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Replacement Hydraulic Steering Cylinder
Pro Marine 350-HSTEER-CYL Hydraulic Steering Cylinder
The Pro Marine 350-HSTEER-CYL Hydraulic Steering Cylinder is the replacement steering cylinder used with the Pro Marine 350-HSTEER hydraulic steering system. It is designed for high-horsepower single outboard setups where smooth, controlled steering response is critical.
This is the cylinder only. Helm pump, hoses, steering fluid, and fill/bleed accessories are sold separately unless purchased as part of the complete 350-HSTEER system.
What This Cylinder Is Used For
The steering cylinder converts hydraulic pressure from the helm pump into side-to-side movement at the outboard engine. It is the component that physically moves the engine when you turn the steering wheel.
If your current cylinder is leaking, damaged, binding, or worn, replacing it can restore proper steering control and improve the overall feel of the system.
Read our 350-HSTEER Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| 350-HSTEER Systems | Replacement hydraulic steering cylinder |
| Single Outboards up to 350HP | High-horsepower hydraulic steering applications |
| Bass Boats | Responsive steering and control at speed |
| Bay Boats | Smooth steering in shallow and open water |
| Center Consoles | Reliable steering feel for offshore and coastal use |
Build or Service Your Steering System
Complete Steering Kit
Need the full system instead of just the cylinder? The complete kit includes the cylinder, helm pump, hydraulic fluid, and fill hose assembly.
View 350-HSTEER Complete KitHelm Pump
Pair this cylinder with the matching Pro Marine helm pump for proper hydraulic steering operation.
View 350-HELM-025 Helm PumpHydraulic Hoses
Select the correct hydraulic hose length for your boat, jack plate, setback, and rigging route.
Shop Pro Marine Hydraulic HosesFluid & Fill Hose
Hydraulic fluid and a fill hose assembly help make installation and bleeding easier during service.
View PRO-OIL15 Hydraulic FluidView 102P Fill Hose Assembly
Complete Your Steering Setup
Need additional Pro Marine steering components?
Key Features and Benefits
- Replacement hydraulic steering cylinder for 350-HSTEER systems
- Designed for high-horsepower single outboard steering applications
- Helps restore smooth steering movement and control
- Front-mount hydraulic steering cylinder design
- Works with hydraulic helm, hose, and fluid circuit
- Good option for service, repair, or steering system rebuilds
System Function and Connections
- System Type: Hydraulic outboard steering
- Component Type: Steering cylinder
- Connection Type: Hydraulic hose connections to helm circuit
- Typical Use: Single outboard applications up to 350HP when used with the proper system
- Related Components: Helm pump, hydraulic hoses, steering fluid, fittings, and fill/bleed tools
FAQ
Is this the complete steering system?
No. This listing is for the hydraulic steering cylinder only. The complete
system is available as the Pro Marine 350-HSTEER kit.
What system does this cylinder work with?
This cylinder is designed for use with the Pro Marine 350-HSTEER hydraulic
steering system.
Are hydraulic hoses included?
No. Hydraulic hoses are sold separately so you can choose the correct length
for your boat and rigging layout.
When should I replace a steering cylinder?
Replace the cylinder if it is leaking, damaged, binding, corroded, or no
longer holding proper steering control.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
350-HSTEER-CYL, Pro Marine hydraulic steering cylinder, hydraulic steering cylinder, outboard steering cylinder, front mount steering cylinder, 350-HSTEER replacement cylinder, hydraulic steering repair, boat steering cylinder
Pro Series Hydraulic Steering Cylinder
Pro Marine 700HSTEER-CYL Hydraulic Steering Cylinder
The Pro Marine 700HSTEER-CYL Hydraulic Steering Cylinder is a Pro Series hydraulic steering ram designed for high-performance marine outboard steering applications.
This steering cylinder is designed for use with the Pro Marine 700HSTEER hydraulic steering system and helps deliver smooth, controlled steering response for demanding marine applications.
What a Hydraulic Steering Cylinder Does
The hydraulic steering cylinder is the component mounted at the outboard engine that physically turns the engine when hydraulic pressure is applied from the helm pump.
As the steering wheel is turned, hydraulic fluid moves through the steering hoses into the cylinder, extending or retracting the steering ram to control engine direction. Steering cylinder sizing and construction play a major role in steering feel, control, and system durability.
Read our Hydraulic Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| High-Performance Outboards | Pro Series hydraulic steering cylinder applications |
| Offshore Boats | Controlled hydraulic steering in demanding water conditions |
| Performance Setups | Responsive steering control for higher-speed operation |
| Repower Projects | Replacement hydraulic steering cylinder installations |
| Marine Repair Shops | Professional hydraulic steering service work |
Complete or Service Your Steering System
700HSTEER Steering System
Pair this cylinder with the complete Pro Marine 700HSTEER hydraulic steering system.
View 700HSTEER Steering SystemHydraulic Hoses
Select the proper hydraulic steering hose length for your boat layout, setback, and rigging route.
Shop Pro Marine Hydraulic HosesEnd Cap Kit
Service the steering cylinder using the compatible 700-ENDCAP replacement kit.
View 700-ENDCAPHydraulic Steering Fluid
Use quality hydraulic steering fluid during installation, filling, and bleeding procedures.
View PRO-OIL15 Hydraulic FluidKey Features and Benefits
- Pro Series hydraulic steering cylinder design
- Designed for the Pro Marine 700HSTEER system
- Helps provide smooth and controlled steering response
- Built for demanding marine steering applications
- Good choice for performance and offshore boats
- Compatible service parts available from Pro Marine
- Designed for hydraulic outboard steering systems
- Aftermarket Pro Marine steering component
System Function and Connections
- System Type: Hydraulic outboard steering
- Component Type: Hydraulic steering cylinder
- Part Number: 700HSTEER-CYL
- OEM or Aftermarket: Aftermarket
- Manufacturer: Pro Marine
- Connection Type: Hydraulic steering hose fittings
- Typical Use: High-performance marine steering systems
- Compatible System: Pro Marine 700HSTEER
- Related Components: Helm pumps, hydraulic hoses, fittings, steering fluid, and bleed kits
FAQ
What does the 700HSTEER-CYL steering cylinder do?
The steering cylinder converts hydraulic pressure into steering movement that turns the outboard engine.
What steering system is this cylinder designed for?
This cylinder is designed for the Pro Marine 700HSTEER hydraulic steering system.
Is this an OEM or aftermarket steering cylinder?
This product is listed as an aftermarket Pro Marine steering component.
Can this cylinder be serviced?
Yes. Compatible service components including the 700-ENDCAP kit are available for maintenance and repairs.
Is this cylinder suitable for performance boats?
Yes. The 700HSTEER-CYL is designed for demanding hydraulic steering applications including performance and offshore boats.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
700HSTEER-CYL, hydraulic steering cylinder, Pro Marine steering cylinder, Pro Series steering ram, outboard steering cylinder, marine hydraulic steering cylinder, offshore steering cylinder, performance steering ram, aftermarket steering cylinder, 700HSTEER cylinder