Perform scheduled maintenance on compatible Mercury FourStroke outboards with the genuine Mercury Marine 300-Hour Maintenance Kit (8M0227355). This OEM kit is designed for 8 HP and 9.9 HP EFI two-cylinder outboard engines equipped with the Command Thrust gearcase, with serial numbers 1R281445 and higher. It is also listed for select 6 HP EFI 209 cc two-cylinder models, serial number 1R363055 and higher, and certain 9.9 HP EFI ProKicker applications.
Features
- Genuine Mercury Marine maintenance components for a scheduled 300-hour outboard service.
- Specific to Command Thrust gearcase applications; not interchangeable with the standard-gearcase kit.
- Helps maintain cooling system operation, fuel delivery, corrosion protection and reliable starting.
- Convenient service assortment reduces the need to source each replacement part individually.
Kit Components
Includes service parts such as:
- Fuel filter and sealing washer
- Two spark plugs
- Thermostat and gaskets
- Water-pump impeller and associated repair components
- Gearcase drain plug seals
- Anodes and additional seals or gaskets required for the applicable service kit
Specifications
- Brand: Mercury Marine
- Manufacturer part number: 8M0227355
- UPC: 678633205385
- Maintenance interval: 300 hours
- Primary fitment: Mercury 8/9.9 HP EFI FourStroke Command Thrust (2-cylinder, 209 cc)
- Primary serial-number range: 1R281445 and higher
- Other listed fitments: Select 6 HP EFI 209 cc (1R363055 and higher) and compatible 9.9 HP ProKicker models
- Gearcase: Command Thrust
Important: Engine oil and gearcase lubricant are sold separately. Verify your engine model, serial number and gearcase style before ordering. Kit contents or individual component part numbers may be revised by Mercury.
