NGK Iridium Spark Plug (LTR7IX-11)

If you're looking to get the most out of your 2014-2015 Cadillac XTS, these NGK Iridium IX spark plugs are a solid choice. They're built with a fine iridium center electrode, which is known for its durability and ability to maintain a consistent spark, even in demanding conditions. This helps with everything from getting the engine started smoothly to improving throttle response when you're on the move.

NGK uses a trivalent metal plating on these plugs, which helps prevent corrosion and makes them easier to remove down the road. The iridium alloy itself has a very high melting point, making it well-suited for today's engines that can run hotter. You can expect improved acceleration and better fuel efficiency with these installed.

This set comes with four plugs, which is what you'll need for your XTS. While they are a great upgrade over standard nickel alloy plugs, keep in mind that these are a colder heat range than the original equipment plugs for your specific model.