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OEM Mercury Verado Anode Kit
Mercury V10 Verado 350HP-425HP Corrosion Protection Kit
This genuine OEM Mercury anode kit helps protect compatible Mercury 5.7L V10 Verado 350HP-425HP outboards from galvanic corrosion.
The kit includes replacement trim anodes, power trim anodes, transom anode hardware, washers, and mounting screws for complete corrosion protection service.
Compatible Applications
| Engine Platform | Horsepower Range | Displacement | Application Notes |
|---|---|---|---|
| Mercury Verado V10 | 350HP-425HP | 5.7L FourStroke | Select Verado V10 outboards |
Regular inspection and replacement of worn anodes is recommended, especially for saltwater applications.
What is Included
| Qty | Included Component | Application |
|---|---|---|
| 2 | Trim Anodes | Outboard trim system protection |
| 2 | Power Trim Anodes | Hydraulic trim corrosion protection |
| 1 | Transom Anode | Transom assembly protection |
| Included | Washers & Mounting Screws | Anode installation hardware |
OEM Part Numbers & Cross References
| Brand | Part Number |
|---|---|
| Mercury OEM | 8M0207809 |
What This Anode Kit is Used For
This Mercury anode kit is used to help protect compatible Verado V10 outboards from galvanic corrosion caused by exposure to water, electrical currents, and dissimilar metals.
Sacrificial anodes help absorb corrosive activity before it can damage expensive outboard components such as the gearcase, trim system, mounting bracket, and transom components.
The included trim and power trim anodes are commonly replaced during routine maintenance or whenever excessive anode wear is present.
Mercury anodes are engineered to meet or exceed MIL-A-24779(SH) military specifications for long-lasting corrosion protection performance.
Key Features and Benefits
- Genuine OEM Mercury corrosion protection anode kit
- Fits Mercury 5.7L V10 Verado 350HP-425HP outboards
- Includes trim anodes, power trim anodes, and transom anode
- Includes washers and mounting screws
- Helps protect against galvanic corrosion
- Designed for freshwater and saltwater use
- Meets or exceeds MIL-A-24779(SH) specifications
- OEM Mercury fit and corrosion protection compatibility
Anode Kit Details
- Brand: Mercury Marine
- Part Type: Anode Kit / Corrosion Protection Kit
- OEM Part Number: 8M0207809
- Application: Mercury Verado V10 FourStroke
- Horsepower Range: 350HP-425HP
- Displacement: 5.7L V10
- Water Type: Freshwater & Saltwater Compatible
- System: Corrosion Protection / Trim System
FAQ
What engines does this anode kit fit?
This kit fits compatible Mercury 5.7L V10 Verado 350HP-425HP FourStroke outboards.
What is included in this anode kit?
The kit includes two trim anodes, two power trim anodes, one transom anode, washers, and mounting screws.
Can this anode kit be used in saltwater?
Yes. Mercury states this kit is designed for both freshwater and saltwater applications.
Why are anodes important?
Sacrificial anodes help protect expensive metal outboard components from galvanic corrosion and electrolysis.
How often should anodes be replaced?
Anodes should be inspected regularly and replaced whenever excessive wear or deterioration is present.
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
8M0207809, Mercury anode kit, Mercury Verado anode kit, Mercury 350HP Verado anodes, Mercury 400R anodes, Mercury 425HP Verado anodes, Mercury V10 corrosion kit, Mercury power trim anodes, Mercury transom anode, Mercury sacrificial anodes, Mercury corrosion protection kit, Mercury V10 trim anodes
Pro Marine Forward Gear Roller Bearing for Mercury V6 Gearcases
The Pro Marine 549281P Forward Gear Roller Bearing is an aftermarket replacement for Mercury OEM number 549281. It fits select Mercury and Mariner V6 outboard gearcases, including standard-rotation, SportMaster, TorqueMaster, Pro Max, Super Mag, Magnum, XR and Jet applications.
Forward Gear Roller Bearing
This roller bearing supports the forward gear inside the outboard lower unit. It allows the gear to rotate smoothly while supporting the radial loads created by the gearset and propeller shaft.
Pro Marine item: 549281P
Mercury OEM number: 549281
Part type: Forward gear roller bearing
Location: Gear housing and propeller-shaft assembly
Why Choose the Pro Marine Replacement?
A Pro Marine replacement bearing supplied for professional marine lower-unit service and repair.
Replaces Mercury roller-bearing part number 549281 in the listed gearcase applications.
Fits select standard, SportMaster, TorqueMaster, Pro Max, Super Mag and related V6 gearcases.
Suitable for lower-unit rebuilding when inspection confirms the forward gear bearing requires replacement.
Provides an economical alternative for customers who do not require a genuine Mercury-branded bearing.
Pro Marine USA can assist with identifying the correct bearing using your engine serial number and gearcase type.
OEM & Cross Reference Numbers
| Brand | Part Number | Description |
|---|---|---|
| Pro Marine | 549281P | Aftermarket forward gear roller bearing |
| Mercury Marine | 549281 | OEM roller bearing |
Mercury and Mariner Fitment Overview
This bearing was used in several different Mercury and Mariner V6 lower-unit designs. General application groups are shown below, followed by detailed serial-number fitment.
| Engine Family | Common Gearcase Applications |
|---|---|
| 105 and 140 Jet | Select propeller-shaft gear housings and standard-rotation gearcases |
| 135-200HP V6 | Standard, Magnum, XR, XRI, Marathon, Work and offshore gearcases |
| 150-200HP Performance | Pro Max, Super Mag, SportMaster and TorqueMaster applications |
| 200HP XS | Select 2.5L six-cylinder standard, SportMaster and TorqueMaster gearcases |
| 225 and 225X EFI | Select Pro Max and Super Mag SportMaster and TorqueMaster gearcases |
| 2.5L Offshore and Racing | Select offshore, ROS and high-performance gear-housing assemblies |
Important Fitment Note
Mercury used multiple propeller-shaft gearcases, bearing arrangements, gear ratios and serial-number breaks within the same horsepower family.
Do not order this bearing based only on horsepower. Verify that the Mercury parts diagram for your complete engine serial number specifies bearing 549281.
Grouped Mercury Serial-Number Fitment
Applications sharing the same or closely related serial ranges are grouped together to make the fitment information easier to search and review.
| Engine Models | Serial Number Range | Gearcase / Catalog Notes |
|---|---|---|
| 2.5L Offshore | 0G857000 through 0T999519 | Standard-rotation propeller-shaft gear housing |
| 2.5L Offshore | 0G610239 through 0G856999 | Standard and SportMaster gear housing |
| V135, V150, V175 and V200 | 0C239553 through 0D081999 | Standard propeller-shaft gear housing |
| XR4, Magnum II | 0C239553 through 0D081999 | Standard V6 gear housing |
| V150 XR2, V150, V150 Magnum, Marathon, Work and V1500 | 4868998 or 5600162 through 0A904645 | Gear housing with driveshaft nut |
| V175 Magnum, V175 XRI and V200 XRI | 0D000750 or 0C291520 through 0D081999 | 1.87:1 and 2.0:1 propeller-shaft gear housings |
| 105 Jet, 140 Jet, V135, V150, XR6, Magnum III, V175 and V200 | 0D082000 through 0G303045 | Propeller-shaft gear housing |
| 105 Jet, 140 Jet, V135, V150, XR6, Magnum III, V175 and V200 | 0G303046 through 0G760299 | Standard prop-shaft gear housing; selected applications below serial 0G437999 |
| V150 HP, V175 SKI, V175 Magnum, V175 XRI and V200 XRI | 0D082000 through 0G303045 | 1.87:1 or 2:1 prop-shaft gear housing |
| V150 HP, V175 HP and V200 | 0G303046 through 0G760299 | Standard-rotation prop-shaft gearcase; selected applications below 0G437999 |
| 150 and 200 HP Pro Max / Super Mag | 0D935000 through 0G610049 or 0G610079 | Standard, SportMaster, TorqueMaster and CLE gearcases |
| 150 and 200 HP Pro Max / Super Mag | 0G610050 through 0G856999 | Canadian standard and SportMaster applications |
| 200 EFI Pro Max / Super Mag | 0G857000 through 0G858150 | Belgium SportMaster and TorqueMaster gearcases |
| 225 EFI Pro Max / Super Mag | 0G857000 through 0T429939 | Standard, SportMaster and TorqueMaster applications |
| 225 EFI Pro Max / Super Mag | 0G610104 through 0G856999 | Selected USA production applications |
| 200 HP XS 2.5L six-cylinder | 0T235000 through 0T818180 | SportMaster and TorqueMaster gearcases |
| 200 HP XS 2.5L six-cylinder | 0T818181 through 1E000796 | Standard, SportMaster and TorqueMaster gearcases |
| 200 HP XS 2.5L six-cylinder | 1E000797 through 1E002110 | Standard, SportMaster and TorqueMaster gearcases |
| 225X EFI Pro Max | 0T430254 through 0T819605 | SportMaster and TorqueMaster applications |
| V175 | 4301235 through 0C100860 or 8058870 through 0B384939 | 2:1 gear ratio with 14-tooth pinion gear; USA and Australian production |
Some ranges above include more than one gearcase design. Verify the gear-housing diagram and confirm that bearing 549281 appears in the parts list for your exact engine serial number.
What This Bearing Is Used For
The forward gear bearing supports the forward gear and helps maintain proper alignment between the gear, pinion and propeller shaft inside the lower unit.
A worn or damaged bearing may contribute to gearcase noise, excessive metal contamination, rough gear rotation, improper gear alignment or damage to the forward gear and related lower-unit components.
Lower-unit bearing replacement requires complete disassembly, inspection and correct setup of bearing preload, gear backlash and shim thickness. This repair should be performed using the applicable Mercury service procedures and proper specialty tools.
Frequently Asked Questions
Is this a Pro Marine product?
Yes. Item 549281P is a Pro Marine-branded aftermarket forward gear roller bearing.
Does it replace Mercury 549281?
Yes. Pro Marine 549281P is an aftermarket replacement for Mercury OEM roller bearing 549281.
Where is this bearing installed?
It is installed in the lower-unit gear housing and supports the forward gear in the propeller-shaft assembly.
Does it fit every Mercury 135-225HP V6?
No. Mercury used several different gearcase and bearing arrangements. Confirm OEM number 549281 using the complete engine serial number and gear-housing diagram.
Does it fit SportMaster and TorqueMaster gearcases?
It fits the specifically listed SportMaster and TorqueMaster applications that call for Mercury bearing 549281.
Can this bearing be replaced without resetting the gearcase?
Bearing replacement normally requires lower-unit disassembly, inspection and proper gearcase setup. Follow the correct Mercury service procedure for the exact gearcase.
The Pro Marine Advantage
Pro Marine supplies marine repair professionals, dealerships and boat owners with replacement lower-unit components for Mercury, Yamaha, Suzuki, Johnson, Evinrude and other leading marine brands.
Pro Marine replacement parts are selected to provide dependable fitment, practical value and reliable service for professional and do-it-yourself marine repairs.
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 in the 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 are accepted within 30 days of delivery.
- Parts must be new, unused and in their original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help confirming fitment or have an order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers & Applications
Pro Marine 549281P, 549281P, 549281, Mercury forward gear bearing, Mercury roller bearing, Mercury lower unit bearing, Mercury V6 gearcase bearing, Mercury SportMaster bearing, Mercury TorqueMaster bearing, Mercury Pro Max gearcase bearing, Mercury Super Mag bearing, Mercury 105 Jet bearing, Mercury 140 Jet bearing, Mercury V135 bearing, Mercury V150 bearing, Mercury V175 bearing, Mercury V200 bearing, Mercury 200 XS bearing, Mercury 225 Pro Max bearing, Mercury 225X bearing, Mariner forward gear bearing
Tecno Seal Aluminum Anode Kit for Mercury L6 Verado
Mercury L6 Verado 350HP-400HP Aluminum Anode Kit
The Tecno Seal 20817 aluminum anode kit is designed for compatible Mercury L6 Verado 350HP-400HP outboards. This kit helps protect submerged metal components from the harmful effects of galvanic corrosion.
Tecno Seal is a reputable marine anode manufacturer known for producing quality corrosion protection components for Mercury and other major marine applications.
Compatible Applications
| Brand | Horsepower Range | Engine Family | Application Notes |
|---|---|---|---|
| Mercury | 350HP-400HP | Inline 6-Cylinder Verado | Compatible high horsepower L6 Verado outboards |
This aluminum anode kit is intended for compatible Mercury L6 Verado 350HP-400HP outboards and helps protect gearcase, transom, and other exposed metal components from galvanic corrosion.
Inspect anodes annually and replace them when they show heavy corrosion, pitting, or significant material loss.
This 20817 anode kit is for Mercury L6 Verado 350HP-400HP models. If you have a Mercury L6 Verado 200HP-300HP model, use the VER6 anode kit linked below.
What is Included
| Included Component | Application |
|---|---|
| Aluminum Anode Set | Replacement corrosion protection for compatible L6 Verado models |
| Transom / Bracket Anodes | Corrosion protection for exposed bracket and transom components |
| Gearcase Anodes | Corrosion protection for lower unit and gearcase components |
| Installation Hardware | Anode replacement installation |
Other L6 Verado Anode Kit
Mercury L6 Verado 200HP-300HP Anode Kit
Tecno Seal aluminum anode kit for Mercury inline 6-cylinder Verado 200HP-300HP models.
View ProductComplete Your Service
Mercury L6 Verado Service Kits
Shop Mercury L6 Verado 100 hour service kits for compatible 200HP-400HP Verado outboards, including options with and without oil.
View 100 Hour Kits
Mercury L6 Verado 300 Hour Kits
Shop Mercury L6 Verado 300 hour service kits for major scheduled maintenance on compatible inline 6-cylinder Verado outboards.
View 300 Hour KitsWhat This Anode Kit is Used For
The Tecno Seal 20817 aluminum anode kit is used to replace worn or corroded sacrificial anodes on compatible Mercury L6 Verado 350HP-400HP outboards.
Sacrificial anodes help protect the gearcase, transom bracket, and other submerged metal components from galvanic corrosion caused by electrical activity in freshwater or saltwater environments.
Periodic anode inspection and replacement is an important part of routine outboard maintenance, especially for boats operated in saltwater or stored in the water for extended periods.
Aluminum anodes are commonly used for modern marine applications because they provide strong corrosion protection in both freshwater and saltwater.
Key Features and Benefits
- Tecno Seal aluminum anode kit for Mercury L6 Verado outboards
- Fits Mercury inline 6-cylinder 350HP-400HP Verado models
- Helps protect gearcase, transom, and exposed metal components
- Helps protect against galvanic corrosion
- Designed for fast inspection and replacement
- Aluminum construction for freshwater and saltwater use
- Includes installation hardware
- Supports annual corrosion protection maintenance
- Quality replacement option from a reputable anode manufacturer
Anode Kit Details
- Part Number: 20817
- Brand: Tecno Seal
- Material: Aluminum
- Water Type: Freshwater & Saltwater
- Engine Compatibility: Mercury Inline 6-Cylinder Verado
- Horsepower Range: 350HP-400HP
- Installation Hardware: Included
- Service Area: Transom, bracket, and gearcase anodes
FAQ
What engines does this 20817 anode kit fit?
This kit fits compatible Mercury inline 6-cylinder Verado 350HP-400HP outboards.
Is this the correct anode kit for Mercury L6 Verado 200HP-300HP models?
No. Mercury L6 Verado 200HP-300HP models use the VER6 anode kit, linked above.
Who makes this anode kit?
This 20817 anode kit is made by Tecno Seal, a reputable manufacturer of marine
sacrificial anodes and corrosion protection products.
Can aluminum anodes be used in saltwater?
Yes. Aluminum anodes are commonly used in both freshwater and saltwater
applications.
How often should I inspect my anodes?
Inspect anodes at least annually and replace them when they show heavy
corrosion, pitting, or significant material loss.
Does this kit include installation hardware?
Yes. Installation hardware is included for anode replacement.
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.
- Installed or used corrosion protection components may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
20817, Mercury L6 Verado 350HP anode kit, Mercury L6 Verado 400HP anode kit, Mercury inline 6 Verado anode kit, Mercury 350HP Verado anodes, Mercury 400HP Verado anodes, Mercury aluminum anode kit, Tecno Seal 20817, Tecnoseal 20817, Mercury transom anodes, Mercury gearcase anodes, Mercury L6 Verado service kits, Mercury L6 Verado 100 hour kit, Mercury L6 Verado 300 hour kit, Mercury corrosion protection kit, VER6, Mercury L6 Verado 200HP-300HP anode kit
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