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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.
93332-000UD-00
93332-000U5-00
93332-000W7-00
Pro Marine Square Fuel Pump for Mercury and Mariner 30-300HP
The Pro Marine 14360P Square Fuel Pump is a premium aftermarket replacement for Mercury and Mariner outboards using the popular 14360-series mechanical fuel pump. It provides a direct-fit, dependable alternative to the genuine Mercury assembly across numerous carbureted, EFI and Optimax applications.
Complete Square Mechanical Fuel Pump
This listing is for the complete engine-mounted square fuel pump assembly. It is not only a diaphragm or internal rebuild kit.
The pump uses crankcase pressure pulses to draw fuel from the boat's fuel supply and deliver it to the carburetors, fuel reservoir, vapor separator or Optimax fuel system, depending on the engine design.
Pro Marine item: 14360P
Replacement type: Mechanical diaphragm fuel pump
Primary Mercury reference: 14360A78
Why Choose the Pro Marine Replacement?
A Pro Marine replacement part developed for the marine repair and replacement-parts market.
Replaces numerous Mercury 14360-series square fuel-pump revisions.
Replaces the complete square mechanical pump rather than only the internal diaphragm.
An economical alternative for customers who do not require a genuine Mercury-branded component.
Used on select Mercury and Mariner 30-300HP carbureted, EFI, DFI and Optimax engines.
Supplied by Pro Marine USA with technical fitment assistance available before ordering.
OEM & Cross Reference Numbers
Mercury revised this square fuel-pump assembly numerous times. Match one of the numbers below to the original pump or to the number shown in the Mercury parts catalog.
Mercury and Mariner Fitment Overview
This pump appears across many Mercury and Mariner engine families. Use the overview below to identify the general engine group, and then compare your engine serial number with the detailed fitment section.
| Engine Family | Common Applications |
|---|---|
| 30-60HP | Select 2-cylinder, 3-cylinder, 4-cylinder, Jet and BigFoot Mercury and Mariner models |
| 65-125HP | Select 3-cylinder, 4-cylinder, 6-cylinder, Jet, Marathon, SeaPro, EFI and Optimax models |
| 135-200HP | Select V6 carbureted, EFI, XR6, Magnum, Marathon, SeaPro and Optimax models |
| 225-300HP | Select V6, EFI, DFI, Optimax, Pro Max, Pro XS, Marathon and SeaPro models |
Common Mercury Optimax Applications
The Pro Marine 14360P is commonly used on the following Mercury Optimax, Pro XS and XS engine families when the original engine calls for one of the listed OEM fuel-pump numbers.
3-cylinder, 2004-2014
3-cylinder, 2006-2014
3-cylinder, 2004-2014
1.5L 3-cylinder, 2004-2014
1.5L 3-cylinder, 2006-2012
3.0L 6-cylinder, 1997-2002
3.0L 6-cylinder, 1998-2006
3.0L, 2004-2018
3.0L, 2006-2018
3.0L, 1998-2005
3.2L, 2006-2017
Important Fitment Note
Mercury used several square fuel-pump revisions across engines with the same horsepower. Horsepower or model year alone is not enough to confirm fitment.
Match the OEM number on the original pump or verify the complete engine serial number in the detailed fitment information. The application should call for one of the listed 14360-series or related OEM numbers.
What This Fuel Pump Does
The square mechanical fuel pump uses pressure pulses from the engine crankcase to move fuel through the outboard's low-pressure fuel system.
Depending on the engine design, the pump may supply fuel directly to the carburetors or feed a fuel reservoir, vapor separator or Optimax fuel system.
Possible Symptoms of a Weak Fuel Pump
- Hard starting or extended cranking
- Engine stalls shortly after starting
- Fuel starvation under load
- Hesitation during acceleration
- Loss of power at higher RPM
- Engine runs better while the primer bulb is manually pumped
- Fuel leakage around the pump or diaphragm housing
These symptoms can also result from restricted fuel filters, damaged fuel lines, air leaks, carburetor problems or other fuel-system faults. Diagnose the complete fuel system before replacing the pump.
Grouped Mercury Serial-Number Fitment
The serial-number ranges below are grouped where multiple horsepower or model families share the same catalog range. This keeps the information searchable without repeating identical serial ranges for every horsepower.
| Engine Models | Serial Number Range | Catalog Notes |
|---|---|---|
| 30, 40HP 3-cylinder | 0G590000 through 0G760299 | Select USA production models |
| 40, 50HP 3-cylinder | 0G760300 through 0T979999 | Select USA and Belgium production models |
| 50, 55, 60HP 3-cylinder | 0G590000 through 0T979999 | Includes listed standard, BigFoot and Jet applications |
| 45, 50, 55, 60 Jet | 0G590000 through 0T979999 | Select USA and Belgium Jet models |
| 65, 75, 90HP 3-cylinder | 0D283222 through 0G960499 | Select carbureted and early production applications |
| 75, 80, 90, 115, 125HP Optimax | 0T178500 and later listed production ranges | 1.5L 3-cylinder DFI and Optimax models |
| 100, 115, 125HP | 0G960500 through 1B226999 | Select 4-cylinder, EFI and related applications |
| 135, 150, 175, 200HP V6 | 0G960500 through 1B226999 | Select carbureted, EFI, XR6, Magnum, Marathon and SeaPro models |
| 200, 225HP Optimax | 0G960500 through 1B417701 | Select 3.0L DFI and Optimax production ranges |
| 225, 250HP Pro XS | 1B226999 through listed later production ranges | Select 3.0L Pro XS applications |
| 250, 275HP Verado and related models | Refer to OEM number and complete serial lookup | Catalog includes select production-specific applications |
| 300HP Pro Max and XS | 0T409000 through listed 1B-series ranges | Select 3.0L Pro Max and 3.2L XS applications |
Mercury catalog applications can differ by production country, engine configuration and serial break. Use the complete serial number and confirm that the parts catalog specifies one of the OEM numbers shown on this page.
Prefer the Genuine Mercury Fuel Pump?
The Pro Marine 14360P is the primary replacement featured on this page. Customers who prefer a genuine factory Mercury component can select the OEM version below.
Genuine Mercury Square Fuel Pump Kit
Genuine Mercury fuel-pump assembly for customers who prefer a factory OEM component. Match OEM number 14360A78 or one of its listed superseded references before ordering.
View Genuine Mercury PumpPro Marine vs. Genuine Mercury
| Feature | Pro Marine 14360P | Genuine Mercury |
|---|---|---|
| Complete square fuel pump | Yes | Yes |
| Direct replacement application | Yes | Yes |
| Pro Marine branded part | Yes | No |
| Factory Mercury-branded component | No | Yes |
| Value-focused replacement option | Yes | Factory OEM option |
Frequently Asked Questions
Is this a Pro Marine product?
Yes. Item 14360P is a Pro Marine-branded premium aftermarket replacement fuel pump.
Is this a complete fuel pump?
Yes. This is the complete square mechanical fuel-pump assembly, not only a diaphragm or rebuild kit.
Does this replace Mercury 14360A78?
Yes. Pro Marine 14360P is an aftermarket replacement for Mercury 14360A78 and the other listed superseded and cross-reference numbers.
Will this fit every Mercury 30-300HP outboard?
No. The 30-300HP range describes the combined application coverage. Fitment depends on the engine model, configuration, serial number and OEM fuel-pump number.
Why is the serial number important?
Mercury frequently used different components within the same horsepower and model family. The engine serial number identifies the exact production range and is more reliable than horsepower alone.
Does this fit Mercury Optimax engines?
It fits the listed Optimax, Pro XS and XS applications that call for one of the OEM fuel-pump numbers shown on this page.
Is the genuine Mercury version available?
Yes. Use the Genuine Mercury product card above to view the factory OEM version.
The Pro Marine Advantage
Pro Marine supplies marine professionals, repair facilities, dealerships and boat owners with replacement engine parts 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 the marine repair market.
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 14360P, 14360P, 14360A14, 14360A15, 14360A16, 14360A24, 14360A27, 14360A41, 14360A43, 14360A53, 14360A66, 14360A69, 14360A71, 14360A78, 14360T75, 15930A21, 98766-C1, 98766C1, 99357A4, Mercury square fuel pump, Mercury mechanical fuel pump, Mercury pulse fuel pump, Mariner square fuel pump, Mercury Optimax fuel pump, Mercury Pro XS fuel pump, Mercury 30HP fuel pump, Mercury 40HP fuel pump, Mercury 50HP fuel pump, Mercury 60HP fuel pump, Mercury 75HP fuel pump, Mercury 90HP fuel pump, Mercury 115HP fuel pump, Mercury 125HP fuel pump, Mercury 150HP fuel pump, Mercury 175HP fuel pump, Mercury 200HP fuel pump, Mercury 225HP fuel pump, Mercury 250HP fuel pump, Mercury 300HP fuel pump
14360A15
14360A16
14360A24
14360A27
14360A41
14360A43
14360A53
14360A66
14360A69
14360A71
14360A78
14360T75
15930A21
98766-C1
98766C1
99357A4
17400-98651
17400-98652
5030352
117-68815
11768815
688-85540-12-00
688-85540-13-00
688-85540-14-00
688-85540-15-00
688-85540-16-00
90171-18M04-00
698-W0001-20-00
6R3-81960-00-00
6R3-81960-10-00
3397
679-W0078-A0-00
679-W0078-A1-00
679-W0078-00-00
679-W0078-01-00
84363M
84363T
6L5-14301-03-00
6L5-14301-04-00
6L5-14301-05-00
6L5-14301-06-00
4 Stroke
6 Cylinder
DF200 2004-2011
DF225 2004 & Up
DF250 2004 & Up
DF300 2007 & Up
17400-98J01
17400-98J02
17400-98J03
17400-98J04
17400-98J05
17400-98J06
18-3267
8M6012815