I have a snapper SZT18386BVE 38 inch zero turn.
Is there a generic alternative to the 7075031 handle dampener?
Looks like it is a Stabilus Lift-O-Mat 2947MD.
I suggest you take some dimensions and search Ebay or Amazon for toolbox lid shocks or dampeners. I am sure the dampeners you are looking for were designed for multiple applications.
Parts lookup and repair parts diagrams for outdoor equipment like Toro mowers, Cub Cadet tractors, Husqvarna chainsaws, Echo trimmers, Briggs engines, etc.