Abstract: This specification discloses a cooling apparatus for a marine stern drive unit which has a conduit for carrying water from below the water level to a position over the marine stern drive unit so that water can be sprayed on the stern drive unit. A water receiving aperture is in communication with a lower portion of the conduit and opens generally horizontally and forwardly for receiving water into the conduit. A water dispensing aperture communicates with an upper portion of the conduit and dispenses the water on the exterior of the marine stern drive unit thereby cooling a portion of the marine stern drive unit out of the water.