From a dealer, maybe VW part number 7C0 857 749F probably cheaper from MAN but a different number. You need the correct one with the seatbelt warning contact / wiring although for models before 2025 may be OK without the contact.
There may be two versions, pre July 2024 and post July 2024 (2025 Models) although they both have the same part number.
Always double check the part number, don't rely on my quote above.