Dometic SeaStar BayStar HK4300A-3 Hydraulic Steering Kit – Compact Hydraulic Steering System for Single Outboards up to 150HP + 4 EXTRA STEERING FLUID

Upgrade your boat’s handling with the trusted performance of the Dometic SeaStar BayStar HK4300A-3 Hydraulic Steering Kit — a premium compact hydraulic steering solution engineered for single-outboard powered boats up to 150 horsepower. Designed to deliver smooth, precise, and low-effort steering, the BayStar system dramatically improves comfort, control, and overall driving confidence compared to traditional mechanical steering systems.

Ideal for center consoles, bay boats, flats boats, fish & ski boats, and smaller offshore applications, the HK4300A-3 provides responsive hydraulic performance while maintaining a compact footprint behind the dash. Whether you’re navigating rough offshore conditions or cruising through tight marinas, BayStar hydraulic steering offers reduced steering torque and exceptional reliability on the water.

This complete steering package includes the BayStar helm pump, compact front-mount cylinder, hydraulic steering fluid, fittings, and installation hardware. The “A” version is designed without hoses/tubing, allowing installers to customize hose length for the specific boat application.

Key Features:

• Smooth, effortless hydraulic steering performance
• Designed for single-outboard boats rated up to 150HP
• Compact helm and cylinder design ideal for smaller boats
• Reduced steering feedback and operator fatigue
• Corrosion-resistant marine-grade components
• Precision steering control at high and low speeds
• OEM-trusted Dometic SeaStar reliability
• Compatible with many popular outboard brands including Yamaha, Mercury, Suzuki, Honda, and Evinrude

Kit Includes:

• BayStar hydraulic helm pump
• Compact front mount steering cylinder
• 6 Hydraulic steering fluid
• Fittings and installation hardware
• Detailed installation instructions
• Tubing/hoses sold separately

Perfect for boaters looking to upgrade from mechanical steering to a smoother, safer, and more comfortable hydraulic steering experience, the HK4300A-3 remains one of the most popular steering systems in the marine industry.

What’s Included in the Dometic SeaStar BayStar HK4300A-3 Hydraulic Steering Kit

• (1) HH4314-3 BayStar Front Mount Hydraulic Helm
  Compact 1.4 cu. in. hydraulic helm pump designed for smooth, low-effort steering response.
• (1) HC4645-3 BayStar Compact Front Mount Cylinder
  Balanced hydraulic steering cylinder engineered for single outboard applications up to 150HP.
• (6) HA5430H Bottles of SeaStar Hydraulic Steering Fluid
  Premium hydraulic fluid required for proper system operation and long-term reliability.
• (1) HA5438 Helm Fill & Purge Kit
  Fill tube and fittings used to simplify bleeding and filling the hydraulic steering system during installation.
• ORB Hydraulic Fittings & Installation Hardware
  Necessary mounting hardware and connection fittings for helm and cylinder installation.
• Installation Instructions & Owner’s Manual
  Detailed setup, operation, and maintenance documentation from Dometic SeaStar.

Important Notes

• Hydraulic hoses/tubing are NOT included with the HK4300A-3 kit.
  This version is specifically designed for installers who want to choose custom hose lengths separately using SeaStar HO51XX hose kits.  
• Designed for:
• Single outboard powered boats
• Up to 150HP
• Boats capable of speeds up to approximately 55 MPH
• Standard outboard tilt tube applications