Installed these in my car and started it to pops and lugging. Removed one and verified the Gap - NGk plugs come gapped for the application - these were for 2017 Civic 1.5t. These plugs were over .042, they needed t be ‘030, was causing misfires. Regapped and moved on, don’t drive hard so had then in a few hundred miles and then got on throttle hard to merge on interstate and car shut off! It was a constant misfire, which sends these cars into haywire. I then removed plugs and compare directly to the removed stock plugs and these look cheaper and are Shorter!!! Plug was not even reaching all the way into the combustion chamber:/. Not happy with this purchase at all, but don’t expect to be able to return used plugs so sharing my experience.
First pic is stock removed and these plugs I had purchased at first glance the differences didn’t appear to me. 2nd pic is after gapping them properly and after my misfire and removal. Will not buy these again nor from this seller.
Nice value, but stay away from them. A big mess, I had 3 cylinders misfired, finally found out because of these spark plugs. The brand new OEM one I bought from a dealer, they are expensive and the seller told me they good for around 100,000 miles, normally you don't replace them. Look at the pic they have the same part # but they are slightly different. Even the length of the spark plug, Don't cheap on your car, if you love your car, that I just learned.