SeaStar Solutions
SeaStar Pro HC6345-3 Front Mount Outboard Cylinder (Mercury XS)
The SeaStar Pro HC6345-3 front mount outboard cylinder is built for high-speed, single-engine boats capable of more than 65 MPH. In SeaStar's application guide it's specified for Mercury XS outboards from 115 to 300 HP (2003 to present). Installation requires…
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Pro series front mount cylinder for high-speed boats over 65 MPH
Specified for single Mercury XS outboards, 115–300 HP
8.34 cu. in. volume
Works with all SeaStar helms
Required
SeaStar high-strength tiller bolt HA5822
Sold Separately
SeaStar helm, hoses and hydraulic steering fluid
| Dimensions | Volume: 8.34 cu. in. |
| Compatibility | From SeaStar's official front mount cylinder application guide. Single engine: Mercury 2003–present, 115–300 HP XS (requires high-strength tiller bolt HA5822) Twin Mercury XS installations must use SeaStar Tournament cylinders. |
| Installation | Front mount. Requires SeaStar high-strength tiller bolt HA5822. Professional installation recommended. |
| Vendor | SeaStar Solutions |
| SKU | S5RHC63453 |
| Availability | In Stock |
SeaStar specifies it for single Mercury XS outboards from 115 to 300 HP on high-speed boats.
Do I need anything else to install it?
Yes. SeaStar requires its high-strength tiller bolt HA5822 for this installation. You'll also need a helm, hoses and SeaStar steering fluid.
Can I use it on twin Mercury XS engines?
No. SeaStar requires Tournament cylinders for twin Mercury XS setups. See our SeaStar Tournament 2 cylinder.
Not sure this is the right cylinder?
Our team will confirm compatibility before you order. Click Speak with an Expert or email support@tidalstandard.com.
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