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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.
76865
8M0226861
8M2009865
823903
Pro Marine Mercury Remote Control Power Trim Switch
Mercury 4000 Side Mount Trim Switch and Harness - 18286P
Pro Marine 18286P is an aftermarket replacement power trim and tilt switch with harness for compatible Mercury remote controls, including the 4000 Side Mount Power Trim control.
This switch replaces Mercury OEM part number 18286A43 and previous Mercury numbers 18286A26, 18286A2 and 16991A1.
Pro Marine also stocks the genuine Mercury OEM 18286A43 Switch/Harness Assembly for customers who prefer the factory Mercury version.
Part Type: Power Trim and Tilt Switch / Harness
Manufacturer: Pro Marine
OEM or Aftermarket: Aftermarket
Primary Application: Mercury 4000 Side Mount Power Trim Control
Control Application: 1994-Present
Replaces OEM #: 18286A43
Pro Marine Item #: 18286P
Compatible Applications
Pro Marine 18286P replaces the trim switch and harness used in the following applications identified in the supplied Mercury catalog fitment.
| 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 selected by the Mercury remote-control configuration, not simply by engine horsepower or model.
The supplied Mercury application information identifies this switch with the 4000 Side Mount Power Trim control from 1994-Present.
Before ordering, inspect your remote control 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. Current OEM number 18286A43 supersedes the earlier numbers listed below.
| Brand / Type | Part Number | Status |
|---|---|---|
| Pro Marine | 18286P | Aftermarket Replacement |
| Mercury OEM | 18286A43 | Current OEM Number |
| Mercury OEM | 18286A26 | Superseded |
| Mercury OEM | 18286A2 | Superseded |
| Mercury OEM | 16991A1 | Superseded |
Mercury OEM Version Available
Prefer the genuine factory component? Pro Marine also stocks Mercury Marine OEM 18286A43 for the same switch application.
Choose between the Pro Marine 18286P aftermarket replacement and the genuine Mercury OEM 18286A43.
View Mercury OEM Switch/HarnessWhat This Part is Used For
This switch is installed in a compatible Mercury remote-control handle and allows the operator to control the engine's power trim and tilt system directly from the throttle/control handle.
Pressing the switch in one direction commands the trim/tilt system upward, while pressing it in the opposite direction commands the system downward. The attached harness connects the switch to the remote-control wiring.
This lets the operator adjust engine trim while underway or raise and lower the engine as required without moving away from the control handle.
Common Signs of a Worn Trim Switch
A remote-control trim switch is exposed to repeated use and the marine environment. Over time, the switch or attached wiring can become worn or damaged.
Symptoms that may indicate the switch or harness needs inspection include:
- Trim operates from the engine-mounted switch but not from the control handle
- Intermittent trim-up or trim-down operation
- Switch must be pressed repeatedly before the trim responds
- One direction works while the other does not
- Visible damage to the switch button
- Damaged, pinched or deteriorated switch wiring
A trim system that does not operate from the remote-control handle does not automatically mean the trim pump or motor has failed.
If the engine trims correctly from another trim switch but not from the control handle, inspect the remote trim switch, harness, connectors and related wiring as part of the diagnosis.
Replacement Tips
- Disconnect battery power before servicing the remote control.
- Confirm the original switch part number whenever possible.
- Note the routing of the existing switch harness before removal.
- Inspect the remote-control wiring and connectors for corrosion or damage.
- Avoid pinching the replacement harness when reassembling the control.
- Verify both trim-up and trim-down operation after installation.
- Follow Mercury service procedures for the specific remote control.
Key Features and Benefits
- Pro Marine aftermarket power trim and tilt switch
- Switch and attached harness assembly
- Pro Marine item number 18286P
- Replacement for Mercury OEM 18286A43
- Replaces Mercury 18286A26
- Replaces Mercury 18286A2
- Replaces Mercury 16991A1
- Fits the applicable Mercury 4000 Side Mount Power Trim control
- Supplied fitment lists the 4000 Side Mount control from 1994-Present
- Mercury OEM version also available from Pro Marine
FAQ
What does Pro Marine 18286P replace?
18286P replaces Mercury switch/harness assembly
18286A43 and previous Mercury numbers
18286A26, 18286A2 and 16991A1.
Is this a power trim and tilt switch?
Yes. This is the remote-control switch used to operate the engine's
power trim and tilt system from the compatible Mercury control handle.
Does 18286A43 replace 18286A26?
Yes. Mercury 18286A43 is the current OEM replacement
for superseded 18286A26.
Does 18286A43 replace 18286A2 and 16991A1?
Yes. Both 18286A2 and 16991A1 are earlier Mercury
switch/harness numbers superseded by 18286A43.
Does this fit the Mercury 4000 Side Mount control?
Yes. The supplied Mercury fitment identifies this switch with the
4000 Side Mount Power Trim control from 1994-Present.
Does this fit by engine horsepower?
This part is primarily identified by the remote-control
assembly, rather than engine horsepower alone. Verify the
control style and original switch number before ordering.
Does the switch include the harness?
Yes. 18286P is a switch and harness assembly.
Do you carry the genuine Mercury version?
Yes. Pro Marine also stocks the
Mercury OEM 18286A43 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
18286P, 18286A43, 87-18286A43, 18286A26, 87-18286A26, 18286A2, 87-18286A2, 16991A1, 87-16991A1
Searchable Terms
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, Mercury 18286A43 replacement, Pro Marine Mercury trim switch
18286A2
18286A26
18286A43
8M0153723
OEM Mercury Gearcase Drain Plug Seal Washer
Mercury Drain Plug Seal 8M0204693 Replaces 830749
The Mercury 8M0204693 drain plug seal is a genuine OEM Mercury sealing washer used on many Mercury and Mariner outboards, Mercury Racing lower units, Verado gearcases, and MerCruiser sterndrives.
This seal replaces Mercury part number 830749 and is commonly used on lower unit drain screws, vent screws, and gear lube fill plugs to help prevent gearcase lubricant leaks during operation and storage.
Common Compatible Applications
| Application Family | Common Models | Use Location | OEM References |
|---|---|---|---|
| Mercury & Mariner Outboards | EFI, DFI, Optimax, FourStroke, SeaPro, Pro XS | Gearcase Drain & Fill Screws | 8M0204693, 830749 |
| Mercury Verado | L4, L6, V6 & V8 Verado Models | Lower Unit Drain & Vent Screws | 8M0204693, 830749 |
| Mercury Racing | 150R, 200R, 250R, 300R, 450R, 500R | SportMaster & Racing Gearcases | 8M0204693, 830749 |
| Mercury Racing Gearcases | SportMaster, TorqueMaster, HD Lower Units | Drain & Fill Screw Seal | 8M0204693, 830749 |
| MerCruiser Sterndrives | Alpha, Bravo, Blackhawk, NXT | Gear Lube Drain & Vent Screws | 8M0204693, 830749 |
| MerCruiser Performance Drives | M-Series, Zeus, Vazer | Gearcase Drain Plug Seal | 8M0204693, 830749 |
Mercury uses this drain plug sealing washer across a very large number of outboard lower units, Verado gearcases, Racing gearcases, and MerCruiser sterndrive applications.
The best way to confirm fitment is by matching your original seal or OEM part number.
Common OEM references include: 8M0204693 and 830749.
OEM Part Numbers & Cross References
| Brand | Part Number |
|---|---|
| Mercury | 8M0204693 |
| Mercury | 830749 |
What This Drain Plug Seal is Used For
The Mercury 8M0204693 seal washer is used during lower unit and sterndrive gear lube service to help seal drain screws and vent screws against lubricant leaks.
Replacing the seal washer during gear lube service helps maintain proper sealing pressure and helps reduce the risk of water intrusion into the gearcase.
Mercury recommends replacing drain plug seals during routine lower unit service and gear lube changes.
Key Features and Benefits
- Genuine OEM Mercury drain plug seal washer
- Replaces Mercury part number 830749
- Fits many Mercury outboards and MerCruiser sterndrives
- Fits Verado, Pro XS, Racing, FourStroke, and Optimax applications
- Fits many SportMaster and TorqueMaster gearcases
- Commonly used during lower unit gear lube service
- Helps prevent gear lube leaks and water intrusion
- Used on drain screws, vent screws, and fill plugs
- Designed for harsh marine environments
Part Details
- Part Number: 8M0204693
- Supersedes: 830749
- Product Type: Drain Plug Seal Washer
- Brand: Mercury Marine
- Application: Mercury Outboards & MerCruiser Drives
- Use Location: Lower Unit Drain, Fill & Vent Screws
- OEM Mercury Part: Yes
FAQ
What does Mercury 8M0204693 replace?
This drain plug seal replaces Mercury part number 830749.
What is this seal used for?
It seals lower unit drain screws, vent screws, and gear lube fill plugs
on Mercury outboards and MerCruiser sterndrives.
Does this fit Mercury Racing lower units?
Yes. This seal is commonly used on Mercury Racing SportMaster,
TorqueMaster, and HD lower units including 300R, 450R, and 500R applications.
Does this fit MerCruiser sterndrives?
Yes. This seal is used on many Alpha, Bravo, Blackhawk, NXT, Zeus,
and M-Series sterndrives.
Should drain plug seals be replaced during service?
Yes. Mercury recommends replacing drain plug seals during routine
gear lube service to help prevent leaks and water intrusion.
Is this a genuine Mercury part?
Yes. This is a genuine OEM Mercury Marine drain plug sealing washer.
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 seals and washers 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 Terms
8M0204693, 830749, Mercury drain plug seal, Mercury drain screw washer, Mercury gearcase washer, Mercury lower unit seal, Mercury gear lube washer, Mercury vent screw seal, Mercury drain plug gasket, Verado drain plug seal, Mercury Pro XS drain seal, Mercury Racing drain washer, Mercury 500R drain plug seal, Mercury 450R drain plug washer, SportMaster drain plug seal, TorqueMaster washer, Mercury Bravo drain washer, Mercury Alpha drain washer, MerCruiser drain plug seal, MerCruiser Bravo washer, MerCruiser Alpha washer, Mercury gearcase drain seal, Mercury lower unit washer, Mercury fill screw seal, Mercury OEM washer
18-2430-9
18-24301-9
8M0204693
830749
Mercury Shock Rod Kit 8M0168235
The Mercury 8M0168235 Shock Rod Kit is an OEM replacement kit used in the power trim system on select Mercury outboards. This updated kit is designed for newer trim assemblies and helps maintain smooth, controlled engine movement during trim operation.
Fitment Overview
This shock rod kit fits select Mercury 105HP Jet, 135HP, and 150HP FourStroke outboards using the newer power trim assembly design for serial numbers 2B752836 and up. If your engine falls in the earlier serial range, Mercury used a different shock rod assembly.
Compatibility
| Engine Model | Horsepower | Serial Range |
|---|---|---|
| Mercury Jet | 105 HP | 2B752836 and Up |
| Mercury FourStroke | 135 HP | 2B752836 and Up |
| Mercury FourStroke | 150 HP | 2B752836 and Up |
| Mercury FourStroke | 150 HP Pro XS | 3B020121 and Up |
Fits These Serial Ranges
Confirmed application: Mercury 105HP Jet, 135HP, and 150HP models using the updated power trim assembly design for serial numbers 2B752836 and newer.
Important: This kit is for engines after the serial break. If your engine is
serial number 2B752836 and below, order the earlier shock rod assembly instead:
Mercury Shock Rod Assembly 8M0060145 for 2B752836 and Below
Part Numbers and Cross References
| Type | Part Number |
|---|---|
| Mercury OEM | 8M0168235 |
| Application | Shock Rod Kit |
| System | Power Trim Assembly |
What This Part Is Used For
This shock rod kit is used inside the power trim assembly to support smooth engine movement and proper trim operation. It helps control internal motion within the trim system and reduces stress on surrounding trim components.
- Used in Mercury power trim assemblies
- Supports smooth trim and tilt operation
- Helps control internal movement of trim components
- Designed for the updated trim assembly version
If you are servicing the trim system on a compatible Mercury outboard, this kit helps restore proper function and reliable trim performance.
System Function and Connections
- System Type: Hydraulic power trim
- Location: Inside the power trim assembly
- Related Components: Trim pump, pistons, cylinders, and bracket components
FAQ
What does Mercury 8M0168235 fit?
It fits Mercury 105HP Jet, 135HP, and 150HP outboards using the newer power trim assembly for serial numbers 2B752836 and up.
How do I know if I need this kit or the earlier version?
Check your engine serial number. If your engine is 2B752836 and up, this is the correct kit. If it is 2B752836 and below, you need the earlier 8M0060145 shock rod assembly.
Is this part used in the steering system?
No. This is a power trim assembly component.
Why does the serial number break matter?
Mercury updated the trim assembly design, so different shock rod parts are used before and after the 2B752836 serial break.
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 Part Numbers
8M0168235, Mercury shock rod kit, Mercury 105HP Jet shock rod kit, Mercury 135HP shock rod kit, Mercury 150HP shock rod kit, Mercury trim assembly 2B752836 and up, 150hp ProXS 3C020121 and Up
8M0153722
18-6773
8M0031551
828708
828708
828708T
878265A1
878265A4
878405A1
878407A1
9-18204
881857500
4406A2