"Dummy" Plug for Rotax Max Evo Kart Engines. This plug is optional for all Rotax kart engines, but covers the power-valve terminal solenoid plug with a cover that simulates connection, so that no water or debris can interfere with the harness.
On a Senior Max or DD2 this plug is not used, but for all Micro, Mini, Junior Max engines this would be installed to cover the harness juncture.