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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
18286A2
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9737T9
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41460A2
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18-2254
18-2254
775512
8M0140445
850308