This mount is used to secure the leading edge of the Van Compass engine skid plate on Sprinter 3500 models, meaning your Tiffin Open Trail! The 3500 model does NOT include a crash bar "over run" mount like the 2500, so Van Compass decided to make their own version of the bracket. They can also be used on vans where the factory over run has been left off or previously discarded.
This mount is included in the 3500 specific skid plate kits.