Front Mount Hydraulic Steering Helm - 2.0 cubic in. | Seastar HH5273-3 SeaStar Front Mount Hydraulic Steering Helm - 2.0 cubic in. | HH5273-3 Used in SeaStar Solutions marine hydraulic steering systems for single or multi-outboard engine applications up to 350 HP. Teleflex steering helm pump For single or multi-outboard engines up to 350 HP (700 HP for counter rotating twins) @ speeds up to 60 MPH Smooth low friction system makes steering effortless compared to mechanical steering systems 2.0 cu. in. displacement Small 4 7/16 in. footprint 3 in. cut-out hole size No Feedback steering alleviates prop torque feedback by locking out steering loads Fills from port in top of helm Standard 3/4 in. tapered shaft -5 ORB fittings allow hose to be pointed in any direction Number of wheel turns vary by cylinder used