S2K Commerce - Products Dropdown
Actions
S2K Commerce - Order Entry
Actions
Pro Series Hydraulic Steering System
Pro Marine 700HSTEER Hydraulic Steering System
The Pro Marine 700HSTEER Hydraulic Steering System is a Pro Series aftermarket hydraulic steering kit designed for high-performance marine outboard steering applications.
This Pro Marine hydraulic steering system is listed as a complete kit and is designed to provide smooth, controlled steering response for demanding boat setups.
What a Pro Series Hydraulic Steering System Does
A hydraulic steering system uses a helm pump, hydraulic fluid, steering hoses, fittings, and a steering cylinder to turn the outboard engine. When the steering wheel is turned, hydraulic pressure moves fluid through the system and operates the cylinder at the engine.
The 700HSTEER Pro Series system is built for applications where stronger steering control, smooth handling, and reliable hydraulic response are important.
Read our Hydraulic Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| High-Performance Outboards | Pro Series hydraulic steering applications |
| Offshore Boats | Controlled hydraulic steering for demanding water conditions |
| Performance Setups | Responsive steering control for higher-speed operation |
| Repower Projects | Upgrade from cable steering or older hydraulic steering systems |
| Marine Repair Shops | Professional hydraulic steering replacement and installation work |
Complete or Service Your Steering System
Hydraulic Hoses
Choose the correct hydraulic steering hose length for your boat, jack plate, setback, and rigging route.
Shop Pro Marine Hydraulic HosesHydraulic Fluid
Use quality hydraulic steering fluid when filling and bleeding your hydraulic steering system.
View PRO-OIL15 Hydraulic FluidPro Series End Cap Kit
Service the 700-HSTEER-CYL steering cylinder with the correct replacement end cap kit.
View 700-ENDCAPHydraulic Steering Fittings
Use compatible Pro Marine hydraulic steering fittings when servicing or completing the steering system.
View HLO14BOS 90° FittingKey Features and Benefits
- Pro Series hydraulic steering system
- Listed as a complete aftermarket steering kit
- Designed for demanding marine outboard steering applications
- Helps provide smooth, controlled hydraulic steering response
- Good choice for performance boats, offshore boats, and repowers
- Helps reduce steering effort compared to cable steering
- Compatible service parts available from Pro Marine
- Oversized shipping item
System Function and Connections
- System Type: Pro Series hydraulic outboard steering
- Component Type: Complete hydraulic steering kit
- Part Number: 700HSTEER
- OEM or Aftermarket: Aftermarket
- Manufacturer: Pro Marine
- Connection Type: Hydraulic steering hose circuit
- Typical Use: High-performance marine outboard steering systems
- Related Components: Hydraulic hoses, steering fluid, fittings, cylinder service parts, and bleed tools
FAQ
What is the Pro Marine 700HSTEER system?
It is a Pro Series aftermarket hydraulic steering system listed as a complete kit for marine steering applications.
What type of steering system is this?
This is a hydraulic outboard steering system designed to use hydraulic pressure to operate the steering cylinder.
Is this an OEM or aftermarket steering system?
This product is listed as an aftermarket Pro Marine hydraulic steering system.
What parts are commonly serviced with this system?
Common related service parts include hydraulic hoses, steering fluid, fittings, bleed tools, and the 700-ENDCAP cylinder end cap kit.
Is this item oversized?
Yes. The product page lists this steering system as an oversized shipping item.
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, Pro Marine 700HSTEER, Pro Series hydraulic steering, hydraulic steering system, complete hydraulic steering kit, aftermarket steering system, outboard hydraulic steering, performance boat steering, offshore hydraulic steering, Pro Marine steering kit
Pro Marine Verado Steering Cylinder Seal
Hydraulic Steering Cylinder Seal for Mercury Verado Systems
This Pro Marine steering cylinder seal is an aftermarket replacement for select Mercury Verado hydraulic steering cylinder assemblies.
The seal helps maintain hydraulic steering pressure while supporting proper steering cylinder sealing and steering system performance.
Compatible Applications
| Engine Range | Engine Type | System | Application Notes |
|---|---|---|---|
| Mercury Verado 135-400HP | FourStroke | Hydraulic Steering | Used in compatible Mercury Verado steering cylinder assemblies |
| Mercury L6 Verado Models | Supercharged FourStroke | Hydraulic Steering | Used in compatible integrated steering systems |
| Mercury V8 / V10 Verado Models | FourStroke | Hydraulic Steering | Used in compatible Verado steering cylinder assemblies |
Always verify your Mercury model, serial number, and steering cylinder diagram before ordering hydraulic steering seals and components.
OEM Part Numbers & Cross References
| Brand / Type | Part Number |
|---|---|
| Pro Marine | 880667 |
| Replaces Mercury OEM | 8M0155530 |
| Replaces Mercury OEM | 880667 |
Complete Steering Cylinder Seal Kit Option
Need to reseal the complete Verado steering cylinder assembly? See the Pro Marine Steering Cylinder Seal Kit , which includes the additional seals commonly needed to reseal the entire Mercury Verado steering cylinder assembly.
What This Steering Cylinder Seal is Used For
This Pro Marine steering seal is used inside compatible Mercury Verado hydraulic steering cylinder assemblies.
The seal helps contain hydraulic steering fluid pressure while supporting proper steering cylinder operation and steering response.
A worn or damaged steering cylinder seal may allow hydraulic fluid leakage, steering pressure loss, or poor steering performance.
Replacing hydraulic steering seals during service helps maintain reliable steering system operation and reduce steering fluid leakage.
Key Features and Benefits
- Pro Marine aftermarket steering cylinder seal
- Replaces Mercury OEM part numbers 8M0155530 and 880667
- Fits select Mercury Verado hydraulic steering systems
- Helps maintain hydraulic steering pressure
- Helps reduce steering fluid leakage
- Designed for compatible Verado steering cylinder assemblies
- Common replacement during steering cylinder service
- Aftermarket alternative to OEM Mercury steering seals
Steering Cylinder Seal Details
- Brand: Pro Marine
- Part Type: Steering Cylinder Seal
- Replaces OEM: Mercury 8M0155530 and 880667
- Application: Mercury Verado Steering Cylinder Assemblies
- System: Hydraulic Steering System
- Use: Steering cylinder sealing
- Quantity Sold: Each
FAQ
What does this Pro Marine steering seal fit?
This seal fits select Mercury Verado hydraulic steering cylinder assemblies using compatible steering system components.
What Mercury part numbers does this replace?
This Pro Marine seal replaces Mercury OEM part numbers 8M0155530 and 880667.
What does this seal do?
It helps seal the hydraulic steering cylinder assembly to maintain steering fluid pressure and reduce leakage.
Can a bad steering seal cause fluid leaks?
Yes. A worn or damaged steering cylinder seal may allow hydraulic steering fluid leakage and steering performance issues.
Do I need additional seals during steering cylinder service?
In many cases, yes. Complete reseal service often requires multiple seals and O-rings throughout the steering cylinder assembly.
Is there a complete steering seal kit available?
Yes. Pro Marine offers a steering cylinder seal kit that includes the additional seals commonly needed to reseal the complete Verado steering cylinder assembly.
Should I verify fitment before ordering?
Yes. Mercury used multiple steering cylinder configurations depending on model and production range, so serial number verification is recommended.
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.
- Hydraulic steering components should be installed only after confirming correct fitment.
- 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
8M0155530, 880667, Pro Marine steering cylinder seal, Pro Marine Verado seal, Mercury steering cylinder seal, Mercury Verado steering seal, Mercury hydraulic steering seal, Verado cylinder seal, Verado steering ram seal, Mercury steering fluid seal, Mercury integrated steering seal, Mercury steering cylinder repair, Verado steering cylinder reseal
880667
702755022237
