Not difficult at
not difficult at all after removing the front passenger wheel and the shroud. That provided plenty of room to work from above and below on this mini project. You can do it! : )I have done my fair share of oil changes, brake pads, brake line replacements, ABS ECU replacements and such but I haven't touched anything relating to the pulleys/tensioners yet so I wouldn't know how difficult it is but judging by what I had go to through to take those crappy pictures, it does seem like a giant PITA LOL. I do have the offset box wrenches but if I had to perform this replacement, I think I'm going to try the flare nut wrenches that I currently have first since I don't want to round off any bolts but if any of you guys have replaced it, please post a step by step guide and the obstacles that have been encountered along the way.
I agree that $350 - 450 is outrageous but that was the price I was also charged for replacing the rear brakes so I'm not surprised at all and this led me down the path to DIY.
Also, I checked the price of the part that was listed PET2-15-980 and when I went through a few Mazda part sites, I see them listed for $100 - 120.
For the serpentine belt, I was wondering, would it be better to go with an aftermarket brand like contintental or should we stick with OEM?