The Seastar Solutions HH6544-4 Classic Tilt Hydraulic Helm Pump is the world's most popular hydraulic marine steering helm, delivering smooth, efficient No Feedback Steering (NFB) for inboard, sterndrive, and outboard applications. Engineered for today's high-performance hulls, this 1.4 cubic inch displacement helm supports single or multiple outboard engines up to 700 HP combined and is the OEM choice for center consoles, cruisers, and a wide range of boat types up to 50 feet.
The -4 series represents a complete redesign of the classic tilt helm platform. New valve technology provides tighter, quieter, and more responsive steering while dramatically reducing common issues like chatter noise and flow noise. More durable check valves improve resilience during trailering, and a redesigned fill port plug simplifies routine maintenance. The HH6544-4 uses repositionable O-ring Boss (ORB) hose fittings for flexible, leak-resistant installation.
Key Features:
- 1.4 cu. in. (22.9 cc) displacement with 1,000 PSI relief valve
- Greatly reduced chatter noise from overrunning steering loads
- Improved check valve durability for longer service life and better trailering performance
- Eliminated flow noise when coming off hard-over position
- Decreased clicking sound of the lock valve spool during steering reversal
- Tighter, more responsive steering with improved "regrip" performance
- 48° tilt range (12° down / 36° up) with 5 positive lock positions
- Marine-grade aluminum shaft — accepts steering wheels up to 20"
- Standard 3/4" tapered steering shaft (1" per ft taper, 5/8" NF thread)
- Pre-loaded dual tapered bearings for minimal free play
- Shaft seals to prevent water ingress
- Maintenance-free design fits most styled and formed dashes
- Full compatibility with existing SeaStar hydraulic steering systems
- Includes repositionable ORB hose fittings
Supersedes / Replaces: HH6544-3, HH6544, HH5741 (some modifications may be required for HH5741 replacement).
Suitable for most hydraulic steering applications on inboard, sterndrive, and outboard boats. For single outboard vessels exceeding 55 MPH, consider the SeaStar PRO steering series.
