Mercury - Spacer Kit for 4500 Series Dual Controls Control Mounting Spacer 889220A02. Overview. This spacer kit is one of those parts you usually find yourself ordering after the control is already mounted. Everything fits, technically, but once you move the handles you realize they're a little too close for comfort. Maybe they brush the console, maybe they just feel cramped. This spacer lifts the whole dual control up about two inches, which is usually all it takes to make things feel right aga