Purchasing OEM Toyota parts

I am new here and a first time Toyota owner. I MUST say I have been a lifelong SOLID old school Chevy truck enthusiast and owner. But I have turned a new side and fell hard for these Tundras !!! GREAT TRUCKS !!! Anyway, when it comes to old Chevy trucks parts are everywhere so never a need to order most items. So my question is when it comes to “ critical “ parts like the transmission where can I order OEM Toyota parts like the Torque Converter and rear main seal and Front seal etc. at a much better price than a Toyota Dealership ? I was priced at $1,400 for torque converter at dealership seals are not that expensive. YES , I am doing all the work myself in my brothers Race car shop on his lift.

 

Always google the part number and plug it in to your dealers parts department website (as well as a bunch of dealers around you) the online price is always 20 percent or 50 percent or even more cheaper than the counter price and all dealers have different prices