You can definitely get replacement hardware for the Curt Trailer Hitch Receiver # C11418 that fits your 2018 Mazda CX-3; what you will need is the Replacement Hardware Kit for Trailer Hitches # RHK.
All you need to do is click # RHK, enter "C11418" in the "Hitch Item Number" box, select "Curt" from the drop-down menu, hit "Add to Cart" and you're set! view full answer...