NGK (9160) RC-ZE21 Spark Plug Wire Set

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.

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

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

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.

I bought these to replace my original 92 Miata wires at 136,000 miles, due to the car sputtering every time I stepped on the gas. Installed in minutes with some electrode grease and they work like a charm, no more sputtering.I'm currently looking to buy a second Miata due to their legendary reliability and every photo showing the engine has the trademark blue wires running from the plugs to the distro.The wires are labeled in case you take off all four wires instead of removing and replacing one at a time and trying to guess the order, since they do have to be installed in a certain order... ;-)A must-have replacement for Miata owners.

good product

Theses NGK wires fit my '96 Mazda Miata perfectly! As stated in another review they are numbered for each cylinder so they can be matched to the ignition coil numbers and basically made to the exact length needed to reach each cylinder so there isn't a bunch of loose plug wires along the top of the head. Coupled with a new AC/Delco ignition coil and NGK Iridium plugs my old girl runs great now plus the blue wire color adds an interesting, clean look to the engine compartment.

Item is as described!