If your serial number begins with MKFC1 or MKFC2 then your Mario Kart DX has a 42" monitor in it. This is what you will need to replace it. It is a 43" monitor with brackets that will help it fit it in to a Mario Kart DX cabinet.
If your serial number begins with MKFC3, then your Mario Kart already has a 43” monitor in it. You should o...