The Boss RT3, or RTIII HTX, SD as commonly referred to is the newest line of Boss snow plows which are smaller plows for smaller trucks and require a specific mount undercarriage kit for your truck. Below, you’ll find all of the Boss plow mounts and undercarriage kits specifically for Toyota trucks. Find your mount below by matching your year and model of Toyota with the corresponding subcategory pertaining to your Boss RT3 HTX, SD Mount undercarriage. If you are only looking for a few replacement parts such as bolts, nuts or washers, SnowplowsPlus has you covered with the lowest prices and largest selection around. If you need replacement brackets, weldments, spacers, or pushbeam assemblies, you can buy them below and get the fastest shipping around.