Seastar Solutions PA1200-3HP High-Pressure Hydraulic Power Assist Steering Unit 15' Harness 12V/24V

The SeaStar Solutions PA1200-3HP is a high-pressure, electronically controlled hydraulic power assist unit designed to dramatically reduce steering effort on demanding marine applications. Installed in the hydraulic steering circuit between the helm and the steering cylinder, it boosts steering fluid power to deliver smooth, automotive-style control — even under the heaviest loads.

The HP (High Pressure) model is specifically engineered for duo-prop Suzuki outboards and vessels with very high horsepower requirements, supporting a maximum system pressure of 1,000 psi. It includes a 15-foot wiring harness and uses ORB (O-Ring Boss) fittings for secure, leak-resistant hydraulic connections. The unit automatically detects and operates on either 12V or 24V systems with no manual configuration required.

The power assist functions as the working element of the steering system: the helm controls speed and direction, while the gear pump amplifies the hydraulic force delivered to the steering cylinder. Pump speed is proportional to wheel input — the faster you turn, the faster the pump responds. When steering is not active, the unit enters standby mode and draws minimal power. In the event of a power failure, the system automatically reverts to fully manual steering mode.

Key Features:

• High-pressure model rated up to 1,000 psi max system pressure (500 psi working load)
• Electronically controlled gear pump — proportional response to helm input
• Auto-detects 12V or 24V system voltage
• Includes 15-foot wiring harness and ORB fittings
• Simple add-on to existing SeaStar manual hydraulic steering systems (compatible with 1.4 to 2.4 cu. in. helms)
• Lock-to-lock turn count remains unchanged after installation
• Compatible with SeaStar Power Purge system and autopilots
• Wall or floor mountable — OEM or retrofit installation
• Suitable for multi-engine, multi-rudder, and multi-station setups
• Returns to manual steering mode in case of power failure
• Ignition protected per SAE J-1171
• Requires HA5482 EPS Fluid
• Approved: ABYC, CE, NMMA, ISO 10592
• Direct replacement for the discontinued PA1200-2HP (updated February 2025)

The PA1200-3HP is the current-generation -3 series unit featuring updated electronics and improved internal components for enhanced reliability. It is ideal for high-performance boats, heavy vessels, and multi-engine setups where steering load is consistently high. Note: Do not use with BayStar cylinders. Mount in a dry location, within approximately 10 degrees of vertical, and at least 24 inches from a magnetic compass.