NGK Iridium IX spark plugs are one of the best spark plugs for the Lexus SC400. They offer excellent performance and durability, and they can help to improve your car's fuel economy. Iridium IX spark plugs are also very affordable, making them a great value for the money.
Denso Iridium Power Spark Plugs
Denso Iridium Power spark plugs are another great option for the Lexus SC400. They offer similar performance and durability to NGK Iridium IX spark plugs, but they are slightly more expensive. However, Denso Iridium Power spark plugs are still a great value for the money.
Bosch Platinum+4 Spark Plugs
Bosch Platinum+4 spark plugs are a good choice for the Lexus SC400 if you are looking for a more budget-friendly option. They offer good performance and durability, and they are very affordable. However, Platinum+4 spark plugs may not last as long as NGK Iridium IX or Denso Iridium Power spark plugs.
When to Replace Spark Plugs
The spark plugs in your Lexus SC400 should be replaced every 30,000 miles or so. However, this may vary depending on the type of spark plugs that you are using and the driving conditions in your area. If you are not sure when to replace your spark plugs, it is always a good idea to consult with your owner's manual or a qualified mechanic.
