SeaStar HC5328-3 Sterndrive Hydraulic Steering Cylinder — 8" Stroke, 8.3 cu. in.
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You have 30 days to request a return. All sale items are final sale.
SeaStar HC5328-3 Sterndrive Hydraulic Steering Cylinder
The SeaStar HC5328-3 is a heavy-duty hydraulic steering cylinder engineered for sterndrive applications. With an 8-inch stroke and 8.3 cubic inch displacement, it delivers precise, responsive steering feel across a wide range of boat sizes and engine configurations.
This cylinder is compatible with both single and dual-drive setups and supports multiple helm stations, making it a versatile choice for centre console, dual-console, and express cruiser builds where a second steering position is required.
An integrated autopilot interface port simplifies connection to compatible autopilot systems — no additional fittings or adapters required for most installations.
Key Specifications
- Model: HC5328-3
- Application: Sterndrive
- Stroke: 8 inches
- Displacement: 8.3 cubic inches
- Compatible Reference: BA125-8EM
- Seal Kit: HS5154 (sold separately)
- Drive Compatibility: Single and dual sterndrive
- Helm Stations: Single and dual station compatible
- Autopilot Interface: Yes
- Weight: 2.38 kg (5.25 lbs)
Best Use Cases
- Sterndrive boats requiring a full-travel hydraulic cylinder with dual-station capability
- Repowering or upgrading an existing hydraulic steering system on a sterndrive vessel
- Installations where autopilot integration is planned or already in place
In the Box
- HC5328-3 Hydraulic Steering Cylinder
Note: The HS5154 seal kit is recommended as a service item and is available separately. Always follow the manufacturer's installation guide and consult a qualified marine technician for installation.
Parts Desk Insights
This cylinder is best suited for sterndrive repowers and full hydraulic steering system upgrades where dual-station or autopilot compatibility is a priority. The HS5154 seal kit should be stocked alongside this unit for customers performing a full service or rebuild. Confirm the customer's existing helm pump displacement and hose routing before ordering — cylinder displacement must be matched to the helm for proper lock-to-lock turns. If the customer is running a dual-station setup, verify that the second helm pump is also rated for this cylinder's displacement.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.