SeaStar Pro Front Pivot Mount Outboard Cylinder — 8" Stroke, 8.34 cu.in. (HC63453)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Built for Speed. Engineered for Precision.
The SeaStar Pro Front Pivot Mount Outboard Cylinder (HC63453) is designed for high-performance, single-engine outboard boats that demand reliable, responsive steering at speed. With an 8" stroke and 8.34 cubic inch displacement, this cylinder delivers the solid, racking-free feel that performance boaters depend on — whether you're running flats, bass tournaments, or race/ski combos.
Key Features
- Keyed support brackets prevent cylinder racking for a more solid, precise steering feel
- Robust barrel construction with updated styling over previous models
- Advanced sealing system with excellent resistance to compression set
- Adjustable stainless steel O-ring fittings (ORB) for a secure, leak-free connection
- Rated for systems operating at 1500 psi
- Compatible with SeaStar Pro helm systems and reinforced Kevlar hoses only
Best For
High-speed, single-powered outboard boats — including Bass, Flats, Race/Ski combos, and other performance vessels capable of speeds exceeding 65 mph.
Parts Desk Insights
Best Use Case: The HC63453 is the cylinder of choice for performance outboard applications where steering precision at high speed is critical. It pairs exclusively with SeaStar Pro helm systems and 1500 psi Kevlar hoses — not compatible with standard SeaStar systems. Note: all cylinders ending in "3" have been updated and fit the same applications as their prior model equivalents.
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.