacturer specifications for the correct range.

What are spark plug wires made out of?

Description. Spark plug wires have an outer insulation several times thicker than the conductor, made of a very flexible and heat-resistant material such as silicone or EPDM rubber. The thick insulation prevents arcing from the cable to an earthed engine component. A rubber "boot" covers each terminal.

How do you check a spark plug coil?

Testing the Coil
  1. First, turn off your car's engine. Then consult your owner's manual to locate the wire that attaches to one of your spark plugs.
  2. Next, reattach the spark plug wire. Hold the spark plug with a pair of insulated pliers and touch the threaded bare end of the spark plug to a grounding surface.

Should you put anything on spark plugs?

Apply a thin coat of anti-seize compound to the spark plug threads, being careful not to get any near the lower threads. Thread one of the new plugs into the spark plug hole until you can no longer turn it with your fingers, then use a torque wrench to tighten it to the specification listed in your service manual.

Can spark plug wires add horsepower?

Wires, and plugs inherently do not in any form way or fashion develop horsepower, as long as your igniting the air/fuel mixture. If you get any increase in power, its simply because your existing plugs/wires are worn, or damaged.

Why do spark plug wires have so much resistance?

ELI5: Why do spark plug wires have high electrical resistance? The high resistance reduces the radio interference from the spark this prevents it from interfering with radios and TVs. It also reduces the Electromagnetic interference, which in a modern car can play havoc with the electronic engine management system.

Does the type of spark plug matter?

The most important detail in a spark plug is matching your engine's design. Copper has high conductivity and low price, but also a shorter lifespan. Harder platinum and iridium plugs cost a little more and tend to last longer, but the best fit is always the one designed for your engine.

How do you measure spark plug wires?

Start by measuring from the center of the distributor terminal. As you go down the length of the wire and get to the spark plug boot, there are 2 ways to finish measuring, depending on the type of spark plug boot you have. Finish measuring to the center of the terminal. Finish measuring to the of the inside the boot.

Do new spark plugs make a difference?

Reason 1: New spark plugs help keep your engine at its peak performance and efficiency levels. Of course, every vehicle on the road will misfire from time to time. But as those misfires get more and more frequent, they also get more troublesome. Reason 2: New spark plugs can significantly improve cold starting.