My first time changing serpentine belt on my 2007 4runner limited 4x4, it has 74500 miles (mostly hi-way miles). Toyota dealer quoted me around $200+ parts and labor. I purchased the belt from ebay store for $17.26 (Bando 7pk-2120). I was bit hesitant doing it because never done it before but, after watching several you tube videos, I felt confident to do it. It took me about 25minutes start to finish and extremely happy with the results. (old belt showed no sign of damage but, just wanted to be safe before a long trip and kept
the old one for spare) Now I would encourage every 4runner owners to tackle this and save about $200...Good luck.