Its a whole new sump. Basically its a 2 part sump. The top (or bottom) is steel, so if impacted, it will just dent, whereas the standar one is all ally and will just shatter with the risk of f*cking the engine up! he case of this new one being hit, you repalce the bottom half (the black bit) and leave the rest untouched. This means its cheaper and safer!
Rich