If it doesn't work you can always return it.
I don't know why you would want to use something other than an OEM wiper arm. I just get replacement blades for my 2004 4Runner. They aren't very expensive and they last a long time.
Amazon.com: Genuine Toyota - 4Runner Rear Wiper Blade - 85242-35021 : Automotive (assembly $21.99)
You can get/order the blade refill from your dealer
85214-22440 ($10.99)
In 2020 I replaced the rear wiper arm because the plastic was getting dried out from the sun. I replaced the blade also
Amazon.com: Genuine Toyota Wiper Arm : Automotive
I use Bosch wiper blades available on Amazon for the front