NGKSpark Plug SILZKR7B11 9723 Pack of 6

I recently installed the NGK SILZKR7B11 spark plugs, and I’m genuinely impressed. Installation was a breeze thanks to the pre‑gapped design and perfect OEM fit—no adjustments needed.From the very first start, my engine fires instantly and runs smoothly; acceleration feels crisper, and I’ve noticed about a 1–2 MPG boost on my daily commute.Highly recommend for anyone looking to sharpen throttle response and squeeze out a bit more fuel efficiency!

I pulled a spark plug from front bank of my '15 Santa Fe 3.3L v6 to determine the oem brand and designation. Engine runs great at 102k miles but mpg is slipping. Maint Schedule says to replace spark plugs at 105k, so I ordered the same as original, NGK SILZKR7B11. Watched a couple yt vids and followed the same procedure to replace rear bank plugs. Looking inside the intake ports, I decided to change the pcv valve, which I did not have, so will have to remove some of same parts again, for that. I suggest inspecting/cleaning or changing pcv valve while it is accessible when changing rear spark plugs.

They look and work good.

Work great & did notice better acceleration & more gas mileage.

Made a huge difference in my 2014 Kia Sorento SXL. They came pre-gapped to .044 which I double checked with a spark plug gapper. My engine fires instantly and runs smoothly. Gas mileage is better. I uploaded a picture of my old ones which were all fouled.

Excelent OEM replacement for my Kia Forte 2014. Will buy again.

The listing on Amazon contains the correct information, the spark plugs were indeed the correct ones for my car.

Excelente producto.