NGK ZFR6FIX 11 Iridium Spark Plug Review

These forks are great. When I had the right tools to change the spark plugs in my 2002 Honda Civic EX, they went to work with ease and worked like a champ.

The seller sent it as soon as possible. Thanks for that. This is the right side. I carefully set the gap as advised for the iridium connectors. No dramatic setting. Many Thanks.

They work great on probably any car, but Honda loves them. I installed the kit on my 1997 Honda Prelude along with an NGK 8019 HE65 spark plug wire kit and the car couldn't be happier.

I installed these on my 03 Durango as part of my 90K service. After cleaning the throttle body, the car ran smoother. No noticeable change in mileage or anything but peace of mind and they fit just like they should.

I have a 2005 and 2007 Yamaha Majesty - they're just starting out - so I think it's doing its job. It actually runs pretty quiet for a cylinder. Scooter. Easy installation, good price, perfect fit.

These are factory plugs. I have driven over 140,000 km with my old ones. Because they worked so well, I wouldn't put anything else in them. The 3 plugs in my 6 cylinder Acura were a bit sloppy. The stoppers are prefilled. The car runs great after the replacement.

I've been using them for several years now and they impress me a lot. They dampen your engine significantly when revving up on the freeway. They don't give you any extra power because spark plugs don't, but they increase power, making you feel like you have more.

Bought these for my aging Civic LX 01. Just get out of the old and just into the new. I've noticed a pretty decent increase in performance after installing it and I'm hoping my engine can breathe easier now. It sounds crazy, but Honda are very picky about the type of spark plugs they run and they prefer NGK. And dosequis.

I didn't really need to change the spark plugs but when I changed the timing belt I got a spark plug gasket kit and I'm glad I did. One of my seals was broken and oil got into the spark plug chamber. Cleaned, put on all new seals and exchanged all candles for these. My previous spark plugs were also NGK so I didn't notice any difference in fuel economy or performance but for the price they were worth the change. The first lasted 60,000 miles and was still good, but now I know I'll be good for…