2012 Mazda 6s Duratec 3.7 Water Pump Replacment (Part 2)

The 3.7 V6 Duratec engine is known for water pump failures destroying the engine. Common symptom is a noise behind the timing cover and CEL code P0016. If you can catch it before it skips timing or coolant destroys the bearings, it is still a huge job in the Mazda 6s, due to the engine and subframe needing to be moved to get the timing cover off.
This 6 part series covers how I tackled this in my home garage. This will not be over quickly, you will not enjoy this. The job took me about 40 hours and 700 dollars in OEM parts (full timing chain service). I tried to cover my process as I went along. Hopefully it helps you decide whether you want to tackle this yourself or not.

[@michaelmcinnis7635]

I own a 2009 Mazda6 S with 258,000 miles, the engine got swapped somewhere around the 130,000 mark. I'm probably going to be doing this replacement in the future. These videos are the perfect resource for someone like me. Thank you for posting this.

[@joelreyes9600]

Holy cow my water pump went out at 165,000 miles after 7 years of owning it im just gonna junk it because they charging me 3,500 to fix and i wanted to fix it myself but after seeing this video sadly im just gonna junk it