300 Hour Service Kit with Oil
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Compatible Applications
| Brand | Horsepower | Engine Type | Application Notes |
|---|---|---|---|
| Mercury | 40HP–60HP | 4-Cylinder EFI FourStroke | BigFoot / Command Thrust gearcase; serial 1C000001+ |
What is Included
| Qty | Included Part | Part Number |
|---|---|---|
| 1 | Mercury 300-Hour Maintenance Kit | 8M0090559 |
| — | — Oil Filter, Low- and High-Pressure Fuel Filters | In 8M0090559 |
| 4 | — Spark Plugs | In 8M0090559 |
| — | — Thermostat with Gaskets, Water Impeller Kit | In 8M0090559 |
| — | — Power Trim and Lower Unit Anodes, Seals | In 8M0090559 |
| — | Mercury 10W-30 4-Stroke Engine Oil | Included |
| — | Mercury Gear Lube | Included |
What This Kit is Used For
This bundle pairs the genuine Mercury 8M0090559 300-hour maintenance kit with Mercury 10W-30 engine oil and gear lube, giving you everything for the 300-hour service on Mercury 40HP–60HP 4-cylinder EFI FourStroke outboards with BigFoot or Command Thrust gearcases, serial number 1C000001 and higher.
The 300-hour service replaces wear items like the water pump impeller, thermostat, spark plugs, and anodes along with filters, oil, and gear lube.
Key Features and Benefits
- OEM Mercury 300-hour kit plus 10W-30 engine oil and gear lube
- Fits Mercury 40HP–60HP EFI Command Thrust / BigFoot, serial 1C000001+
- Includes water impeller kit, thermostat, spark plugs, and anodes
- Complete 300-hour service in one order
Kit Details
- Kit Part Number: 8M0090559-L
- Base Kit: Mercury 8M0090559
- Service Interval: 300 hours
- Engine Compatibility: Mercury 40–60HP 4-cylinder EFI, Command Thrust / BigFoot, serial 1C000001+
- Oil Weight: 10W-30
- Gear Lube: Included
FAQ
What engines does this kit fit?
This kit fits Mercury 40HP–60HP 4-cylinder EFI FourStroke outboards with BigFoot or Command Thrust gearcases, serial number 1C000001 and higher.
Does this kit include oil and gear lube?
Yes. This version adds Mercury 10W-30 engine oil and gear lube to the 8M0090559 parts kit.
Can I perform this service myself?
Yes. Always follow your owner's manual and verify oil capacity before operation.
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