If you’ve been having trouble seeing out of the back window of your second generation 2016, 2017, 2018, 2019, 2020 and 2021 Mazda CX-9 when it’s raining or snowing outside, you may need to change the rear wiper blade. Check out the DIY tutorial for the procedure (with the OEM blade size in inches and the compatible replacement part numbers) by clicking on the text link or thumbnail image below.