Seastar Hydraulic Steering is a marine steering system that uses a helm pump, hydraulic hoses, and a steering cylinder to transfer steering input smoothly to an outboard or inboard engine. Designed for boating safety and critical control, it supports front or rear mount configurations, tilt helms, and pro-level setups, delivering reliable, sealed hydraulic performance for a wide range of boats operating at sea.
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1-2 weeks delivery time The SeaStar HA5419 Dashkit is designed for hydraulic steering systems, offering a 20° tilt for a comfortable and secure fit in hydraulic helm applications.
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$ 214.98
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1-2 weeks delivery time The SeaStar HA5431 Vented Fill Plug is ideal for steering pumps, allowing proper ventilation while maintaining a secure and tight seal for the system.
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$ 37.81
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1-2 weeks delivery time The SeaStar HA5432 Non-Vented Fill Plug is used for all SeaStar hydraulic steering helm pumps except for the uppermost one in multi-steering station systems.
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$ 32.92
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1-2 weeks delivery time The SeaStar HA5438 Hydraulic Steering Bottle Filler Kit makes it easy to bleed and purge your SeaStar hydraulic steering system. With this kit, you can pre-fill your helm, puncture the bottle, and start the bleeding process with minimal effort, using SeaStar fluid (HA5430H).
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$ 52.86
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1-2 weeks delivery time The SeaStar HA5445-2 Power Purge Junior is a portable hydraulic steering fill and purging system that dramatically reduces installation time by filling and purging in under 10 minutes. It ensures a consistent steering response by eliminating trapped air, and it is powered by a 12V battery. Weighing only 12 lbs, it’s highly portable and features quick-connect fittings for easy setup. It is compatible with BayStar and SeaStar hydraulic steering systems, with the option to add a Dual Cylinder Purging Kit for dual-cylinder systems.
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$ 3,168.70
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1-2 weeks delivery time The SeaStar HA5471-2 Liquid Alignment/Tiebar Valve is designed to realign two outboard motors or rudders connected by a tie-bar, eliminating the need for mechanical tie-bars. This valve helps remove air and realign the engines without the need to interrupt the hydraulic system.
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$ 976.74
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1-2 weeks delivery time The SeaStar HA5476 Round Bezel Kit is made specifically for the Baystar helm model HH4314-3, offering a reliable replacement with the correct fit and finish to keep the helm functioning properly.
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$ 184.99
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1-2 weeks delivery time The SeaStar HA5477 is a grounding strap for SeaStar front-mount cylinders in saltwater applications, protecting against corrosion caused by stray current. It is supplied with certain cylinders for added durability.
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$ 96.21
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1-2 weeks delivery time The Seastar HA5498 Optimus CAN1 Hub provides seamless connectivity between components within the Optimus control system, facilitating efficient integration. Its articlenumber is HA5498.
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$ 406.35
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1-2 weeks delivery time The SeaStar HA5731 hose kit contains two 18-inch hoses specifically designed for Capilano cylinders, providing necessary connections for hydraulic steering systems.
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$ 198.80
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1-2 weeks delivery time The SeaStar HA5820 Steering Cylinder Tiller Bushing Washer Kit is an essential component that helps maintain smooth operation and durability in your boat’s steering system.
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$ 126.27
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1-2 weeks delivery time The SeaStar HA6801 is a robust hardware kit designed for single engine, single cylinder applications. It’s built for high-performance setups, making it an ideal solution for tournament cylinders.
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$ 208.19
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1-2 weeks delivery time The SeaStar HA6802 is designed for twin engine, single cylinder applications. This heavy-duty kit includes a drive bracket and offers extreme performance for high-demand setups, especially in twin-engine configurations.
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$ 1,249.14
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1-2 weeks delivery time The SeaStar HA6804 hardware kit is designed for twin engine, dual cylinder applications. It’s built for heavy-duty performance and includes a front mount plate, ideal for extreme duty scenarios and high-performance multiple engine setups.
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$ 905.79
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1-2 weeks delivery time The SeaStar HA6806 is a hardware kit designed for triple engine, dual cylinder setups in SeaStar’s Tournament Series Cylinders. It includes front mount plates and is built for high-performance, multiple-engine applications.
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$ 1,592.86
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1-2 weeks delivery time The SeaStar HA6811 hardware kit is ideal for quad-engine, dual-cylinder applications, offering high-performance capabilities. It is also compatible with single-engine setups, providing versatility and durability for various boat configurations.
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$ 2,319.91
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1-2 weeks delivery time The SeaStar Handle Only for B80 Control (065007) is a replacement handle designed for the B80 control system. It ensures smooth and reliable operation, allowing for precise control over marine systems and providing long-lasting performance.
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$ 229.33
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1-2 weeks delivery time The SeaStar Handle Only for B80/S Control (065006) is a replacement handle designed for both the B80 and B80/S control systems. It offers reliable, precise control for marine applications, providing high-quality performance and durability in SeaStar systems.
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$ 98.33
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1-2 weeks delivery time The SeaStar HC4645-3 BayStar hydraulic cylinder is built for outboards up to 150HP with a 21" splash well width. It features 7.3 cubic inches displacement and 5.2 lock-to-lock turns, not recommended for high-speed boats exceeding 60 MPH.
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$ 593.23
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1-2 weeks delivery time The SeaStar HC4647-3 cylinder is designed for Honda outboards from 1998-2009 in the 115-130HP range. It provides reliable hydraulic steering with 7.3 cubic inches displacement and requires exclusive use with BayStar hydraulic components.
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$ 593.23
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How does a Seastar Hydraulic Steering system transmit steering input to a boat’s engine?
A hydraulic steering system transmits steering input through a steering kit where helm rotation pressurizes fluid that flows via a valve to the steering cylinder. In front mount or pro rear mount configurations, the cylinder converts this pressure into smooth engine movement, while seals and a seal kit ensure reliability according to system spec, supporting classic tilt, flush, and sport tilt helm designs.
How does a hydraulic cylinder translate steering input into engine movement on a boat?
A hydraulic cylinder translates steering input into engine movement by using pressurized fluid to push or pull the cylinder rod in response to helm rotation. Matched to the system ratio such as 1.7, this product delivers smooth, proportional force that turns the engine accurately, ensuring controlled and predictable steering on a boat.
How does a steering kit integrate the pump, hoses, and valve into one system?
A steering kit integrates the pump, hoses, and valve by forming a closed hydraulic loop that transfers steering input smoothly from the helm to the engine. Designed for pro front mount and sport configurations, the system ensures balanced fluid flow and precise response at sea, supporting advanced solutions such as optimus e-actuator concepts and sport plus performance standards demonstrated in technical video documentation.