Front mount helms are drop-in replacements for SeaStar Helm.. Compact design. Built-in lock valve for positive rudder lock. Integral relief valve for over-pressure protection. Compatible with Teleflex SeaStar cylinders, hoses and oil. 3/4" tapered aluminum shaft. Easily accessible lock valve and shaft seal for replacement. Convenient front of dash fill. Adjustable Boss Fittings compatible with Kit OB and Kit OBSVS hose kits and SeaStar hoses. Relief valve pressure: 1000 PSI