[PNWariya]

Found the official listing for the Ariya tow hitch receiver on Nissan's website:

T99T5-5MP0A - Tow Hitch Receiver - Class I - Genuine Nissan Accessory

• Secure towing strength with Nissan custom design. • Includes Ball Mount and Hitch Cap. • Requires Genuine Nissan Accessory Trailer Tow Harness (sold separately)

parts.nissanusa.com

The part number is T99T5-5MP0A.

The Nissan website now also links to your "local" dealerships so you can check them for availability and pricing, and one was showing a promotion for 15% off!