Lippert ™ pin boxes take your towing experiences to the next level. Eventually, however, there may come a time when your pin box becomes old, worn out, or even damaged, and needs to be replaced (and don’t worry, we’ve always got you covered). The Lippert L05 standard pin box is a direct replacement for your Lippert 1621 pin box on your 5th wheel trailer. This standard pin box has a gross vehicle weight (GVW) rating of 15,500 Pounds with a king pin that connects to any 5th wheel trailer hitch, so you can rely on it to get you through the countless adventures that await you on the road.