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Hydraulic Steering Cylinders

      Hydraulic Steering Cylinders Product Listings

      • Seastar HS5157 Cylinder Seal Kit
        $226.79
        $188.99

        Seastar HS5157 Cylinder Seal Kit The Seastar HS5157 seal kit is an aftermarket replacement front seal kit for SeaStar pivot/front mount cylinders. Includes: Seal Glands Qty 2 Pin Wrench Seal Gland Assembly Guide Tools

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      • SeaStar Inboard Hydraulic Steering Cylinders
        $827.41
        $732.99

        SeaStar Inboard Hydraulic Steering Cylinders These Cylinders are for single and dual rudder vessels with two axis articulation and easy autopilot interface. Cylinders are also supplied with bleeder fittings.  Features: Regular duty aluminum...

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      • SeaStar HC5345-3 Outboard Steering Cylinder
        $1,069.19
        $890.99

        SeaStar HC5345-3 Outboard Steering Cylinder This SeaStar HC5345-3 outboard hydraulic cylinder features an upgrade to the barrel, sealing system and fittings. The robust barrel and new graphics complement the styling on new boats and motors. The new...

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      • Sierra HC4645-3 BayStar Outboard Cylinder
        $740.39
        $616.99

        SeaStar HC4645-3 BayStar Outboard Cylinder The SeaStar HC4645-3 BayStar outboard cylinder is an easy and affordable way to upgrade your steering system from mechanical to hydraulic. It's compact form is made for smaller outboards up to 150HP and is able...

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      • UFlex UC95-OBF/1 Front Mount Hydraulic Cylinder
        $805.19
        $603.89

        UFlex UC95-OBF/1 Front Mount Hydraulic Cylinder This front mount hydraulic cylinder is recommended for use with outboard engines 175HP total. Featuring a high resistance stainless steel connection bolt and replaceable cylinder end caps for a long...

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      • Uflex UC128TS-2 Front Mount Hydraulic Cylinder
        $1,112.79
        $834.59

        Uflex UC128TS-2 Front Mount Hydraulic Cylinder This Uflex front mount hydraulic cylinder is designed for easy installation and fits most 2/4 stroke outboard engines on the market. Uflex's ULTRABOLT is a stainless steel connection bolt that boasts...

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      • CLEARANCE
        Uflex UC128OBF-1 Front Mount Hydraulic Cylinder
        $1,112.79
        $834.59

        Uflex UC128TS-1 Front Mount Hydraulic Cylinder This Uflex front mount hydraulic cylinder is designed for easy installation and fits most 2/4 stroke outboard engines on the market. Uflex's ULTRABOLT is a stainless steel connection bolt that boasts...

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      • CLEARANCE
        Uflex UC128OBF-3 Front Mount Hydraulic Cylinder
        $1,112.79
        $812.39

        Uflex UC128TS-3 Front Mount Hydraulic Cylinder This Uflex front mount hydraulic cylinder is designed for easy installation and fits most 2/4 stroke outboard engines on the market. Uflex's ULTRABOLT is a stainless steel connection bolt that boasts...

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      Hydraulic Steering Cylinders

      Your boat's hydraulic steering cylinder is the critical component that translates helm input into smooth, responsive motion. Whether you're operating a center console fishing boat, pontoon, or twin-engine offshore vessel, the right cylinder ensures precise control, reduced steering effort, and long-term reliability in all conditions.

      At Wholesale Marine, we carry a complete selection of SeaStar, Dometic, and Uflex hydraulic steering cylinders engineered for both single and multiple engine configurations. Each model is corrosion-resistant, easy to install, and built to perform under high torque and demanding marine environments.

      Choosing the Right Hydraulic Steering Cylinder

      Selecting the proper cylinder depends on your engine setup and steering configuration:

      • Front-Mount Outboard Cylinders - Compact and versatile, these are the most common style for single and dual outboards up to 600 HP combined.
      • Side-Mount Cylinders - Ideal when space is limited or for boats requiring specific clearance around the transom area.
      • Inboard Cylinders - Designed for direct rudder control on inboard and sterndrive setups.
      • Jackplate & Tilt Cylinders - Offer custom fitment for performance boats and twin or triple outboard systems.

      When upgrading your system, always ensure compatibility between your helm pump, hose kit, and steering cylinder. For help matching components, visit our Hydraulic Boat Steering page or call our marine specialists at (877) 388-2628.

      Premium Brands You Can Trust

      We proudly stock marine-grade hydraulic cylinders from trusted names:

      • SeaStar Solutions (formerly Teleflex): Industry-standard quality, easy to bleed, and designed for high-performance control.
      • Uflex Marine: Innovative, lightweight, and engineered for precision.
      • Dometic Marine: Heavy-duty corrosion resistance for offshore and commercial vessels.

      Each brand meets or exceeds A.B.Y.C. and N.M.M.A. standards, ensuring smooth operation and lasting reliability.

      Maintenance and Troubleshooting

      Hydraulic cylinders require minimal maintenance, but regular inspection keeps your system safe and efficient:

      • Check for hydraulic fluid leaks around the rod and seals.
      • Inspect fittings for corrosion and retighten as needed.
      • Bleed air from the system annually for consistent response.

      If your steering feels spongy or unresponsive, it may be time to replace or rebuild your hydraulic cylinder. For more guidance, read out Troubleshooting Common Boat Steering Issues guide.

      Complete Your System

      Shop complementary components to complete your hydraulic setup:

      Enjoy fast shipping, expert support, and the confidence that comes with buying from Wholesale Marine.

      Frequently Asked Questions About Hydraulic Steering Cylinders

      What does a hydraulic steering cylinder do?

      It transfers pressure from the helm pump to move your outboard, sterndrive, or rudder - providing smooth, responsive steering control.

      How do I know which hydraulic cylinder fits my boat?

      Match your cylinder to your engine manufacturer and configuration (single, dual, or triple outboard). Reference your helm model for compatibility.

      How often should hydraulic cylinders be serviced?

      Inspect at least once per season for leaks, corrosion, or seal wear. Replace seals or rebuild units as needed.

      Can I replace a hydraulic cylinder myself?

      Yes, most experienced boaters can install one with standard tools. Just be sure to bleed the system thoroughly to remove trapped air.

      Do SeaStar and Dometic cylinders fit older Teleflex systems?

      Yes, SeaStar Solutions (formerly Teleflex) hydraulic cylinders are fully compatible with most existing Teleflex and Dometic systems.