NGK (9160) RC-ZE21 Spark Plug Wire Set

I've never seen a car start faster, Incredible!

Replaced my 2000 Miata Special Edition spark plug wires. Fit was perfect, car runs great.I'm very happy with this set of wires.

Easy replacement foe 1994 miata 1.8

Item is as described!

The NGK ZE21 Spark Plug Wire Set is a great product. Like all NGK products, it just fits right without having to modify it. The spark plug wire set is made for the 1990 - 1997 Miata and the length of the spark plugs wires is perfect. I like pre-made spark plug wire sets and not the universal type that require the end user to cut the spark plug wires (to size) and then to crimp on a terminal for each spark plug wire.When you purchase the NGK spark plug wires make sure you purchase the "blue" ones which are the premium set and not the standard "black" spark plug wires. The spark plug wires should be changed every 30,000 miles on a Miata to maintain performance.These spark plug wires are exactly what is needed for maximum performance, so don't bother purchasing the so-called "high performance" spark plug wires because you won't get a better spark plug wire for your money.

Update: I got the second set and they fit just fine. Seems like the earlier set I got was a dud. Go figure.Previous Review Below:For my 99 Miata 1.8. Got a set that did not click onto the spark plug when seated in the engine. Clicked on just fine when outside the engine. Seems the wire was placed too far up the boot.... not great in terms of their quality control. Read a few things online about people having to modify them and scoot the wire down... junk to me if you have to modify it to fit. Returning for a replacement... let's hope this was just one set I got...

5/5 Genuine NGK Product. Quick and easy installation process.Was having idling issues with my 91 NA Miata. Misfiring was causing the engine to die. Changed spark plugs and improved by a large margin but was still trying to die. Purchased a new wire set and installed in about 10 minutes, immediately fixed the issue. Now the car is running better than ever.

TL;DR Having misfires? Here's the fix (along with some new plugs).For about a month or two after I bought my 1994 Miata (1.8L), the engine had been "burping" and shaking every now and then at low RPM, making odd noises, vibration and not a whole lot of power below 2000RPM.Guy I bought it from said that the plug wires had recently been changed, and they looked in pretty darn good condition - so I tried setting timing and changing out the spark plugs for NGK ZFR5F-11 plugs, which helped a fair amount. However, it was still burping and heaping around in a way it shouldn't have.So as a last resort, I got around to buying these plug wires, because why not. They came in a dinky cardboard box and visually looked no different from the ones on my car, but they take 2 minutes to change so I installed them anyway.WOW, what a difference. Launches are smooth and the engine has a tremendous amount of low-end grunt, downshifts are buttery smooth, everything is so soft and smooth.Just buy them if you have any doubts, they're a maintenance item on miatas anyway and they're cheap.