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Drivetrain

How to Replace Downstream O2 Sensor 2014-2018 Mazda 3

Created on: 2025-09-30

This video shows you how to install new TRQ oxygen sensors on your 2014-2018 Mazda 3.

Tools needed

  • Sandpaper

    Gloves

    O2 Sensor Socket

    Jack Stands

    Wheel Chocks

    10mm Socket

    Wire Ties

    Floor Jack

    Trim Tool Set

    Safety Glasses

    Pliers

2021 - 2021  Mazda  CX-9
2019 - 2021  Mazda  CX-5
2022 - 2022  Mazda  CX-9
2022 - 2022  Mazda  CX-5
2018 - 2021  Mazda  6
2013 - 2016  Mazda  CX-5
2014 - 2016  Mazda  CX-5
2014 - 2017  Mazda  6
2014 - 2018  Mazda  3

O2 Oxygen Sensor Set

Mazda 3 6 CX-5 2 Piece O2 Oxygen Sensor Set TRQ OSA61821

Part Details:

  • 2 Piece
  • (1) Upstream O2 Oxygen Sensor
  • (1) Downstream O2 Oxygen Sensor
$109.95
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