The OEM iridium tipped spark plugs in a 3rd generation (2016, 2017, 2018, 2019, 2020 and 2021) Toyota Tacoma with the 2GR-FKS 3.5L V6 engine should be changed every 60K miles. Check out the DIY tutorial for checking or changing the spark plugs (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.
2016-2021 Toyota Tacoma 2GR-FKS 3.5L V6 Engine Spark Plugs Replacement Guide
