Mazda recommends spark plug replacement at 75,000 miles for our 2018 Mazda 6, so let's get to it. See the links below for the parts and tools I used:

NGK Laser Iridium Spark Plugs (ILKAR7L11 / 94124):
https://amzn.to/40QdwdB (affiliate*)

Nickel AntiSeize:
https://amzn.to/3pT83EO (affiliate*)

Dielectric Silicone Grease:
https://amzn.to/3Q4hlsj (affiliate*)

*Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!