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Outboard Motor Parts | OEM & Aftermarket
Shop OEM and aftermarket outboard motor parts for Mercury, Yamaha, Suzuki, Honda, Johnson / Evinrude / E-TEC, Tohatsu / Nissan, and Chrysler / Force engines. Pro Marine USA carries parts for routine maintenance, troubleshooting, repair, and complete marine engine rebuilds.
Browse by outboard manufacturer or engine system, or use our OEM parts lookup to identify the correct part number before ordering. Find cooling, fuel, ignition, electrical, internal engine, lower unit, steering, trim, service kit, gasket, seal, and rebuild parts in one place.
Shop Outboard Parts by Manufacturer
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair 
Honda Outboard Honda cooling, fuel, electrical, and engine parts 
Johnson / Evinrude / E-TEC Outboard Johnson, Evinrude, E-TEC, and OMC replacement parts 
Mercury Outboard Mercury and Mariner maintenance, repair, and rebuild parts 
Suzuki Outboard Suzuki service, lower unit, fuel, and engine parts 
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts 
Yamaha Outboard Yamaha maintenance, repair, lower unit, and rebuild parts Find the Correct Outboard Part
Not sure which part fits your engine? Start with the engine manufacturer, horsepower, model number, serial number, and year whenever available.
Our OEM parts lookup lets you view factory parts diagrams and identify the original part number for many popular outboard engines. Once you have the OEM number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Shop Outboard Parts by Engine System
Outboard engines use several interconnected systems. Select your manufacturer above to browse the exact categories available for your engine, including the following common repair and maintenance areas.
Common Outboard Problems and Where to Start
- Engine overheating: inspect the water pump, impeller, thermostat, pressure-control components, cooling passages, and engine anodes.
- Hard starting or rough idle: check fuel delivery, carburetor or injector operation, spark plugs, ignition components, filters, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes or ignition modules, sensors, wiring, grounds, and related electrical components.
- Low compression or poor power: inspect pistons, rings, cylinder condition, head and powerhead gaskets, bearings, and other internal engine components.
- Milky gear lube: inspect prop shaft, driveshaft, shift shaft, bearing carrier, and other lower unit seals for water intrusion.
- Lower unit or gearcase noise: inspect bearings, gears, clutch components, shafts, and gear lube condition before continued operation.
- Trim or steering problems: inspect hydraulic fluid level, seals, hoses, trim motors, pumps, steering cylinders, and mechanical connections.
Why Buy Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for major outboard engine brands.
- Marine engine parts for routine maintenance, professional repair, and complete rebuild projects.
- OEM diagram and part-number lookup tools to help identify the correct component before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large selection of service kits, engine parts, lower unit components, fuel system parts, electrical parts, steering, and rigging products.
- Same-day weekday shipping available on qualifying in-stock orders placed before the shipping cutoff.
OEM and Aftermarket Outboard Parts
OEM parts are supplied by the original engine manufacturer and are designed for the specific engine application. Aftermarket parts are replacement components produced by independent marine parts manufacturers and may provide additional availability or value for many common repairs.
Pro Marine carries both genuine OEM parts and quality aftermarket replacement parts for many outboard maintenance, repair, and rebuild applications. Always confirm fitment using the engine model, serial number, horsepower, year range, or OEM part number when available.
Frequently Asked Questions
How do I find the correct parts for my outboard motor?
Start by identifying the engine manufacturer, horsepower, model number, serial number, and year. Select the manufacturer above to browse by engine system, or use the OEM parts lookup to locate the original part number from a factory diagram.
Can I search Pro Marine by OEM part number?
Yes. If you already have the OEM part number, enter it 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.
What information should I have before ordering an outboard part?
Have the engine manufacturer, horsepower, model number, serial number, and year whenever possible. An OEM part number from the original component or parts diagram is especially helpful because visually similar parts may fit different engine families.
What is the difference between OEM and aftermarket outboard parts?
OEM parts come from the original engine manufacturer. Aftermarket parts are replacement components manufactured by other marine parts companies for compatible applications. Pro Marine carries both OEM and aftermarket options across many common outboard engine systems.
Are aftermarket outboard motor parts reliable?
Quality aftermarket marine parts are commonly used for maintenance, professional repair, and engine rebuilding. The best option depends on the application, manufacturer, availability, and customer preference.
Do you carry parts for older outboard motors?
Yes. Pro Marine carries parts for many older Mercury, Mariner, Johnson, Evinrude, Chrysler, Force, Yamaha, Honda, Suzuki, Nissan, and Tohatsu outboards. Availability varies by engine family and component.
What outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump impellers, complete water pump kits, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Outboard parts can vary by model, serial range, horsepower, and production year. Confirm the OEM part number or engine identification information whenever possible before ordering.
18-8003
8M0154777
8692305
509435
53079
53079
53079A1
53079A1
Mercury OEM 881170A15 8-Pin Side Mount Remote Control
The Mercury 881170A15 Side Mount Control is a genuine Mercury OEM remote-control assembly for compatible mechanical rigging systems using an 8-pin electrical connection.
This side-mount control is configured for Gen 1-style mechanical throttle and shift cables, includes a 15-foot harness, and provides power trim and tilt control on the compatible installation.
Product Information
- Part Number: 881170A15
- Brand: Genuine Mercury OEM
- Part Type: Side Mount Remote Control
- Electrical Connection: Mercury 8-Pin
- Control Cable Type: Gen 1 Style
- Harness Length: 15 Feet
- Trim Function: Power Trim and Tilt Control
- Mounting Style: Side Mount
- Aftermarket Alternative: Pro Marine 881170A15P
Important Fitment Note
Do not choose this control by engine horsepower alone. Compatibility depends on the boat's complete Mercury rigging configuration.
This OEM control is for compatible applications requiring a Mercury 8-pin electrical connection, Gen 1-style mechanical control cables, and a 15-foot harness.
Similar Mercury side-mount controls may use a 14-pin connection, different cable generation, different harness length, or another control configuration. Verify the original control and rigging before ordering.
OEM and Cross Reference Numbers
Mercury 881170A15 is associated with the following remote-control references for compatible applications.
| Part Number | Relationship |
|---|---|
| 881170A15 | Genuine Mercury OEM |
| 16900A15 | Mercury Cross Reference |
| 16900A20 | Mercury Cross Reference |
| 8M0178521 | Newer Mercury Replacement Reference |
| 8M0178524 | Mercury Cross Reference |
| 881170A1 | Earlier Mercury Reference |
| 881170A2 | Earlier Mercury Reference |
| 881170A20 | Mercury Cross Reference |
| 88170A15 | Cross Reference |
| 881170A15P | Pro Marine Aftermarket Alternative |
What This Control is Used For
This Mercury side-mount remote control provides helm operation of the mechanical throttle and shift system on compatible Mercury installations.
The control mounts on the side of the helm or console rather than on top of the console, and it connects to the engine rigging using the required Mercury 8-pin electrical harness and Gen 1-style control cables.
The compatible installation also provides power trim and tilt operation from the remote-control handle.
Mercury Rigging Fitment
This control is best identified by its rigging configuration rather than by engine horsepower or a broad model-year range.
| Fitment Requirement | Required Configuration |
|---|---|
| Rigging Brand | Compatible Mercury Mechanical-Control System |
| Mounting Style | Side Mount |
| Electrical Connection | Mercury 8-Pin |
| Control Cable Type | Gen 1-Style Mechanical Control Cables |
| Harness Length | 15 Feet |
| Trim Configuration | Power Trim and Tilt |
| Control Operation | Mechanical Throttle and Shift |
8-Pin vs. 14-Pin Mercury Side Mount Controls
Mercury used several electrical configurations in its mechanical remote controls. The 881170A15 is an 8-pin control.
Do not confuse it with 14-pin Mercury side-mount controls. Even when the outside appearance is similar, the electrical harness may be different. Always inspect the existing connector before ordering.
Gen 1 Control Cable Application
This remote control is intended for compatible Gen 1-style Mercury mechanical control cables.
Gen 1 and Gen 2 control cables use different control-end attachment configurations. A Gen 2 cable application should not be assumed to work with this control.
Pro Marine 881170A15P Side Mount Control
Looking for an aftermarket alternative? Pro Marine USA also stocks 881170A15P for the compatible 8-pin, Gen 1 cable, 15-foot harness application.
Common Replacement Reasons
- Original side-mount control is worn or physically damaged.
- Throttle or shift lever operation has become loose or unreliable.
- Power trim switch in the original control no longer functions correctly.
- Control housing, wiring, or internal mechanism has been damaged.
- An older matching Mercury control is being replaced during a rigging restoration.
- Existing control has been identified as one of the matching cross-reference numbers.
Hard shifting or throttle movement may also be caused by worn, corroded, binding, or incorrectly adjusted control cables. The complete control and cable system should be inspected during diagnosis.
Installation Tips
- Disconnect battery power before servicing the control or engine electrical system.
- Verify the original control uses the required Mercury 8-pin electrical connection.
- Confirm both throttle and shift cables use Gen 1-style connections.
- Inspect existing control cables for corrosion, stiffness, kinks, or excessive wear.
- Verify the 15-foot harness is appropriate for the existing routing.
- Route wiring and cables without excessive tension, sharp bends, or chafing.
- After installation, verify neutral, shift direction, throttle travel, trim operation, and overall control function.
Remote-control installation directly affects throttle and shift operation. Installation and adjustment should be performed by a qualified marine technician when the installer is not familiar with Mercury mechanical rigging.
Key Features and Benefits
- Genuine Mercury OEM: Factory Mercury remote-control assembly.
- 8-Pin Configuration: For compatible Mercury 8-pin electrical systems.
- Side Mount Design: Designed for compatible side-mounted helm installations.
- Gen 1 Cable Fitment: Uses compatible Gen 1-style mechanical control cables.
- 15-Foot Harness: Configured with the specified harness length.
- Power Trim and Tilt: Provides trim control on compatible Mercury applications.
- Aftermarket Alternative: Pro Marine 881170A15P is also available.
Frequently Asked Questions
What is Mercury 881170A15?
It is a genuine Mercury OEM side-mount remote control for compatible mechanical rigging systems using an 8-pin electrical connection, Gen 1-style control cables, and a 15-foot harness.
Does Mercury 881170A15 use an 8-pin connector?
Yes. This control is listed for the Mercury 8-pin electrical configuration.
What type of control cables does it use?
It is intended for compatible Gen 1-style mechanical throttle and shift cables.
How long is the harness?
The harness is 15 feet long.
Does this control include trim operation?
Yes. This configuration provides power trim and tilt control on the compatible Mercury installation.
What supersedes Mercury 881170A15?
Mercury parts information identifies 8M0178521 as a newer replacement reference for 881170A15.
Is Pro Marine 881170A15P an aftermarket alternative?
Yes. Pro Marine USA also stocks the Pro Marine 881170A15P side-mount control .
Is this the same as a 14-pin Mercury control?
No. This is the 8-pin version. A 14-pin control uses a different electrical configuration.
Can I use this with Gen 2 control cables?
Do not assume compatibility. This control is specifically identified for Gen 1-style cables.
Will this fit every Mercury outboard?
No. Fitment depends on the complete rigging setup, including connector style, cable generation, mounting configuration, and harness requirements.
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
881170A15, 16900A15, 16900A20, 8M0178521, 8M0178524, 881170A1, 881170A2, 881170A20, 88170A15, 881170A15P
Searchable Terms
Mercury OEM side mount control, Mercury 8 pin side mount control, Mercury 8-pin remote control, Mercury Gen 1 control, Mercury Gen 1 cable control, Mercury 15 foot harness control, Mercury trim and tilt control, Mercury mechanical remote control, Mercury throttle and shift control, Mercury control box, Mercury side mount remote, 881170A15, 8M0178521 replacement, 16900A15 replacement
16900A20
8M0178521
8M0178524
881170A1
881170A15
881170A2
881170A20
88170A15
840836A1
840836A2
18-4310
39354
777479
802124
9-64110
0398355
18-4311
396677
802129
39070
0398047
0438904
0777421
18-4321
39390
438904
777421
9-64101
18-4324
390700
39355
0777466
18-4322
39400
432570
777466
9-64109
0432687
0436891
0777469
18-4323
39410
436891
777469
9-64108
F694961-1
F6949611
18-2346
23200
42633
824519
8245191
9-78126