NGK 93911 LKR7AIX Iridium IX Spark Plug, Pack of 4

Came in individual packages and were as described. The plugs went into my e550 mercedes and have worked great, showing improved gas mileage over the replaced originals

as described!!! Did the trick!!

These pre-gapped plugs are great for your engine. It took me 1 hour to replace all my old plugs with these new ones in a V-8 Mercedes 550 engine. EASY. The NKG plugs are running smoothly and sometimes, as with these, small things can make a big difference. I had previously installed Bosch, but after 50,000 miles I felt they needed to be changed because I was seeing degradation in my fuel mileage. I will come back and update this review in 5,000 miles to tell you if and when my mileage has improved. I can already see a upgrade in engine performance just going about 10 miles.

Work as needed. great price and no issues with firing.

Got 8 of these plugs for my 2008 Mercedes S550 4Matic. I noticed an increase in acceleration immediately. I've only had them for a week now, so I can't comment on mileage, value, or longevity. But, they were easy to install. I found the torque settings on the NGK website. You probably won't need anti-seize on the plugs, as they are designed to be used without it. Keep in mind that if you do use anti-seize, that your torque settings could change. Would buy this brand again.