I picked up a copy of the parts catalogs from three local dealers. When I need a part I look for it in the catalogs and that provides me with the part manufacturer and the part number. I then google the part and determine who has the best deal. Most times it is Amazon that wins out, generally because of free shipping for prime.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054