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858000Q01
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Complete Hydraulic Steering System
Pro Marine 350-HSTEER Hydraulic Steering System
Built for single outboard boats up to 350HP, the Pro Marine 350-HSTEER system delivers smooth steering response, better control, and reliable performance for modern high-horsepower outboards.
Includes: steering cylinder, helm pump,
2 bottles of hydraulic fluid, and fill hose assembly.
Hydraulic hoses sold separately so you can choose the
correct hose length for your boat and rigging layout.
What Is Included
Steering Cylinder
Front-mount hydraulic steering cylinder built for high-horsepower outboard control and smooth steering response.
View 350-HSTEER-CYLHelm Pump
Hydraulic helm pump that converts steering wheel input into hydraulic steering movement.
View 350-HELM-025Fill Hose Assembly
Makes filling and bleeding the hydraulic steering system easier during installation and service.
View 102P Fill HoseRead our 350-HSTEER Steering Comparison & Pro Tips Guide
Best Applications
| Boat / Setup | Why It Works Well |
|---|---|
| Single Outboards up to 350HP | Built for modern high-horsepower steering loads |
| Bass Boats | Responsive steering feel and better control at speed |
| Bay Boats | Smooth handling in shallow and open water |
| Center Consoles | Reliable steering control for offshore and coastal use |
| Repowers | Excellent upgrade from traditional cable steering |
Complete Your Steering Setup
Need hoses or replacement steering components?
Key Benefits
- Designed for single outboards up to 350HP
- Smooth hydraulic steering response
- Reduced steering effort compared to cable systems
- Improves handling and control at higher speeds
- Excellent for bass boats, bay boats, and center consoles
- Flexible hose routing for cleaner rigging installations
FAQ
Does this steering system include hoses?
No. Hydraulic hoses are sold separately so you can choose the
correct hose length for your setup.
What horsepower is this system rated for?
The 350-HSTEER system is designed for single outboard applications up to 350HP.
What comes in the kit?
The kit includes the steering cylinder, helm pump,
two bottles of hydraulic steering fluid, and fill hose assembly.
What boats is this system commonly used on?
It is commonly used on bass boats, bay boats,
center consoles, repower projects, and performance outboard setups.
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, Pro Marine hydraulic steering system, hydraulic steering kit, hydraulic steering up to 350HP, outboard steering system, bass boat hydraulic steering, bay boat steering system, offshore hydraulic steering, steering helm and cylinder kit
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
25cc Hydraulic Steering Helm Pump
Pro Marine 350-HELM-025 Hydraulic Helm Pump
The Pro Marine 350-HELM-025 Hydraulic Helm Pump is a 25cc hydraulic steering helm designed for smooth, controlled steering response on modern outboard boats.
This helm is compatible with many standard hydraulic steering systems, including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
What a Hydraulic Helm Pump Does
The helm pump is the core component of a hydraulic steering system. When the steering wheel is turned, the helm creates hydraulic pressure that moves fluid through the hoses and steering cylinder to turn the engine.
A properly matched helm pump helps provide predictable steering feel, reduced steering effort, and smooth handling at both low and high speeds.
Read our Hydraulic Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| Single Outboards up to 350HP | Hydraulic steering helm applications |
| Bass Boats | Performance steering and responsive handling |
| Bay Boats | Smooth low-speed and cruising control |
| Center Consoles | Reliable offshore and coastal steering feel |
| Repower Projects | Excellent upgrade from traditional cable steering |
Complete or Service Your Steering System
Complete Steering Kit
Need the full steering package? The 350-HSTEER kit includes the helm, cylinder, fluid, and fill hose assembly.
View 350-HSTEER Complete KitSteering Cylinder
This helm works with many standard hydraulic steering cylinders, including Pro Marine, SeaStar®, and Uflex® compatible systems.
View 350-HSTEER-CYL CylinderHydraulic Hoses
Select the proper hydraulic hose length for your boat, jack plate, setback, and rigging route.
Shop Pro Marine Hydraulic HosesFluid & Fill Accessories
Hydraulic fluid and fill hose assemblies help simplify installation and steering system bleeding.
View PRO-OIL15 Hydraulic FluidView 102P Fill Hose Assembly
Key Features and Benefits
- 25cc hydraulic helm pump design
- Compatible with many standard hydraulic steering systems
- Works with Pro Marine, SeaStar®, and Uflex® style setups
- Smooth steering response and controlled handling
- Designed for high-horsepower single outboards
- Helps reduce steering effort compared to cable steering
- Good option for bass boats, bay boats, and offshore applications
System Function and Connections
- System Type: Hydraulic outboard steering
- Component Type: Hydraulic helm pump
- Helm Size: 25cc
- Connection Type: Hydraulic steering hose circuit
- Typical Use: Single outboard hydraulic steering systems
- Compatible Systems: Pro Marine, SeaStar®, Uflex®, and similar front-mount hydraulic steering systems
- Related Components: Steering cylinder, hydraulic hoses, steering fluid, fittings, and fill/bleed kit
FAQ
What does a hydraulic helm pump do?
The helm pump converts steering wheel movement into hydraulic pressure that moves the steering cylinder.
What size is this helm?
This is a 25cc hydraulic helm pump.
What steering systems is this helm compatible with?
It is compatible with many standard hydraulic steering systems including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
Is this the complete steering system?
No. This listing is for the helm pump only.
Can I buy the complete steering kit instead?
Yes. The complete 350-HSTEER kit includes the helm pump, steering cylinder, fluid, and fill hose assembly.
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-HELM-025, hydraulic helm pump, 25cc helm, SeaStar compatible helm, Uflex compatible helm, Pro Marine helm pump, hydraulic steering helm, outboard steering helm, front mount hydraulic steering
37cc Hydraulic Steering Helm Pump
Pro Marine 350-HELM-037 Hydraulic Helm Pump
The Pro Marine 350-HELM-037 Hydraulic Helm Pump is a 37cc hydraulic steering helm designed for smooth, responsive steering control on high-horsepower outboard boats.
This Pro Marine helm is designed for the 350-HSTEER system and is compatible with many standard hydraulic steering systems, including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
What a 37cc Helm Pump Does
The helm pump creates the hydraulic pressure that moves fluid through the steering hoses and into the steering cylinder. When you turn the wheel, the helm controls how much fluid is moved through the system, which directly affects steering feel and wheel turns lock-to-lock.
A 37cc helm moves more fluid per steering wheel turn than smaller 25cc or 30cc helms, which can create quicker steering response and fewer turns lock-to-lock when matched with the correct hydraulic steering cylinder.
Read our Hydraulic Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| Single Outboards up to 350HP | Hydraulic steering helm applications requiring quicker response |
| Bass Boats | Performance steering feel and reduced wheel turns |
| Bay Boats | Responsive control for shallow-water and open-water use |
| Center Consoles | Controlled steering feel for coastal and offshore running |
| Performance Setups | Useful where faster steering response is preferred |
Complete or Service Your Steering System
Complete Steering Kit
Need a complete hydraulic steering package? The 350-HSTEER kit includes the steering cylinder, helm pump, hydraulic fluid, and fill hose assembly.
View 350-HSTEER Complete KitSteering Cylinder
Pair this helm with a compatible hydraulic steering cylinder for proper system operation and steering response.
View 350-HSTEER-CYL CylinderHydraulic Hoses
Choose the correct hose length for your boat, jack plate, setback, and rigging route.
Shop Pro Marine Hydraulic HosesFluid & Fill Accessories
Hydraulic steering fluid and fill hose assemblies help simplify installation, filling, and bleeding.
View PRO-OIL15 Hydraulic FluidView 102P Fill Hose Assembly
Key Features and Benefits
- 37cc hydraulic helm pump design
- 2.25 cubic inches per revolution hydraulic displacement
- Moves more fluid per wheel turn than 25cc and 30cc helms
- Can provide quicker steering response when properly matched
- Designed for the Pro Marine 350-HSTEER hydraulic steering system
- Compatible with many standard hydraulic steering systems
- Works with Pro Marine, SeaStar®, and Uflex® style setups
- Good choice for performance boats and high-horsepower outboards
- Helps reduce steering effort compared to cable steering
System Function and Connections
- System Type: Hydraulic outboard steering
- Component Type: Hydraulic helm pump
- Helm Size: 37cc
- Displacement: 2.25 cu in/rev
- Connection Type: Hydraulic steering hose circuit
- Typical Use: Single outboard hydraulic steering systems
- Compatible Systems: Pro Marine 350-HSTEER, SeaStar®, Uflex®, and similar front-mount hydraulic steering systems
- Related Components: Steering cylinder, hydraulic hoses, steering fluid, fittings, and fill/bleed kit
FAQ
What does a 37cc hydraulic helm pump do?
It converts steering wheel movement into hydraulic pressure and moves fluid through the steering system to turn the outboard.
What is the difference between a 30cc and 37cc helm?
A 37cc helm moves more fluid per wheel turn than a 30cc helm, which can reduce turns lock-to-lock and create a quicker steering feel when matched correctly.
What steering systems is this helm compatible with?
It is designed for the Pro Marine 350-HSTEER system and is compatible with many standard hydraulic steering systems including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
Is this the complete steering system?
No. This listing is for the helm pump only.
Should I choose the 30cc or 37cc helm?
Choose based on your steering cylinder, boat setup, and desired steering feel. The 37cc helm is generally the more responsive option.
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-HELM-037, hydraulic helm pump, 37cc helm pump, Pro Marine 37cc helm, 2.25 cu in helm pump, SeaStar compatible helm, Uflex compatible helm, hydraulic steering helm, outboard steering helm, performance steering helm, 350-HSTEER helm pump
37cc Hydraulic Steering Helm Pump
Pro Marine 350-HELM-037 Hydraulic Helm Pump
The Pro Marine 350-HELM-037 Hydraulic Helm Pump is a 37cc hydraulic steering helm designed for smooth, responsive steering control on high-horsepower outboard boats.
This Pro Marine helm is designed for the 350-HSTEER system and is compatible with many standard hydraulic steering systems, including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
What a 37cc Helm Pump Does
The helm pump creates the hydraulic pressure that moves fluid through the steering hoses and into the steering cylinder. When you turn the wheel, the helm controls how much fluid is moved through the system, which directly affects steering feel and wheel turns lock-to-lock.
A 37cc helm moves more fluid per steering wheel turn than smaller 25cc or 30cc helms, which can create quicker steering response and fewer turns lock-to-lock when matched with the correct hydraulic steering cylinder.
Read our Hydraulic Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| Single Outboards up to 350HP | Hydraulic steering helm applications requiring quicker response |
| Bass Boats | Performance steering feel and reduced wheel turns |
| Bay Boats | Responsive control for shallow-water and open-water use |
| Center Consoles | Controlled steering feel for coastal and offshore running |
| Performance Setups | Useful where faster steering response is preferred |
Complete or Service Your Steering System
Complete Steering Kit
Need a complete hydraulic steering package? The 350-HSTEER kit includes the steering cylinder, helm pump, hydraulic fluid, and fill hose assembly.
View 350-HSTEER Complete KitSteering Cylinder
Pair this helm with a compatible hydraulic steering cylinder for proper system operation and steering response.
View 350-HSTEER-CYL CylinderHydraulic Hoses
Choose the correct hose length for your boat, jack plate, setback, and rigging route.
Shop Pro Marine Hydraulic HosesFluid & Fill Accessories
Hydraulic steering fluid and fill hose assemblies help simplify installation, filling, and bleeding.
View PRO-OIL15 Hydraulic FluidView 102P Fill Hose Assembly
Key Features and Benefits
- 37cc hydraulic helm pump design
- 2.25 cubic inches per revolution hydraulic displacement
- Moves more fluid per wheel turn than 25cc and 30cc helms
- Can provide quicker steering response when properly matched
- Designed for the Pro Marine 350-HSTEER hydraulic steering system
- Compatible with many standard hydraulic steering systems
- Works with Pro Marine, SeaStar®, and Uflex® style setups
- Good choice for performance boats and high-horsepower outboards
- Helps reduce steering effort compared to cable steering
System Function and Connections
- System Type: Hydraulic outboard steering
- Component Type: Hydraulic helm pump
- Helm Size: 37cc
- Displacement: 2.25 cu in/rev
- Connection Type: Hydraulic steering hose circuit
- Typical Use: Single outboard hydraulic steering systems
- Compatible Systems: Pro Marine 350-HSTEER, SeaStar®, Uflex®, and similar front-mount hydraulic steering systems
- Related Components: Steering cylinder, hydraulic hoses, steering fluid, fittings, and fill/bleed kit
FAQ
What does a 37cc hydraulic helm pump do?
It converts steering wheel movement into hydraulic pressure and moves fluid through the steering system to turn the outboard.
What is the difference between a 30cc and 37cc helm?
A 37cc helm moves more fluid per wheel turn than a 30cc helm, which can reduce turns lock-to-lock and create a quicker steering feel when matched correctly.
What steering systems is this helm compatible with?
It is designed for the Pro Marine 350-HSTEER system and is compatible with many standard hydraulic steering systems including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
Is this the complete steering system?
No. This listing is for the helm pump only.
Should I choose the 30cc or 37cc helm?
Choose based on your steering cylinder, boat setup, and desired steering feel. The 37cc helm is generally the more responsive option.
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-HELM-037, hydraulic helm pump, 37cc helm pump, Pro Marine 37cc helm, 2.25 cu in helm pump, SeaStar compatible helm, Uflex compatible helm, hydraulic steering helm, outboard steering helm, performance steering helm, 350-HSTEER helm pump