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Mercury 40-60HP 300 Hour Kit BigFoot / Command Thrust
| Quantity | Price |
| 1 | 249.99 |
OEM Mercury 40-60HP 300 Hour Service Kit
Mercury 40-60HP 300 Hour Kit BigFoot / Command Thrust
The Mercury 8M0090559 300 Hour Service Kit is for compatible Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with BigFoot or Command Thrust gearcases.
This 300 hour maintenance kit includes the service components commonly replaced during extended scheduled maintenance. Oil and gear lube are sold separately.
Compatible Applications
| Brand | Horsepower | Engine Type | Gearcase Type | Serial Range |
|---|---|---|---|---|
| Mercury | 40HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
| Mercury | 50HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
| Mercury | 60HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
This Mercury 300 hour service kit fits Mercury 40-60HP FourStroke EFI outboards with serial numbers 1C000001 and higher and BigFoot or Command Thrust gearcases only.
If your motor has a standard gearcase, use the standard gearcase 300 hour kit linked below instead.
Prefer to Buy the Kit with Oil & Gear Lube?
Mercury 300 Hour Kit With Oil & Gear Lube - BigFoot / Command Thrust
Prefer a complete maintenance package? Order the Mercury 8M0090559-L 300 Hour Service Kit with engine oil and gear lube included.
View Complete KitOil Capacity & Recommended Oil Options
Mercury 40-60HP FourStroke EFI engines use approximately 4 quarts of engine oil, or 1 gallon.
| Oil Type | Product | Quantity Required |
|---|---|---|
| Mercury 10W30 | Mercury 10W30 Engine Oil - Quart | 4 quarts |
| Mercury 10W30 | Mercury 10W30 Engine Oil - Gallon | 1 gallon |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Quart | 4 quarts |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Gallon | 1 gallon |
| Mercury 10W30 Full Synthetic | Mercury 10W30 Full Synthetic - Gallon | 1 gallon |
| Mercury 25W40 | Mercury 25W40 Engine Oil - Quart | 4 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Quart | 4 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Gallon | 1 gallon |
Recommended Gear Lube
Gear Lube Quantity:
BigFoot and Command Thrust gearcases may require more gear lube than standard gearcases.
Always verify the fill quantity in your Mercury owner's manual before servicing.
| Gear Lube Type | Product |
|---|---|
| Mercury High Performance Gear Lube | Mercury High Performance Gear Lube - Quart |
| Mercury Premium Gear Lube 80W90 | Mercury Premium Gear Lube 80W90 - Quart |
Standard Gearcase 300 Hour Kits
300 Hour Kit - Standard Gearcase
Use this 300 hour kit for compatible Mercury 40-60HP EFI models with standard gearcases. Oil and gear lube sold separately.
View Product
300 Hour Kit With Oil - Standard Gearcase
Complete 300 hour kit with 10W30 oil and gear lube for compatible standard gearcase models.
View ProductWhat This Service Kit is Used For
The Mercury 8M0090559 service kit is used for 300 hour maintenance on compatible Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with BigFoot or Command Thrust gearcases.
A 300 hour service is a more complete maintenance interval than a basic 100 hour service and helps support fuel system performance, cooling system reliability, ignition performance, lubrication service, and long-term outboard protection.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
- For serial numbers 1C000001 and higher
- For BigFoot and Command Thrust gearcase models
- Oil and gear lube sold separately
- Kit with oil and gear lube available separately
- Standard gearcase 300 hour kits linked above
Service Kit Details
- Part Number: 8M0090559
- Application: Mercury 40-60HP FourStroke EFI Outboards
- Serial Range: 1C000001 & Higher
- Gearcase Type: BigFoot / Command Thrust
- Service Interval: 300 Hour Maintenance
- Oil and Gear Lube: Sold Separately
FAQ
What engines does this 300 hour kit fit?
This kit fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
with serial numbers 1C000001 and higher equipped with BigFoot or
Command Thrust gearcases.
Does this kit fit standard gearcase models?
No. This kit is for BigFoot and Command Thrust gearcase models.
Standard gearcase 300 hour kits are linked above.
Does this kit include oil and gear lube?
Oil and gear lube are sold separately.
Is there a version with oil and gear lube included?
Yes. The Mercury 8M0090559-L kit with oil and gear lube is linked above.
How do I know which 300 hour kit to order?
Choose this kit for BigFoot or Command Thrust gearcases. Choose the
standard gearcase kit if your motor does not have a BigFoot or Command
Thrust gearcase.
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
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