NGK IZFR6K13 Laser Iridium Spark Plug

Was a little disheartened to see the boxes crunched and squished, but the plugs looked ok. So far so good! NGK always has the best quality. Would like to see better packaging for these as the porcelain can be a bit fragile.

Installed in my 2006 4 cylinder Honda Accord for California. I used NGK website to select. This model is for California emissions, while the one that Amazon is not (model ends in 11). I did previously install the Amazon recommendation and ran for 125,000 miles and passed smog emissions many times. So don't worry if you already installed the other one.Tips for install:0. Use manufacturer website (and also check Rock Auto) to select correct spark plug for your car and state (California is the one difference).1. I watched a youtube video to review procedure.2. Consider a new sparkplug socket if yours is older. I had an older 5/8 spark plug socket. The rubber part that holds spark plug kept getting stuck to the plug which is deep down in engine socket. Luckily I had a long needle nose to get it off. I will probably by a new spark plug wrench next time. I had about a 8 to 10" socket extension for between spark plug wrench and the ratchet. This is necessary for the deep socket in engine.3. When removing spark plug, it was "crunchy" and would be very hard to turn. I was nervous about stripping the engine threads. I found that if I backed it out a 1/2 turn then back in 1/4 turn and then out 1 turn and in 1/2 turn it came out easier. This in/out motion is how you tap threads so I thought it might help. It did.4. Replace at recommended mileage. I ran the first plugs 100,000 miles and they looked new but replaced anyways. I ran 2nd set 125,000 and they looked worn and harder to remove (maybe the extra 25,000 miles, maybe because car has 225,000 miles). I'd recommend 100,000 mile change, check your engine recommendation.5. Not sure about this one: I used anti-seize on the threads even though NGK says no. It just seems right to use it.6. Don't expect much change in performance with new plugs. I might notice a little smoother engine noise, but barely.

Seemed to do the trick. Replaced the plugs in a 2008 Honda Fit Sport. I figure they must be high-speed if I don't know quite what they're made of...you oughta' read the posts about whether, or whether not to put anti-seize on the threads - holy guacamole - in spite of all the pseudo-science I put a light dab of anti-seize and tightened to factory spec. Haven't had one fall out yet...FWIW I replaced these while I was in there replacing the coils with a set of Beck/Arnleys - at ~170k mi. I also ended up adjusting the valves - which were ALL out of spec, in spite of routine "dealer maintenance".

I purchased these plugs (4) in May of 2018. I have less than 20k miles on these. My original plugs (also NGK Iridium’s) had over 150K miles and looked way better than these after 20K. A few months ago I noticed a stutter under load and at high speed (50-60mph) in my 2008 Honda Fit. Never would have I thought the plugs were bad. All of the plugs were so worn it was surprising that the engine ran. I also had new Hitachi coils. I just purchased new NGK plugs (same part number) from Advance Auto and noticed some differences but nothing that would make me think I did not have OEM NGK plugs. I contacted NGK customer service and was told that there are some very good counterfeits out there (especially on Ebay and Amazon) and they would need to do a lab analysis to really confirm, but highly suspected that I had some counterfeits based on the poor performance and how fast the electrode disintegrated. See attached photo. I would not be opposed to accepting a refund or replacement of this order.

There are too many fake auto products from China. You have to be very careful where you shop followed by close inspection to ensure you got genuine product. Go to the manufacturer website to learn how to identify fakes versus the real thing. My order was verified as being the real deal and worked great. Thumbs up!

Product model and size is same. I ordered 4 pieces but came only one in parcel. I complained to amazon.Their response was very good and they send 3 more pieces without any additional charges. Exactly fitted to my honda city 2013 1500CC

I've been having issues for the past few months with my 2007 Honda Fit Sport stuttering when at idle. With no support from the local dealership after they turned me away stating nothing was going wrong with my car, I turned to the internet.After doing research on Fitfreak.net (a forum devoted to owners of all generations of Honda Fit), I got all my questions answered. It seems the 2007/2008 Honda Fit models have issues where the ignition coils fail quicker than normal wear and tear. Within minutes, I ordered the following items:1. Four NGK (6774) IZFR6K13 Laser Iridium Spark Plug, Pack of 1.2. Four Hitachi IGC0053 Ignition Coil.3. GearWrench 80546 5/8-Inch x 6-Inch Swivel Spark Plug Socket.4. Permatex 81150 Dielectric Tune-Up Grease, .33 oz Tube.After collecting all the items, I was ready to go. In this case, I followed a "Official DIY: Changing Spark Plugs" forum post on Fitfreak.net and did everything myself.Once I completed everything, I took the Fit for a test drive. The car was running back to normal.Have a 2007/2008 Honda Fit Sport? These are the OEM spark plugs. I can guarantee you that after taking out the original ones and stating, "The internet was right."

They're ok, I read the 6774 was recommended for CA with a .52 gap, To me it felt like I lost some power so I reduced the gap to .45 and it seems a little better. Next time I'll go with NGK 6994.