Does a 03 s430 radio fit a 00 s430?

Yes, a 2003 S430 radio can fit into a 2000 S430, as both models are part of the same generation of the Mercedes-Benz S-Class. However, compatibility may depend on specific features and wiring harnesses, so it's advisable to check for any differences in connectors or additional functionality. If you're considering the swap, ensure that the mounting and electrical connections align properly.