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Mercury Racing 500R 300 Hour Service Kit With Oil & Gear Lube
Mercury 500R V8 4.6L 300 Hour Maintenance Kit With Oil
The MER500R-300L 300 Hour Service Kit is designed for Mercury Racing 500R 4.6L V8 outboards. This complete maintenance package includes the major Mercury 500R 300 hour service components plus Mercury 10W30 Full Synthetic engine oil and Mercury Extreme Performance 85W90 gear lube.
This complete version is ideal for customers who want the filters, thermostat, belts, impeller kit, spark plugs, engine oil, and gear lube needed for a Mercury Racing 500R 300 hour service in one package.
Compatible Applications
| Brand | Engine | Displacement | Service Interval |
|---|---|---|---|
| Mercury Racing | 500R V8 FourStroke | 4.6L | 300 Hour Maintenance |
This kit includes Mercury 10W30 Full Synthetic engine oil and Mercury Extreme Performance 85W90 gear lube.
Mercury recommends Mercury 10W30 Full Synthetic Oil , which is included in this kit.
Mercury also recommends Mercury 10W30 MRX Racing Oil for customers who prefer MRX race oil.
Want to Use a Different Oil?
500R 300 Hour Kit Without Oil & Gear Lube
Some customers prefer to order a different recommended oil option, such as Mercury 10W30 MRX Racing Oil, or already have engine oil and gear lube on hand. The MER500R-300 kit is available without engine oil and gear lube.
View Kit Without Oil & Gear LubeWhat is Included
| Qty | Part | Description |
|---|---|---|
| 1 | 8M0123025 | OEM Mercury Oil Filter |
| 2 | 8M0204693 | Lower Unit Drain Plug Seals |
| 1 | 8M0166596 | OEM Mercury Fuel Filter |
| 1 | 8M0210477 | Thermostat Assembly |
| 8 | LKAR7C-9 | NGK Spark Plugs |
| 1 | 8M0200136 | Water Pump Impeller Repair Kit |
| 1 | 8M0210486 | Supercharger Belt |
| 1 | 8M0142251 | Serpentine Belt |
| 1 | 8M0137814 | Lower Unit Aluminum Anode |
| 2 Gallons | 8M0173224 | Mercury 10W30 Full Synthetic Marine Engine Oil |
| 1 Quart | 8M0111677 | Mercury Extreme Performance Gear Lube 85W90 |
500R Anodes & Corrosion Protection
What This Service Kit is Used For
The MER500R-300L service kit is used for complete scheduled 300 hour maintenance on Mercury Racing 500R 4.6L V8 outboards.
This complete maintenance package supports oil filtration, fuel filtration, thermostat replacement, water pump service, spark plug replacement, supercharger and serpentine belt replacement, lower unit anode replacement, engine oil service, and gearcase lubricant service.
Key Features and Benefits
- Designed for Mercury Racing 500R V8 4.6L outboards
- Complete 300 hour maintenance package
- Includes Mercury 10W30 Full Synthetic engine oil
- Includes Mercury Extreme Performance 85W90 gear lube
- Includes OEM Mercury filters, thermostat, belts, and impeller kit
- Includes NGK spark plugs and lower unit anode
- Links to related 500R anodes and maintenance parts
- Supports scheduled Mercury Racing maintenance intervals
Service Kit Details
- Part Number: MER500R-300L
- Related Kit Without Oil: MER500R-300
- Application: Mercury Racing 500R
- Engine: V8 4.6L FourStroke
- Service Interval: 300 Hour Maintenance
- Oil Included: Yes - Mercury 10W30 Full Synthetic
- Oil Quantity Included: 2 gallons
- Gear Lube Included: Yes - Mercury Extreme Performance 85W90
- Gear Lube Quantity Included: 1 quart
FAQ
What engine does this kit fit?
This kit fits Mercury Racing 500R 4.6L V8 outboards.
Does this kit include engine oil?
Yes. This version includes Mercury 10W30 Full Synthetic engine oil.
Does this kit include gear lube?
Yes. This kit includes Mercury Extreme Performance 85W90 gear lube.
What other oil does Mercury recommend?
Mercury also recommends Mercury 10W30 MRX Racing Oil for customers who prefer MRX race oil.
Is there a version without oil and gear lube?
Yes. The MER500R-300 kit without oil and gear lube is linked above.
Does this kit include the 500R service belts and thermostat?
Yes. This kit includes the thermostat, supercharger belt, serpentine belt,
water pump impeller repair kit, spark plugs, filters, and lower unit anode.
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.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
MER500R-300L, MER500R-300, Mercury 500R 300 hour service kit, Mercury Racing 500R 300 hour kit, Mercury 500R oil change kit, Mercury 500R thermostat kit, Mercury 500R impeller kit, Mercury 500R spark plugs, Mercury 500R supercharger belt, Mercury 500R serpentine belt, Mercury 10W30 Full Synthetic, Mercury 10W30 MRX Racing Oil, Mercury Extreme Performance Gear Lube 85W90, 8M0123025, 8M0204693, 8M0166596, 8M0210477, LKAR7C-9, 8M0200136, 8M0210486, 8M0142251, 8M0137814, 8M0173224, 8M0111677
Mercury Exhaust Cover Gasket 414991
The Mercury 414991 Exhaust Cover Gasket is a genuine OEM gasket used on Mercury 2-cylinder 2-stroke outboards. It provides a precise seal between the exhaust cover and engine block to prevent exhaust and cooling water leaks.
Fitment Overview
This OEM gasket replaces earlier Mercury part numbers 41499 and 92332. These part numbers are used across Mercury 2-cylinder engines in the 15HP through 25HP range, including both recreational and commercial-duty models.
OEM diagram lookup confirms this gasket is used on engines that share the same exhaust cover design and sealing surface.
Compatibility
| Brand | Model | Engine Type |
|---|---|---|
| Mercury | 15 HP / Super 15 | 2-Cylinder 2-Stroke |
| Mercury | 18XD | 2-Cylinder 2-Stroke |
| Mercury | 20 HP / 20XD / 20 Jet | 2-Cylinder 2-Stroke |
| Mercury | 25 HP / 25XD | 2-Cylinder 2-Stroke |
| Mercury | 15 / 25 Sea Pro | 2-Cylinder 2-Stroke |
| Mercury | 15 / 25 Marathon | 2-Cylinder 2-Stroke |
These engines share a common exhaust cover design where this gasket is required.
Example Model Applications
- Mercury 15HP and Super 15 outboards
- Mercury 18XD models
- Mercury 20HP, 20XD, and 20 Jet models
- Mercury 25HP and 25XD outboards
- Mercury Sea Pro and Marathon commercial engines
These are common applications. Always verify using your engine serial number or OEM diagram.
Fits These Serial Ranges
This gasket is used across multiple Mercury 2-cylinder engine generations and does not follow a single serial-number break.
Important: Confirm compatibility by matching your existing gasket to 414991, 41499, or 92332.
Looking for a more cost-effective aftermarket option?
View Sierra 18-2716 Exhaust Cover Gasket
Part Numbers and Cross References
| Type | Part Number |
|---|---|
| Mercury OEM | 414991 |
| Mercury OEM | 41499 |
| Mercury OEM | 92332 |
| Aftermarket | 18-2716 (Sierra) |
What This Part Is Used For
This gasket seals the exhaust cover to the engine block, ensuring proper containment of exhaust gases and maintaining correct cooling system flow.
- Provides OEM-quality sealing between exhaust cover and block
- Prevents exhaust and water leaks
- Maintains proper cooling flow through the engine
- Ensures reliable long-term performance
Using a genuine OEM gasket ensures proper fitment and durability for long-term engine reliability.
System Function and Connections
- System Type: Exhaust system
- Component Type: Exhaust cover gasket
- Location: Between exhaust cover and engine block
FAQ
Is this a genuine Mercury part?
Yes, this is an OEM Mercury gasket.
What engines does this fit?
It fits Mercury 15HP through 25HP 2-cylinder 2-stroke outboards.
Does this replace older part numbers?
Yes, it replaces 41499 and 92332.
Why choose OEM?
OEM parts are manufactured to exact specifications for proper fit and long-term reliability.
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.
- Items must be new, unused, and in original packaging.
- 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
414991, 41499, 92332, Mercury 25HP gasket, Mercury 2-cylinder exhaust gasket, OEM Mercury gasket
41499
414991
92332
Mercury Racing 500R 100 Hour Service Kit
Mercury 500R V8 4.6L 100 Hour Maintenance Kit
The MER500R-100 100 Hour Service Kit is designed for Mercury Racing 500R 4.6L V8 outboards. This maintenance kit includes the essential OEM Mercury service parts needed for routine 100 hour maintenance.
Regular maintenance helps maximize performance, reliability, and durability on high-performance Mercury Racing outboards. This kit includes genuine Mercury filters and seals commonly replaced during scheduled service intervals.
Compatible Applications
| Brand | Horsepower | Engine | Application |
|---|---|---|---|
| Mercury Racing | 500R | V8 4.6L FourStroke | 100 Hour Maintenance Service |
This kit does NOT include engine oil or gear lube.
Some customers prefer to choose their own oil type and viscosity depending on boating conditions and performance requirements.
If you prefer a complete maintenance package with Mercury 10W30 Full Synthetic Oil and Mercury Extreme Performance 85W90 Gear Lube, order the complete kit here:
Mercury 500R 100 Hour Service Kit with Oil & Gear Lube
What is Included
| Qty | Part | Description |
|---|---|---|
| 1 | 8M0123025 | OEM Mercury Oil Filter |
| 2 | 8M0204693 | Lower Unit Drain Plug Seals |
| 1 | 8M0166596 | OEM Mercury Fuel Filter |
Recommended Engine Oil
Mercury Racing 500R engines use approximately 7 quarts or 2 gallons of engine oil depending on fill method and service procedure.
| Oil Type | Size | Part Number |
|---|---|---|
| Mercury 10W30 Full Synthetic | Gallon | 8M0173224 |
| Mercury 10W30 Full Synthetic | Quart | 8M0173223 |
| Mercury 10W30 MRX Racing Oil | Gallon | 8M0169265 |
Recommended Gear Lube
Mercury Racing 500R lower units use approximately 1 quart of gear lube.
| Gear Lube | Part Number |
|---|---|
| Mercury Extreme Performance Gear Lube 85W90 | 8M0111677 |
Related 500R Service Kits
500R 300 Hour Service Kit
Complete 300 hour maintenance kit for Mercury Racing 500R outboards. Oil and gear lube sold separately.
View Product
500R 300 Hour Kit With Oil & Gear Lube
Complete Mercury Racing 500R 300 hour maintenance package with oil and gear lube included.
View Product500R Anodes & Corrosion Protection
| Qty Used | Anode | Part Number |
|---|---|---|
| 1 | Trim Manifold Anode | 8M0218976 |
| 2 | Trim Block Anode | 8M0204939 |
| 1 | Trim Steering Plate Anode | 38021 |
| 1 | Lower Unit Anode | 8M0137814 |
Key Features and Benefits
- Designed for Mercury Racing 500R V8 4.6L outboards
- Includes genuine Mercury filters and drain plug seals
- Perfect for scheduled 100 hour maintenance
- Supports maximum performance and reliability
- Allows customers to choose their preferred oil option
- Compatible with Mercury Full Synthetic and MRX Racing oils
- Helps maintain warranty-compliant service intervals
Part Details
- Part Number: MER500R-100
- Application: Mercury Racing 500R
- Engine: V8 4.6L FourStroke
- Service Interval: 100 Hour
- Oil Included: No
- Gear Lube Included: No
- Recommended Oil Capacity: 7 Quarts / 2 Gallons
- Recommended Gear Lube Capacity: 1 Quart
FAQ
What engines does this kit fit?
This kit fits Mercury Racing 500R V8 4.6L FourStroke outboards.
Does this kit include engine oil?
No. This version does not include oil or gear lube so customers can choose their preferred fluids.
Is there a version with oil included?
Yes. The MER500R-100L version includes Mercury 10W30 Full Synthetic oil and Extreme Performance 85W90 gear lube.
What oil is recommended for the Mercury 500R?
Mercury recommends either 10W30 Full Synthetic oil or Mercury 10W30 MRX Racing Oil.
How much gear lube does the 500R use?
The Mercury Racing 500R lower unit uses approximately 1 quart of gear lube.
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.
- Products must be new, unused, and in original packaging.
- Return authorization required before return shipment.
Searchable Terms
MER500R-100, Mercury 500R service kit, Mercury Racing 500R maintenance, Mercury 500R oil filter, 8M0123025, 8M0166596, 8M0204693, Mercury Racing 500R oil change, Mercury 500R 100 hour kit, Mercury Racing V8 service kit, Mercury 500R fuel filter, Mercury Racing oil change kit, Mercury 500R lower unit service
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