240J belt. Fits newer model FDX 2.0, FDX 3.0 and 4010. It has 5 ribs.
***Please note if you have an older FDX 2.0, your belt may have 4 ribs. This belt is larger and will not work. If you belt has 4 ribs, please see the Amazon link to purchase. We've tested this belt to work on those models.
https://www.amazon.com/gp/product/B00CJK39AC/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
Please note, video below is for models FDX 3.0, 4010 and 2017 to current FDX 2.0 models.