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Outboard Motor Parts | Mercury, Yamaha, Suzuki & More
Shop outboard motor parts for maintenance, repair, troubleshooting, and full marine engine rebuild projects. This category includes OEM parts and quality OEM specification aftermarket products from Pro Marine, along with replacement marine parts for Chrysler Force, Honda, Johnson Evinrude E-tec, Mercury, Suzuki, Tohatsu Nissan, and Yamaha outboard engines.
Use this section to browse outboard parts by brand and engine system, including cooling, fuel delivery, ignition and electrical, intake, internal engine components, lower unit parts, steering, trim, transom, midsection, engine oil, service kits, gaskets, seals, carburetor parts, water pump parts, and rebuild components.
Shop Outboard Categories
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair 
Honda Outboard Honda cooling, fuel, electrical, and engine parts 
Johnson / Evinrude / E-tec Outboard OMC, Johnson, Evinrude, and E-tec parts 
Mercury Outboard Mercury and Mariner service and rebuild parts 
Suzuki Outboard Suzuki maintenance, lower unit, and engine parts 
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts 
Yamaha Outboard Yamaha service, repair, and rebuild parts Common Outboard Parts Found in This Category
- Water pump kits, impellers, thermostats, and cooling system parts
- Carburetor kits, fuel pumps, fuel filters, and fuel system components
- Ignition coils, stators, switch boxes, rectifiers, sensors, and electrical parts
- Pistons, piston rings, bearings, crankshafts, sleeves, gaskets, and rebuild parts
- Lower unit seals, bearings, gears, driveshaft parts, and gearcase components
- Steering parts, control cables, trim parts, and transom components
- Engine oil, gear lube, service kits, spark plugs, seal kits, and routine maintenance parts
Common Outboard Problems and Where to Start
- Overheating: inspect the water pump, impeller, thermostat, cooling passages, and engine anodes.
- Hard starting or rough idle: check carburetor parts, fuel delivery, ignition components, spark plugs, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes, sensors, wiring, and related electrical components.
- Low compression or poor power: inspect pistons, rings, gaskets, cylinder condition, bearings, and internal engine components.
- Milky gear lube or gearcase noise: check lower unit seals, bearings, gears, driveshaft parts, and prop shaft components.
Frequently Asked Questions
What is the difference between OEM and aftermarket outboard parts?
OEM parts are made by the original engine manufacturer. Aftermarket parts are replacement parts made by other manufacturers to fit the same application. Pro Marine provides quality OEM specification aftermarket products designed for marine maintenance, repair, and rebuild work.
How do I find parts for my outboard engine?
Start by selecting your outboard brand, then choose the correct engine system category. Use your model number, serial number, horsepower, and year range to confirm fitment before ordering parts.
What information do I need before ordering outboard parts?
You should have the engine manufacturer, horsepower, model number, serial number, and any OEM part numbers from the original component when available. This helps avoid ordering parts that look similar but fit a different engine family.
Are aftermarket outboard parts reliable?
Yes, quality aftermarket outboard parts are commonly used by marine mechanics and rebuilders. Pro Marine offers OEM specification aftermarket products for many common outboard repair, maintenance, and rebuild applications.
What brands are included in the outboard category?
This category includes Chrysler Force, Honda, Johnson Evinrude E-tec, Mercury, Suzuki, Tohatsu Nissan, and Yamaha outboard parts.
Tip: Before ordering outboard parts, confirm your engine brand, horsepower, model number, serial number, and year range whenever possible.
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 |
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.
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
Mercury 25W50 Oil - 1 Gallon
OEM Mercury SAE 25W50 synthetic blend marine engine oil in the gallon size for Verado and Mercury Racing oil changes.
View Product
Mercury Verado Service Kits
OEM Mercury maintenance kits with filters, service components, and Mercury 25W50 engine oil for compatible Verado outboards.
View ProductWhat 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.
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
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