{"product_id":"seastar-hc4645-3-baystar-outboard-hydraulic-steering-cylinder-up-to-150hp","title":"SeaStar HC4645-3 BayStar Outboard Hydraulic Steering Cylinder, Up to 150HP","description":"\u003cp\u003eThe SeaStar HC4645-3 BayStar Outboard Cylinder is a compact hydraulic steering cylinder built to upgrade an outboard steering system from mechanical to hydraulic control. Its compact form is designed for smaller outboards up to 150HP and is sized to fit most splashwells, making it a straightforward upgrade path for boats currently running mechanical steering. The cylinder features a precision-manufactured, balanced design and is built under rigid ISO quality control standards for consistent performance. Installation is designed to be easy, letting owners move to hydraulic steering without extensive modification to the transom or splashwell area. With an 8 inch actuation stroke length, a maximum pressure rating of 1000 psi, and a fluid displacement of 7.25 cubic inches, the HC4645-3 is engineered to deliver smooth, controlled steering response at the helm. The cylinder uses a 0.63 inch shaft diameter and is rated for use with SeaStar Steering Fluid. Overall dimensions are 4.60 inches in height, 5.19 inches in depth, and 21 inches in width, with a total weight of 7.06 pounds. This cylinder is intended for outboard applications rated up to 150HP where a compact, splashwell-mounted hydraulic cylinder is required.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e SeaStar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e HC4645-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Rating:\u003c\/strong\u003e 150 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActuation Stroke Length:\u003c\/strong\u003e 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Pressure Rating:\u003c\/strong\u003e 1000 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid Displacement:\u003c\/strong\u003e 7.25 cubic inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Diameter:\u003c\/strong\u003e 0.63 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllowable Fluid Type:\u003c\/strong\u003e SeaStar Steering Fluid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.60 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 5.19 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 21 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 7.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 731957932013\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOutboards up to 150 HP\u003c\/li\u003e\n\u003cli\u003eFits most splashwells\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the SeaStar HC4645-3 do?\u003c\/strong\u003e The SeaStar HC4645-3 BayStar Outboard Cylinder is a hydraulic steering cylinder that lets you upgrade an outboard steering system from mechanical to hydraulic control.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the HC4645-3 fit my outboard?\u003c\/strong\u003e This cylinder has a compact design made for smaller outboards up to 150HP and is sized to fit most splashwells.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum pressure rating of this cylinder?\u003c\/strong\u003e The HC4645-3 BayStar Outboard Cylinder has a maximum pressure rating of 1000 psi.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is the actuation stroke?\u003c\/strong\u003e The HC4645-3 has an actuation stroke length of 8 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat hydraulic fluid should be used with this cylinder?\u003c\/strong\u003e The SeaStar HC4645-3 is rated for use with SeaStar Steering Fluid.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the HC4645-3 cylinder?\u003c\/strong\u003e The HC4645-3 measures 4.60 inches in height, 5.19 inches in depth, and 21 inches in width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the HC4645-3 weigh?\u003c\/strong\u003e The SeaStar HC4645-3 BayStar Outboard Cylinder weighs 7.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shaft diameter on this cylinder?\u003c\/strong\u003e The HC4645-3 has a shaft diameter of 0.63 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the SeaStar HC4645-3 easy to install?\u003c\/strong\u003e Yes, the HC4645-3 BayStar Outboard Cylinder is designed to be easy to install.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the fluid displacement of the HC4645-3?\u003c\/strong\u003e The HC4645-3 has a fluid displacement of 7.25 cubic inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the HC4645-3 quality controlled?\u003c\/strong\u003e The HC4645-3 is built under rigid ISO quality control with precision manufacturing for a balanced cylinder.\u003c\/p\u003e","brand":"SeaStar Solutions","offers":[{"title":"Default Title","offer_id":49028231594203,"sku":"TEL-HC4645-3","price":616.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/TEL-HC4645-3__42147.1722517940.500.750.jpg?v=1785165422","url":"https:\/\/www.goodvibesmarina.com\/products\/seastar-hc4645-3-baystar-outboard-hydraulic-steering-cylinder-up-to-150hp","provider":"Good Vibes Marina","version":"1.0","type":"link"}