SeaStar Solutions
SeaStar Hydraulic Steering Kit HK6400-4 (No Hose)
$1,766.39
$1,471.99
USD
Free Shipping
The SeaStar HK6400-4 Hydraulic Steering Kit is SeaStar's go-to kit for outboard boats and the OEM choice for center consoles and cruisers. It's rated for single or multiple non-power-assisted outboards up to 600 HP combined, at speeds up to 60…
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Key Features
For single or multiple non-power-assisted outboards up to 600 HP combined
Speeds up to 60 MPH
The OEM choice for center consoles and cruisers
Patented steering lock valves keep engine feedback out of the wheel
Low-friction hydraulic system, 4.9 turns lock-to-lock
Independent engine tilt on twin installations
Dual-station capable with an extra helm, hose and fittings
Positionable stainless ORB fittings for easy hose routing
End gland sealing system for protection from salt water
Meets ABYC and NMMA standards
What's in the Box
SeaStar 1.7 front mount helm (HH5271)
SeaStar front mount cylinder (HC5345)
SeaStar hydraulic steering fluid (2 qt)
Fittings, bleeder kit and installation instructions
Sold Separately
SeaStar hydraulic hoses
Tie bar kit and hardware (twin engines)
For single or multiple non-power-assisted outboards up to 600 HP combined
Speeds up to 60 MPH
The OEM choice for center consoles and cruisers
Patented steering lock valves keep engine feedback out of the wheel
Low-friction hydraulic system, 4.9 turns lock-to-lock
Independent engine tilt on twin installations
Dual-station capable with an extra helm, hose and fittings
Positionable stainless ORB fittings for easy hose routing
End gland sealing system for protection from salt water
Meets ABYC and NMMA standards
What's in the Box
SeaStar 1.7 front mount helm (HH5271)
SeaStar front mount cylinder (HC5345)
SeaStar hydraulic steering fluid (2 qt)
Fittings, bleeder kit and installation instructions
Sold Separately
SeaStar hydraulic hoses
Tie bar kit and hardware (twin engines)
| Dimensions | Dash hole: 3" · Helm footprint: 4-7/16" · Shaft: 3/4" tapered · Turns lock-to-lock: 4.9 |
| Compatibility | Single or multiple non-power-assisted outboards up to 600 HP combined, with ABYC standard engine tilt tubes. Speeds up to 60 MPH. Not recommended for boats over 75 MPH or with surface-piercing props. For cylinder fit by engine, see the SeaStar HC5345-3 engine list. |
| Installation | Installation instructions and bleeder kit included. Hoses sold separately. Twin engines need a tie bar kit and extra hardware. Professional installation recommended. |
| Vendor | SeaStar Solutions |
| SKU | TEL-HK6400-4 |
| Availability | In Stock |
Does this kit include hoses?
No. Hoses are sold separately so you can choose the right length. We'll help you pick the right SeaStar hose kit.
Will it work on twin engines?
Yes. It's rated for single or multiple outboards up to 600 HP combined, with independent engine tilt. Twins also need a tie bar kit and extra hardware.
Can I add a second steering station?
Yes, with an extra helm, hose and fittings.
Is it right for a fast boat?
It's rated for speeds up to 60 MPH and isn't recommended over 75 MPH or with surface-piercing props. For high-performance single-engine boats, see the SeaStar Pro kit.
Will the cylinder fit my engine?
The kit uses SeaStar's HC5345 cylinder, which fits most Force, Honda, Johnson/Evinrude, Mercury, Nissan, Suzuki and Yamaha outboards. Send us your engine and we'll confirm.
Not sure which kit is right for your boat?
Click Speak with an Expert or email support@tidalstandard.com.
No. Hoses are sold separately so you can choose the right length. We'll help you pick the right SeaStar hose kit.
Will it work on twin engines?
Yes. It's rated for single or multiple outboards up to 600 HP combined, with independent engine tilt. Twins also need a tie bar kit and extra hardware.
Can I add a second steering station?
Yes, with an extra helm, hose and fittings.
Is it right for a fast boat?
It's rated for speeds up to 60 MPH and isn't recommended over 75 MPH or with surface-piercing props. For high-performance single-engine boats, see the SeaStar Pro kit.
Will the cylinder fit my engine?
The kit uses SeaStar's HC5345 cylinder, which fits most Force, Honda, Johnson/Evinrude, Mercury, Nissan, Suzuki and Yamaha outboards. Send us your engine and we'll confirm.
Not sure which kit is right for your boat?
Click Speak with an Expert or email support@tidalstandard.com.
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Manufacturer Warranty
All systems come with a full manufacturer warranty. Coverage varies by brand and product — contact us for details.
Free Shipping
Free shipping on all orders. Large systems ship via freight with white-glove delivery available.
Expert Support
Our specialists are available 7 days a week to help with selection, installation, and setup.