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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

 

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.

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Johnson/Evinrude 175-235hp Big Bore Crossflow
Item#:
4309
Cross Reference#:
18-4309
391989
39430
394885
777476
802134
879008
9-64115
Manufacturer Item:
434381
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
198.92
Each
Johnson / Evinrude V4 60 Deg 1992 & Up
Item#:
60PH
Cross Reference#:
0436180
0436945
0438114
0438115
0438921
0438922
Manufacturer Item:
0438922
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
0.00
Each
Contact us to order
Johnson/Evinrude 60° V6 1994 & UP Carb
Item#:
4371
Cross Reference#:
39352
9-64107
Manufacturer Item:
437155
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
163.66
Each
Johnson/Evinrude 60º V4 Carb
Item#:
4372
Cross Reference#:
39351
439559
9-64100
Manufacturer Item:
437779
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
105.01
Each
Johnson/Evinrude 75-115hp 60º FFI
Item#:
4373
Cross Reference#:
39356
500040
5000400
9-64103
Manufacturer Item:
5000400
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
65.09
Each
Evinrude 135-175hp 60º FFI FFI
Item#:
4374
Cross Reference#:
18-4420
439202
9-64105
Manufacturer Item:
439202
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
101.59
Each
Synthetic Blend Oil for Verado and High-Performance Mercury Engines

OEM Mercury High-Performance Marine Engine Oil

Mercury SAE 25W50 Synthetic Blend Marine Engine Oil - 1 Quart

Mercury 8M0078013 is a premium SAE 25W50 synthetic blend 4-stroke marine engine oil designed for Mercury Verado, Mercury Racing, FormulaRace, and other high-performance marine engines where Mercury specifies 25W50 FC-W marine oil.

This OEM Mercury marine oil helps provide excellent wear protection, corrosion resistance, viscosity stability, and sludge protection under demanding marine operating conditions.

Recommended Applications

Engine Family Application Oil Specification Notes
Mercury Verado 4-Stroke Outboards SAE 25W50 FC-W Use where Mercury specifies 25W50 oil
Mercury Racing High-Performance Outboards SAE 25W50 FC-W Recommended for Racing 4-stroke applications
FormulaRace Engines Performance Marine Engines SAE 25W50 FC-W OEM Mercury recommendation
Mercury Racing Sterndrives 525 EFI through 1650 SAE 25W50 FC-W High-horsepower sterndrive applications
OEM Mercury Formula:

Mercury 25W50 marine engine oil is engineered specifically for high-load marine applications and is formulated to help protect against corrosion, varnish buildup, sludge formation, and viscosity breakdown in harsh marine environments.

This oil meets or exceeds FC-W marine oil requirements when SAE 25W50 oil is specified by Mercury Marine.
Important Application Note:

Always verify your owner's manual or service manual before ordering. Mercury uses multiple oil viscosities depending on engine family, horsepower range, operating temperature, and application.

This oil is specifically intended for applications where SAE 25W50 marine oil is required.

Available Oil Size Options

Oil Package Product Best For
1 Quart Bottle Mercury 25W50 Marine Oil - 1 Quart Top-offs, smaller oil changes, adding exact quantities
1 Gallon Jug Mercury Verado 25W50 Oil - 1 Gallon Full oil changes and multi-engine service

Complete Your Service

What This Oil is Used For

Mercury 8M0078013 SAE 25W50 marine engine oil is used in high-performance Mercury marine engines requiring FC-W rated 25W50 oil protection.

It is commonly used in Mercury Verado outboards, Mercury Racing outboards, FormulaRace engines, and Mercury Racing sterndrive applications.

Mercury formulated this oil specifically for marine operating conditions, including sustained RPM operation, moisture exposure, corrosion resistance, and high engine loads.

This quart bottle is ideal for topping off engines, carrying onboard, or combining with gallon containers for complete oil changes.

Key Features and Benefits

  • OEM Mercury Marine engine oil
  • SAE 25W50 synthetic blend formulation
  • Designed for high-performance marine engines
  • Recommended for Mercury Verado applications
  • Recommended for Mercury Racing outboards and sterndrives
  • Provides excellent wear and corrosion protection
  • Helps resist sludge and varnish buildup
  • Maintains viscosity under demanding operating conditions
  • Meets or exceeds FC-W marine oil requirements
  • 1 quart bottle size

Oil Details

  • Part Number: 8M0078013
  • Mercury Number: 92-8M0078013
  • Oil Type: Synthetic Blend Marine Engine Oil
  • Viscosity: SAE 25W50
  • Certification: FC-W Marine Oil
  • Container Size: 1 Quart
  • Brand: Mercury Marine
  • Application: High-Performance 4-Stroke Marine Engines

FAQ

Is this the correct oil for Mercury Verado engines?
Yes, this oil is commonly recommended for Mercury Verado outboards where Mercury specifies SAE 25W50 FC-W marine engine oil.

Is this a full synthetic oil?
No. Mercury 8M0078013 is a synthetic blend marine engine oil.

Does this oil meet FC-W requirements?
Yes. This oil meets or exceeds marine engine manufacturer warranty requirements and recommendations for FC-W marine engine oil when SAE 25W50 is specified.

Can I use this in Mercury Racing applications?
Yes. Mercury specifically recommends this oil for many Mercury Racing four-stroke outboards and sterndrive engines.

How much oil does my engine require?
Oil capacity varies by engine model and application. Always check your owner's manual or service manual for exact oil quantity requirements.

Is this sold in larger containers?
Yes. Mercury also offers this oil in a 1 gallon container, linked above.

Dealer Discounts & Store Policies

Dealer / Marine Industry Discounts

Are you a marine dealer, technician, boat builder, or marine industry professional? We offer dealer pricing for qualified businesses.

Apply for a Dealer Account

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.
  • Oil and lubricants must be unopened and unused for return eligibility.
  • Return authorization is required before sending items back.

Need help with a return or product question?
Contact Us
Phone: 941-721-3000


Searchable Terms

8M0078013, 92-8M0078013, Mercury 25W50 oil, Mercury Verado oil, Mercury Racing oil, Mercury marine engine oil, Mercury 25W50 synthetic blend oil, Verado engine oil, Mercury Racing sterndrive oil, FormulaRace oil, Mercury FC-W oil, Mercury high-performance marine oil, Mercury 25W50 quart

Item#:
8M0078013
Cross Reference#:
8M0053662
8M0053665
8M0078013
Manufacturer Item:
8M0053665
Manufacturer:
Mercury Marine
Available:
In Stock
Your Price:
31.99
Each
Mercury 40-200hp R/MR/Alpha I 1983-1990
Item#:
6011K
Cross Reference#:
12670
18-6011
31640
31640A1
31640A2
31640A4
31640BK4
31640B4
31640Q4
31640T07
31640T4
31640T5
316403
316404
316405
41107-ZW1-003ZA
72436A1
8M0059338
Manufacturer Item:
31640Q4
Manufacturer:
Tecno Seal
Available:
In Stock
Your Price:
15.43
Each
Johnson/Evinrude 120-225hp Cobra V6 V8 w/1 1/4"
Item#:
4467
Cross Reference#:
0434467
22950
Manufacturer Item:
434467
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
32.95
Each
Yamaha Conventional Style
Item#:
6YK-24306
Cross Reference#:
6YK-24306-60-00
6YK-24306-61-00
6YK-24306-62-00
6YK-24306-63-00
6YK-24306-64-00
6YK-24306-68-00
6YK-24306-69-00
6YK-24306-70-00
6YK-24306-71-00
6YK-24306-72-00
6YK-24306-73-00
6YK-24306-74-00
6YL-24306-68-00
6YL-24306-69-00
6YL-24306-70-00
6YL-24306-71-00
6YL-24306-72-00
6YL-24306-73-00
6YL-24306-74-00
6Y2-24306-A0-00
6Y2-24306-A1-00
6Y2-24306-A2-00
6Y2-24306-A3-00
6Y2-24306-A4-00
6Y2-24306-A5-00
6Y2-24306-01-00
6Y2-24306-02-00
6Y2-24306-03-00
6Y2-24306-04-00
6Y2-24306-05-00
6Y2-24306-40-00
6Y2-24306-41-00
6Y2-24306-42-00
6Y2-24306-44-00
6Y2-24306-45-00
6Y2-24306-51-00
6Y2-24306-52-00
6Y2-24306-53-00
6Y2-24306-54-00
6Y2-24306-55-00
6Y2-24306-56-00
6Y2-24306-60-00
6Y2-24306-61-00
6Y2-24306-62-00
6Y2-24306-63-00
6Y2-24306-64-00
6Y2-24306-68-00
6Y2-24306-69-00
6Y2-24306-72-00
6Y2-24306-73-00
6Y2-24306-74-00
6Y2-24306-80-00
6Y2-24306-83-00
6Y2-24306-84-00
6Y2-24306A5-00
6Y4-24306-80-00
6Y4-24306-83-00
6Y4-24306-84-00
Manufacturer Item:
6YK-24306-64-00
Manufacturer:
Yamaha Outboard
Available:
In Stock
Your Price:
117.99
Each
Johnson/Evinrude 90-250hp OMCString/Cobraw/1 3/16&1 1/4"
Item#:
9455
Cross Reference#:
0389455
0769642
18-3767
18-3767
27700
27700
389455
769642
Manufacturer Item:
389455
Manufacturer:
Engineered Marine Parts
Available:
In Stock
Your Price:
179.99
Each
Johnson/Evinrude 85-300hp Crossflow & Loopers
Item#:
495
Cross Reference#:
F40342
0303059
0339543
0385822
0769231
20195
201951
303059
339543
385822
802205
Manufacturer Item:
385822
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
92.45
Each
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