NGK (4469) LFR5AIX-11 Iridium IX Spark Plug (8 Pack)

Customers find these spark plugs work well, with one mentioning their Chrysler 300 Hemi runs great with them. Moreover, the plugs receive positive feedback for their quality, fit, and ease of installation. Additionally, customers appreciate the engine performance, noting improved throttle response and smoother operation, with one reporting a 1 mpg increase in fuel efficiency. The plugs are genuine NGK products with correct gapping, and customers consider them good value for money.