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Mercury Outboard Parts
Shop OEM and aftermarket Mercury outboard parts for maintenance, repair, troubleshooting, and complete engine rebuild projects. Browse Mercury marine parts by system, including cooling, fuel delivery, electrical and ignition, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Mercury outboard engine parts for a wide range of 2-stroke, FourStroke, EFI, Optimax, Pro XS, SeaPro, and Verado applications. Use your engine horsepower, model, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Mercury Outboard Parts 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
Find the Correct Mercury Outboard Part
Mercury outboard parts can vary by horsepower, engine family, model year, and serial number range. If you are unsure which component fits your engine, use the OEM parts lookup to locate the original Mercury part number from an engine diagram.
Once you have the OEM part number, search Pro Marine to find available genuine Mercury and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Mercury Outboard Engine Families
Pro Marine supports many Mercury outboard applications across a wide horsepower range. Always confirm the engine serial number and model information before ordering parts.
- Portable and Midrange: Mercury 2.5HP through 60HP 2-stroke and FourStroke applications
- FourStroke and EFI: common 75HP through 300HP Mercury EFI and FourStroke platforms
- Pro XS: performance-oriented Mercury Pro XS outboards across multiple engine families
- Optimax: direct-injected 2-stroke Mercury Optimax engines, commonly 75HP through 250HP
- Verado: supercharged and naturally aspirated Mercury Verado applications from 135HP through current high-horsepower platforms
- SeaPro: commercial-duty Mercury SeaPro outboards used in professional and high-hour applications
Common Mercury Outboard Repair Areas
- Overheating: inspect the water pump, impeller, thermostat, poppet valve, cooling passages, and related cooling components.
- Hard starting or rough running: inspect fuel pumps, filters, injectors or carburetors, spark plugs, coils, sensors, and intake components.
- No spark or intermittent ignition: check ignition coils, stators, switch boxes, trigger assemblies, sensors, grounds, and wiring.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and internal engine components.
- Lower unit noise or water intrusion: inspect seals, bearings, gears, shafts, bearing carriers, and gear lube condition.
- Trim or steering problems: inspect trim motors, pumps, hydraulic components, steering cylinders, hoses, and related rigging parts.
Why Buy Mercury Outboard Parts from Pro Marine USA?
- OEM Mercury and aftermarket replacement options for many common applications.
- Parts for maintenance, repair, engine rebuilding, lower units, electrical systems, fuel systems, steering, trim, and rigging.
- OEM diagram and part-number lookup tools to help identify the correct part before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large inventory of Mercury service parts and hard-to-find marine engine components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Mercury outboard part?
Use the engine horsepower, model, serial number, and year whenever available. Mercury frequently uses serial-number ranges to identify engine families, so the serial number is often the most reliable way to confirm fitment.
Can I search Mercury parts by OEM part number?
Yes. Enter the Mercury OEM part number into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
Do Mercury outboard parts vary by serial number?
Yes. Many Mercury components change by serial-number range even within the same horsepower or model family. Always compare the serial range listed for the part with your engine before ordering.
Do you carry parts for Mercury Optimax and Verado engines?
Yes. Pro Marine carries parts for many Mercury Optimax, Verado, Pro XS, EFI, FourStroke, and SeaPro applications, including maintenance, fuel, electrical, cooling, internal engine, lower unit, steering, and rigging components.
Do you carry both OEM and aftermarket Mercury parts?
Yes. Pro Marine offers genuine Mercury parts along with aftermarket replacement parts for many common Mercury outboard maintenance, repair, and rebuild applications.
What Mercury outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Mercury outboard parts often vary by serial-number range. Confirm your engine serial number and OEM part number whenever possible before ordering.
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8M0214927
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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Genuine Mercury Marine Remote Control Power Trim Switch
Mercury 4000 Side Mount Trim Switch and Harness - 18286A43
Mercury Marine 18286A43 is the genuine OEM power trim and tilt switch with harness for compatible Mercury remote controls, including the 4000 Side Mount Power Trim control.
Mercury OEM 18286A43 replaces earlier switch/harness numbers 18286A26, 18286A2 and 16991A1.
Looking for an aftermarket option? Pro Marine also offers the Pro Marine 18286P Switch/Harness Assembly for the same application.
Part Type: Power Trim and Tilt Switch / Harness
Manufacturer: Mercury Marine
OEM or Aftermarket: Genuine OEM
Primary Application: Mercury 4000 Side Mount Power Trim Control
Control Application: 1994-Present
Manufacturer Item #: 18286A43
Replaces: 18286A26, 18286A2, 16991A1
Compatible Applications
Mercury OEM 18286A43 is listed in the supplied Mercury catalog fitment for the following remote-control and boat applications.
| Application | Years | Fitment Details |
|---|---|---|
| Mercury 4000 Side Mount Control | 1994-Present | Side Mount Remote Control with Power Trim |
| Mercury Amanzi 320 Hypalon RIB | 2004-2006 | Remote Control Components |
| Mercury Amanzi 380 Hypalon RIB | 2004-2006 | Remote Control Components |
This switch is identified primarily by the Mercury remote-control assembly, not by engine horsepower alone.
The supplied Mercury catalog application identifies 18286A43 with the 4000 Side Mount Power Trim control from 1994-Present.
Before ordering, verify your remote-control configuration and confirm that the original switch crosses to 18286A43, 18286A26, 18286A2 or 16991A1.
OEM and Cross Reference Numbers
Mercury has used several part numbers for this switch and harness assembly. 18286A43 is the current OEM number replacing the earlier Mercury numbers listed below.
| Brand | Part Number | Status |
|---|---|---|
| Mercury Marine OEM | 18286A43 | Current OEM Number |
| Mercury Marine OEM | 18286A26 | Previous Number |
| Mercury Marine OEM | 18286A2 | Previous Number |
| Mercury Marine OEM | 16991A1 | Previous Number |
Pro Marine Replacement Available
Pro Marine also offers an aftermarket replacement for customers looking for an alternative to the genuine Mercury assembly.
Choose between the genuine Mercury OEM 18286A43 and the Pro Marine 18286P aftermarket replacement.
View Pro Marine 18286P Switch/HarnessMercury OEM or Pro Marine?
| Option | Part Number | Brand |
|---|---|---|
| Genuine OEM | 18286A43 | Mercury Marine |
| Aftermarket | 18286P | Pro Marine |
What This Part is Used For
Mercury 18286A43 is installed in the compatible remote-control handle and allows the operator to control the engine's power trim and tilt system from the throttle/control handle.
The switch provides trim-up and trim-down control, while the attached harness connects the switch into the remote-control wiring.
This allows the operator to adjust engine trim while underway or raise and lower the engine as required without leaving the control handle.
Common Signs of a Worn Remote Trim Switch
The trim switch is repeatedly operated and exposed to the marine environment. Over time, the switch contacts, button or attached wiring can become worn or damaged.
- Trim works from the engine switch but not from the control handle
- Intermittent trim-up or trim-down operation
- One trim direction operates while the other does not
- The switch must be pressed repeatedly before the system responds
- Visible damage or wear to the trim switch
- Damaged, pinched or deteriorated switch wiring
A power trim system that does not operate from the throttle handle does not automatically indicate a failed trim motor or pump.
If the trim system works correctly from another switch but not from the remote-control handle, inspect the trim switch, switch harness, electrical connectors and related wiring as part of the diagnosis.
Installation and Replacement Tips
- Disconnect battery power before servicing the remote control.
- Confirm the existing switch part number before removal.
- Note the routing of the original harness before disassembly.
- Inspect connectors and control wiring for corrosion or damage.
- Route the new harness so it cannot become pinched during reassembly.
- Verify both trim-up and trim-down operation after installation.
- Follow Mercury service procedures for the specific remote control.
Key Features and Benefits
- Genuine Mercury Marine OEM component
- Mercury manufacturer item number 18286A43
- Power trim and tilt switch with attached harness
- Fits applicable Mercury 4000 Side Mount Power Trim controls
- Supplied catalog fitment lists the control from 1994-Present
- Replaces Mercury 18286A26
- Replaces Mercury 18286A2
- Replaces Mercury 16991A1
- Pro Marine aftermarket version also available
FAQ
What does Mercury 18286A43 fit?
The supplied Mercury catalog fitment lists 18286A43 for the
Mercury 4000 Side Mount Power Trim control from
1994-Present. It is also shown in the remote-control components
for the 2004-2006 Mercury Amanzi 320 and 380 Hypalon RIB applications.
What does Mercury 18286A43 replace?
Mercury 18286A43 replaces previous switch/harness numbers
18286A26, 18286A2 and 16991A1.
Does 18286A43 replace 18286A26?
Yes. 18286A26 is an earlier Mercury number superseded by
18286A43.
Does 18286A43 replace 18286A2?
Yes. 18286A2 is an earlier Mercury switch/harness
number in the replacement chain.
Does 18286A43 replace 16991A1?
Yes. 16991A1 is also an earlier Mercury number
associated with this switch/harness application.
Is this the switch in the throttle handle?
Yes. On the applicable Mercury remote control, this is the switch used
to operate power trim and tilt from the control handle.
Does the switch include the wiring harness?
Yes. This listing is for the switch and harness assembly.
Is this a genuine Mercury part?
Yes. This listing is for the
genuine Mercury Marine OEM 18286A43 switch/harness
assembly.
Do you carry an aftermarket version?
Yes. Pro Marine also offers the
Pro Marine 18286P Switch/Harness 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.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
18286A43, 87-18286A43, 18286A26, 87-18286A26, 18286A2, 87-18286A2, 16991A1, 87-16991A1
Searchable Terms
Mercury 18286A43, Mercury OEM trim switch, Mercury trim switch, Mercury tilt switch, Mercury power trim switch, Mercury remote control trim switch, Mercury switch harness, Mercury 4000 trim switch, Mercury 4000 side mount trim switch, Mercury throttle handle trim switch, Mercury control box trim switch, Mercury remote trim switch
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