Your boat and its high quality Humminbird electronics are valuable and important to you. You want to keep them safe and secure. This white protective hard cover is for all 800 and 900 Series products and snaps on and off easily. It is not recommended for use while trailering your boat.

Fits:
858C
898C SI
917C
931C
937C
947C 3D
955c
957c
958c
967C 3D
981C SI
987C SI
997c SI
998c SI