CCS retrofit kit for Model 3/Y appears in Tesla Parts Catalog

Charging Adapter For Tesla Model Y S X 3 USA CCS1 Combo Adapter Charging Gun Conversion Head DC AC Power Converter - AliExpress

If you want to use CCS2 Combo Adapter you have to install this EU charging unit to Tesla Model 3 (built before 2021).

EU Charging Unit Tesla Model 3 CP ECU, ASSY, GEN 3, 1092755-82-B, CCS, Retrofit

Tesla adds CCS adapter to North American shop, official retrofit coming in early 2023

LF Bros CCS1 Charger Adapter for Tesla Model 3/X/Y/S, Max 250 KW/ 250Amp Super Fast DC Charging Adapter, CCS Combo1 Charging Adapter Kit Come with Portable Silicone Case, Compatible with Tesla

DIY Installing CCS Retrofit in US Model S, Page 3

Retrofit CCS compatibility onto earlier (NA) Model 3 - DIY approach

Tesla slashes price of CCS retrofit for Model S and Model X

Retrofit CCS compatibility onto earlier (NA) Model 3 - DIY approach, Page 15

HANSSHOW CCS Charger Adapter 250KW Power DC Fast Charging Compatible