These are U.S. Miliatry Surplus SEE Tractor Snorkels. A direct fit to all 406/416/404.0/421 Unimogs. The current factory original runs close to $300. We have provided side by side comparisons, this is an exact fit Milspec replacement. Add your favorite raincap or cyclone filter and you are ready to roll. ATTENTION THIS SNORKEL WILL NOT FIT A 404.1 Unimog. It does fit a 404.0 which uses the 406/416 Cab. A majority of the 404's in North America are 404.1 Trucks.