NGK (4589) IFR6T-11 Laser Iridium Spark Plug (8 Pack)

Works great on 01 Lexus GS430. Engine runs smoother now.

Mechanic at Lexus who installed them was blown away by the price! The perfect spark plugs for my 2008 GX470, very high end. The mechanic said they would help improve gas mileage a bit, they are exactly what the factory recommends, will last a long time, and they will help smooth out the engine as well. Very easy to install as they authenticated to the engine.

The NGK (4589) IFR6T-11 Laser Iridium Spark Plugs are a fantastic choice for anyone looking to boost their vehicle’s performance. After installing these in my boat, I immediately noticed smoother idling, quicker starts, and improved throttle response. Overall, these spark plugs deliver high performance and reliability. Highly recommended for any performance enthusiast! 1999 Toyota Epic Lexus V8.

I put these in my 2006 Toyota Tundra 4.7L V8 after having some misfiring issues. It turned out to be the ignition coil, but these spark plugs are running great and are reasonably priced. Much cheaper than paying for the dealership to replace and they're easy to install.

Compared with original replaced that were made I Japan... this weren't made in Japan and look different a bit... hope they hold well in the long run will monitor...