Description
DOMETIC SEASTAR Side Mount Outboard Cylinder – HC5370-3
The Dometic SeaStar HC5370-3 is a side-mount outboard hydraulic steering cylinder for installations where a front-mount cylinder is not suitable. It is commonly used in shallow splashwells and on engines fitted with power steering, with an unbalanced cylinder design that produces different steering turns port and starboard.
Main Features
- Side-mount cylinder alternative to front-mount outboard steering cylinders.
- Suitable for shallow splashwell installations and engines fitted with power steering.
- Dometic lists 8 in. actuation stroke, 1500 psi maximum pressure, and ORB ports.
- Supplier data identifies 4.8 / 5.7 turns lock-to-lock for the unbalanced cylinder design.
- Not for use with SeaStar Pro helms according to supplier application notes.
Product Specifications
- Manufacturer Part Number: HC5370-3
- Cylinder Type: Outboard side mount
- Stroke: 8 in. / 203 mm
- Shaft Diameter: 0.5 in.
- Maximum Pressure: 1500 psi
- Port Type: ORB
- Fluid Volume: 8.30 oz listed by Dometic
- Turns Lock-to-Lock: Approx. 4.8 / 5.7 depending on direction

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