SeaStar PA1200-3 Marine Hydraulic Power Assist 12V/24V

SeaStar PA1200-3 Marine Hydraulic Power Assist Steering Unit 12V/24V

The Dometic SeaStar Power Assist PA12003 is an electronically controlled gear pump integrated into the hydraulic steering system between the helm and steering cylinder. It enhances steering by directing fluid from the helm pump through the gear pump to the steering cylinder(s). The helm controls both speed and direction, while the power assist functions as the active component that amplifies steering force. The gear pump’s speed is proportional to the helm’s movement—turning the wheel faster increases pump speed. When not in use, the power assist remains idle, drawing only standby power.

SeaStar Power Assist Update:

• The SeaStar PA1200-3 replaced the PA1200-2 & PA1200 as the the direct replacement in February 2025.
• The new part uses -3 ORB fittings, along with a few improvements in the internals for reliability.
• Photos will show the PA1200-2*

Choose Free Items Above:

• We offer 2 quarts of SeaStar Hydraulic Steering Fluid on us, as well as any SeaStar Hydraulic Steering Hose. For the hose enter a specific part number, for example 24 feet of Standard SeaStar Hose would be entered as HO5924, MAX length of 34ft. To view all available hoses, you can View all SeaStar Hose HERE. Free items are shipped ground.

Applications:

• Single outboards 150HP and above
• Heavy 4-stroke outboards
• Twin/Triple outboards
• Inboard systems where rudder torque makes steering difficult or uncomfortable

Features & Benefits:

• Significantly enhances steering comfort
• Reduces wheel effort for easier maneuverability
• Easy installation – a simple add-on to the existing SeaStar manual steering system
• Automatically detects system voltage (12V or 24V)
• Maintains a consistent number of turns lock-to-lock
• Compatible with the SeaStar Power Purge System
• Works with marine autopilots
• Includes mounting bracket for wall or floor installation
• Comes with a wiring harness for easy setup

Specifications:

• Input Voltage: 12 or 24VDC (Automatically recognized)
• Max PSI Rating: 1000PSI
• Typical Current Draw: ~3 Amps
• Max Current Draw: 50A Max, 60A Peak (1A System electronics)
• Fluid Compatibility: SeaStar Steering Fluid HA5430H or MIL Spec H5606QT
• Harness Length: 15'
• Warranty: 2 Years

Dimensions:

• Dimensions Height: 11.1"
• Dimensions Width: 6.2"
• Dimensions Depth: 6.5"
• Weight: 13lbs ~

Tools Required:

• 1/2" and 3/4" Open-ended Wrench
• Wire Cutters, crimpers, soldering iron
• Screwdriver for attaching mounting plate

Downloads & Resources:

• SeaStar Power Assist Product Sheet [PDF]
  
• Power Assist Installation Instructions [PDF]
• Power Assist Fill and Purging Instructions [PDF]
• SeaStar Steering Catalog [PDF]
• SeaStar Hydraulic Steering Selection Guide [PDF]
• Dometic Seastar Hydraulic Build Guide [HERE]

Power Assist & Auto Pilot Combo:

• PA6010: Power Assist w/AP1219 12v Type 1
• PA6020: Power Assist w/AP1233 12v Type 2
• PA7010: Power Assist w/AP2419 24v Type 1
• PA7020: Power Assist w/AP2433 24v Type 2

Related Products:

• PA1225-3 PA1200-3 with a 25ft harness
• PA1200-3HP High Power for all duo-prop Suzuki outboards
• AP1219 12v type 1 autopilot pump 60cu.in./min
• HA1205 SeaStar Power Assist retro-fit kit
• HA5430H 1qt SeaStar hydraulic steering fluid
• Seastar Hose
• Seastar Helm Pumps
• Seastar Cylinders

Typical Power Assist Applications:

PA1200-3 Dimension Diagram:

Questions?

• Tech Support: Tech Support Page
• Check Stock: Stock Inquiry Page
• Request a Shipping Quote: Request Quote Page

• No Sales Tax on Purchases Outside of California
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• FREE FedEx Priority Overnight Shipping to the Contiguous 48 States
• Formerly Teleflex, Seastar is now Dometic Marine
• Seatech Marine Products, Inc. is an authorized dealer, and service center for Dometic Marine

International Customers: We Ship Worldwide, Shipping Cost May Quote Too High on Our Web Site, contact us for a quote.