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Mercury Outboard Parts
Shop Mercury outboard motor parts by system, including cooling, fuel delivery, electrical, internal engine components, lower unit parts, and routine service items. Browse OEM and replacement Mercury marine parts to support maintenance, repair, and rebuild projects.
Shop by System
- Complete Powerheads
- Control Cables & Boxes
- Cooling System
- Cowlings & Components
- Electrical System
- Engine Oil
- Engine Rebuild Kits
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service & Oil Change Kits
- Service Manuals
- Steering Systems
- Throttle Components
- Transom & Midsection
- Trim System
- Wizard Performance Parts
Common Mercury Outboard Model References
This category supports many popular Mercury outboards across a wide horsepower range. Always confirm your model and serial number for best fitment.
- Portable & Midrange: 2.5HP–60HP (2-stroke & FourStroke)
- Performance: Pro XS and EFI platforms (75HP–300HP)
- Direct Injection: Optimax models (75HP–250HP)
- Premium Offshore: Verado models (135HP–400HP)
- Commercial: SeaPro models (commonly 75HP–300HP)
Always confirm your exact horsepower, model year, and serial number to ensure proper part compatibility before ordering.
516-44
840484
OEM Mercury Verado Steering Cylinder Seal Kit
Mercury Hydraulic Steering Cylinder Reseal Kit
This genuine OEM Mercury steering cylinder seal kit is used to reseal select Mercury Verado hydraulic steering cylinder assemblies.
The kit includes the seals and O-rings commonly required during steering cylinder repair and hydraulic steering system service.
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 & Supersessions
| Brand | Part Number |
|---|---|
| Mercury OEM | 8M0045604 |
| Supersedes Mercury OEM | 896173A01 |
| Alternate Search Format | 8M0045604 |
Related Steering Cylinder Seal
Need the steering cylinder attachment seal used when reinstalling the steering cylinder to the engine? See the Pro Marine Steering Cylinder Seal .
Aftermarket Alternative
Looking for an aftermarket replacement option? See the Pro Marine Steering Cylinder Seal Kit .
What This Steering Cylinder Seal Kit is Used For
This Mercury steering cylinder seal kit is used to reseal compatible Verado hydraulic steering cylinder assemblies.
The kit includes multiple hydraulic seals and O-rings commonly replaced during steering cylinder repair and hydraulic steering system service.
Worn or damaged steering cylinder seals may allow hydraulic fluid leakage, steering pressure loss, or reduced steering performance.
Replacing steering cylinder seals during service helps maintain proper hydraulic steering operation and reduce fluid leakage.
Key Features and Benefits
- Genuine OEM Mercury steering cylinder seal kit
- Current Mercury OEM part number 8M0045604
- Supersedes Mercury OEM seal kit 896173A01
- Fits select Mercury Verado hydraulic steering systems
- Includes seals and O-rings commonly needed for steering cylinder reseal service
- Helps maintain hydraulic steering pressure
- Helps reduce steering fluid leakage
- OEM Mercury fit and material compatibility
Steering Cylinder Seal Kit Details
- Brand: Mercury
- Part Type: Steering Cylinder Seal Kit
- Current OEM Part Number: 8M0045604
- Supersedes OEM: 896173A01
- Application: Mercury Verado Steering Cylinder Assemblies
- System: Hydraulic Steering System
- Use: Steering cylinder reseal service
- Quantity Sold: Kit
FAQ
What does Mercury 8M0045604 fit?
This seal kit fits select Mercury Verado hydraulic steering cylinder assemblies using compatible steering system components.
Does this replace Mercury 896173A01?
Yes. Mercury OEM part number 8M0045604 supersedes older seal kit number 896173A01.
What is included in this kit?
The kit includes the seals and O-rings commonly required to reseal compatible Verado steering cylinders.
Can bad steering seals cause fluid leaks?
Yes. Worn or damaged steering cylinder seals may allow hydraulic steering fluid leakage and steering performance issues.
Do I still need the steering cylinder attachment seal?
Depending on the repair being performed, you may also need the steering cylinder seal used when reinstalling the steering cylinder to the engine.
Is there an aftermarket version available?
Yes. Pro Marine also offers an aftermarket steering cylinder reseal kit for compatible Verado steering systems.
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
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8M0045604
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