Denso K16R-U Original: https://amzlink.to/az0acNx2URd1q (Amazon Affiliate)
Denso PK16R11 Platinum: https://amzlink.to/az0NPFj1Ip5nV (Amazon Affiliate)
Tekton 24330 3/8″ Drive Torque Wrench: https://amzlink.to/az0zgEalJO1Q2 (Amazon Affiliate)
Denso Spark Plug Installation: https://densoautoparts.com/spark-plug-installation
Toyota Spark Plug Guide: https://www.toyota.com/toyota-owners-theme/pdf/09_SparkPlugs2015_final%5B1%5D.pdf