The automatic transmission filter kit keeps contaminants out of the transmission fluid.
Most of the time replacing a transmission filter is spent removing the transmission pan and draining the fluid, it's not a difficult process.
If you are comfortable with removing the pan, popping out the old filter and installing a new filter, and then using the correct pan gasket to reseal the transmission.

Compatible with Toyota AC60E AC60F Automatic Transmission Filter Kit :
2016-2021 Tacoma

Replaces Part #: 044-0438, 0440438, 3533004010, 3533071010 automatic transmission filter kit.

NOTE: This is NOT a genuine part, it's a aftermarket replacement part manufactured by Allmotorparts.

NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.