🔌 Denso (3353) SK16R-P11 Iridium Spark Plug One-Pack Review

As a new buyer, I was skeptical about the performance of this spark plug. However, after installing it in my automotive, I am impressed with the results. The Denso SK16R P11 Iridium Spark Plug has proven to be efficient in producing a strong spark, which has contributed to improved fuel economy and better engine performance. The iridium construction of the electrode ensures a longer-lasting spark plug, making it an excellent investment. However, the only downside is its relatively higher price…

Bought for my 2005 Lexus is300. These are Denso's durable iridium tipped connectors. I tried researching the Denso website and I think they mixed up their codes. These are long life versions of spark plugs with a (mandatory) iridium tip.

I was looking for spark plugs after my last Denso kit broke on my 2002 Lexus IS300 after 5 years. I exchange candles for other candles every 2 years shortly before the smog. I have used NGK Iridium IX BKR6EIX-11, NGK Laser Iridium IFR6T11, Denso Iridium IK16 and now this one. I think they have a little bit more pizzazz at each stage. Of course, my old connectors were almost dead with the iridium tips completely out of the gap marks. This means that ALL the iridium elements are pre-sealed and…