Best Automotive Replacement Single Lead Spark Plug Wires in 2022

Last update: November 21, 2022

Are all spark plug leads the same?

No, all spark plug leads are not the same. The most common types are copper core and iridium. Copper core spark plug leads are the most economical, while iridium spark plug leads offer the best performance.

Are NGK wires good?

Yes, NGK wires are good. They are a well-known and respected brand in the automotive industry. Their products are high quality and backed by a good warranty. They are a good choice for any vehicle.

Can you cut and splice spark plug wires?

Yes, you can cut and splice spark plug wires. You will need a wire cutter and a wire stripper. First, cut the wire to the desired length. Then, strip the ends of the wire so that the metal is exposed. Finally, twist the two wires together and solder them in place.

Can you replace just one spark plug wire?

If a spark plug wire is damaged, it's best to replace the entire set. However, if only one wire is damaged, you can cut the damaged wire and splice in a new piece of wire.


East Penn (03212) Duplex Jacketed Brake Wire Review:


In order to reduce voltage loss and provide redundancy in the event that one cable connection failed, I decided to run two separate 12 ga. cables back from the front junction box to each axle since the OEM cabling needed to be replaced. This was done in order to replace the entire brake system on our 2013 travel trailer after a complete mechanical and electrical failure during our last outing. I chose this cable since it was readily available in a reasonable length, offered in a range of wire gauges, and was reasonably priced. The cable's packaging and "handling" during the fitting and installation process generally left me impressed once I finished the work. The only reason I gave it 4 instead of 5 stars is because the individual copper strands that make up each wire's conductor appear to be thicker than what might be ideal (each wire in the cable is a little more rigid than I'd anticipated), despite the fact that it needs to be able to constantly flex where it is routed from the trailer frame to the axle when the trailer is being towed. As an electrical engineer with decades of experience in system installations, I did make sure that each cable was in a wire loom and had a stress-free "curl" in this area so it could follow each axle as it moved up and down without even a hint of binding or tightening, but I do believe that this cable would be better suited for its stated application if it was more flexible.



Grand General 55232 White 16-Gauge Primary Wire Review:


high-grade wire. incredibly happy with how thick the insulation feels. Even though I use it for low voltage power supply (12V, 15A, using two wires in parallel), I'd wager that it is probably safe for mains wiring. Remember to refer to your ampacity charts! Keep in mind that this wire is copper in fact. It's not even plated metal, in my opinion. I believe it to be solid multistrand copper. Ask me a question about this item and I'll try to answer if you want to know how many strands there are.



Grand General 55230 Black 16-Gauge Primary Wire, 25 Ft Review:


high-grade wire. incredibly happy with how thick the insulation feels. Even though I use it for low voltage power supply (12V, 15A, using two wires in parallel), I'd wager that it is probably safe for mains wiring. Remember to refer to your ampacity charts! Keep in mind that this wire is copper in fact. It's not even plated metal, in my opinion. I believe it to be solid multistrand copper. Ask me a question about this item and I'll try to answer if you want to know how many strands there are.



Grand General 55251 Red 12-Gauge Primary Wire Review:


The only issue with these wires, as has been observed, is that they are a little bit smaller than claimed. I purchased a size larger after reading those comments in order to get the desired wire gauge. The insulation is thick, which I suppose is a positive thing, but it makes the wire overall heavier than it should be. This is the only drawback.



Grand General 55261 Red 10-Gauge Primary Wire Review:


Two sets of wire-strippers concurred that this isn't exactly 10 awg despite the fact that I didn't take the effort to measure it and sincerely admit that I am unaware of the dimensions for 10 gauge wire. On both my older and newer strippers, I had to use the 12 ga slot, and I didn't shear much copper as you may anticipate for a 10 ga in a 12 ga slot. However, after looking at other cables, it appears that this is the norm.Despite being good and thick, the sheathing is still soft and pliable; let's hope that it stays that way. With electrifying effects, the cable was used to power/ground the Sound Ordnance B-8PTD powered subwoofer (125w).



Grand General 55260 Black 10-Gauge Primary Wire Review:


Two sets of wire-strippers concurred that this isn't exactly 10 awg despite the fact that I didn't take the effort to measure it and sincerely admit that I am unaware of the dimensions for 10 gauge wire. On both my older and newer strippers, I had to use the 12 ga slot, and I didn't shear much copper as you may anticipate for a 10 ga in a 12 ga slot. However, after looking at other cables, it appears that this is the norm.Despite being good and thick, the sheathing is still soft and pliable; let's hope that it stays that way. With electrifying effects, the cable was used to power/ground the Sound Ordnance B-8PTD powered subwoofer (125w).


Can you swap spark plug wires?

Yes, you can swap spark plug wires. The process is simple and only takes a few minutes. Just be sure to follow the instructions in your car's owner's manual.

Can you use any spark plug leads?

No, you cannot use any spark plug leads. The reason for this is that each vehicle has a specific firing order. The firing order is the sequence in which the spark plugs fire. If you were to use any spark plug lead, it would cause the engine to misfire.

Do spark plug leads make a difference?

If your spark plugs are firing correctly, then the leads shouldn’t make a difference. However, if your spark plugs are misfiring, then the leads could be the problem. The leads carry the electrical current from the ignition coil to the spark plugs. If the current is interrupted, then the spark plugs won’t fire correctly.

Does changing spark plug wires improve performance?

While there are many variables that can affect engine performance, some believe that changing the spark plug wires can create a noticeable difference. New wires could theoretically create a stronger spark, leading to better combustion and more power. However, it’s important to note that spark plug wires degrade gradually over time, so it may be hard to tell if there’s a significant difference unless you’re replacing very old wires. Ultimately, it’s up to the individual whether they think changing the spark plug wires is worth the time and money.

Does it matter what spark plug wires you use?

How long do NGK spark plug wires last?

NGK spark plug wires are designed to last the life of the vehicle. However, they may need to be replaced sooner if the vehicle is driven in severe conditions, such as stop-and-go traffic or off-road driving.