Its called the steering block, or, the steering knuckle, but, i can tell you from experience, parts are not available for that car, so, the only way to actually fix it is to try and rig one from another vehicle. And, even though there are some sites that say they are Exceed RC, they arent. They are a cheap Chinese off brand throw away. You can sometimes find them new on eBay for less than $60:
https://www.ebay.com/itm/162377210765