Kit includes fill tube and push-pin to vent Use for all inboard/outboard, outboard, and inboard Seastar hydraulic helms For outboards only One single station requires 2 quarts of Seastar hydraulic fluid to fill Use for all inboard/outboard, outboard, and inboard Seastar hydraulic helms. Kit includes fill tube and push-pin to vent. For outboards only. One single station requires 2 quarts of Seastar hydraulic fluid to fill.