[developer]

So I just received my overpriced gaskets/washer for the transmission and the differential:

Differential fill plug gasket: SU00300122 - 24mm OD x 18mm ID x 2mm Crush
Differential drain plug gasket: TOY1215710010 - 24mm OD x 18mm IDx 2mm Crush
Transmission fill/drain plug gasket: SU00303626 - 24mm OD x 18mm ID x 2mm Flat

They all look to be aluminum but that is just a guess. All measurements were made with calipers.
Edit: The crush washers stuck to the magnet on the drain plug so I guess they are not aluminum

Left Image is the diff drain/fill gaskets and they look identical. They are the exact same outer/inner diameter and thickness. They are both crush type washer.

The right image is the transmission fill/drain plug gasket is the same size as the differential gasket but is a flat washer.

After I pull the transmission gasket I will compare the thickness of the used and the new gasket to see if the transmission flat washer did actually "crush".
Edit: The original flat washer was within a 1000th of an inch of the new flat washer so I would guess they are not meant to crush.

When I order the differential crush washers again I will just order two of the same part number instead of two different parts.