OEM JZA80 Supra 6 speed V160 / V161 output shaft washer.
This is the washer that is used for the tailshaft to the back of the gearbox.
Note: This doesn't come in original packaging as Toyota doesn't sell them individually and I buy them in bulk to make sets. This listing is for a single washer and a total of four are required.
If you are looking for the nuts that go with this you can find them HERE