need new power adapter part for 2017 MacBook Air

Hi! My vacuum cleaner got a hold of the end of my power cord (the end that connects to the magnetic adapter. Shredded the plastic down to the copper wire. Is there any way to replace just that section, that is, the rest of the power cord is intact (novice here- the big square portion of the cord that you can then slide in and out the actual outlet portion of the power cord and power cord itself are both functional). Surely there must be a way... I appreciate any advice and apologize for the convoluted image. Thanks!!