🔥 NGK (3459) ZFR5N V-Power Spark Plug: Boost Performance & Efficiency with 1-Pack Review

Spark plugs should have gaps depending on the car but worked fine. I can't comment on durability as they have just been installed.

I've typically driven them at least 40,000 miles in my 2005 Jeep Wrangler and even after that many miles they still work.

I've been using these connectors on my 1997 Jeep Wrangler TJ for about 100,000 miles now and have had no problems. Of course, if you can get them from the Revain store for 98 cents, that purchase is a no-brainer!

This is the second set of NKG spark plugs I have installed on my '93 Jeep Grand Cherokee. The set I replaced could have been cleaned and adjusted, but it had deteriorated to the point where the gap was out of spec. For the price I just exchanged them. 50,000+ Miles Many Jeep owners trust their Jeeps with championship brass and forks. I've used both with roughly the same results. I just like NJK

My 2001 Cherokee with a 4.0 coil pack engine had a slightly rough idle. The forks we used were fairly new, properly spaced, looked clean, and were the recommended forks. Tried a different plug. Fancy fork. No improvement. It might actually make it worse. Then I tried these NGKs. Always had great success with NGK in other engines and this was no exception. Idling is smoother and throttle response and overall performance are improved. Very happy. Feels like new again.

Bought six of these to replace the spark plugs on my dad's 2004 Jeep Grand Cherokee WJ 4.0 inline six. Same part number as the one I pulled (which has never been changed before). I had to adjust the spacing a bit to get it up to factory specs, but no worse than any other time I've changed spark plugs. The price was a bit higher than the local auto parts store but they didn't have these connectors so it was easier to order them yourself along with some other Jeep parts.

I don't remember installing these connectors on my 2001 Cherokee 4.0L straight-six three years ago, but when I wanted to reinstall In this one Earlier this year I pulled six of these NGK spark plugs out of my Jeep only to find I could leave them there for another three years. Very clean, electrodes and ground and insulators. Mine had 0.035" of play and these measured 0.001" to 0.003" more so wear was minimal and had no noticeable impact on performance or mileage. I changed them because I…