This genuine Toyota serpentine belt is a direct replacement for your 2007-2010 Toyota Sienna 3.5L V6. It is a high-quality, OEM part that will ensure proper fitment and function. The part reference #1 on the diagram is included in this purchase. The Toyota serpentine belt is an essential component of your engine's drive system, responsible for transmitting power to various components. It is made to last with a 1-year warranty and replaces part number 99367-C2090. Don't settle for anything less than genuine OEM parts for your Toyota.