| Component | Likely Part Number | Notes | | :--- | :--- | :--- | | | HS5157 | Includes all O-rings & shaft seals | | Rotor Set (Gerotor) | HS5116 | 2.0 cu in displacement | | Upper Shaft Seal | HS5029 | Common failure point for leaks | | Bypass Valve Kit | HS5130 | Spring, ball, and seal | | Input Shaft Kit | HS5227 | Shaft, key, upper bearing | | End Cap Gasket | HS5044 | Paper or rubber composite |
system relies on four primary parts to function: the helm pump, steering cylinder, hoses, and proprietary SeaStar fluid. Seastar Hh5271 Parts Diagram
The main aluminum casting that contains all internal components. It includes the cylinder bore, the fluid intake and output ports, and the mounting flange. This part is rarely replaced unless cracked or severely corroded. | Component | Likely Part Number | Notes