Mercury 8M0120838 15-20hp FourStroke 300 Hour Maintenance Kit

Mercury 8M0120838 15-20hp FourStroke 300 Hour Maintenance Kit

Mercury 8M0120838 300-Hour Maintenance Kit is designed for select Mercury 15–20hp FourStroke outboards. This all-in-one service kit provides the key replacement parts needed to complete scheduled 300-hour maintenance in a single package, helping simplify routine engine care.

Engineered to Mercury Marine OEM specifications, this kit includes essential service components such as filters, seals, spark plugs, and cooling system parts. It is intended to support proper engine performance, reliability, and longevity when performing scheduled maintenance.

Key Features

• Fits Mercury 15–20hp FourStroke outboards (serial 0R235949–0R833819)
• Complete 300-hour service kit in one convenient package
• Includes oil filter, fuel filter, oil drain seal, and gear case seals
• Includes thermostat and thermostat gaskets
• Includes 3 spark plugs
• Includes water pump impeller kit and unit anode
• Designed for periodic maintenance using common shop tools
• Built to Mercury OEM specifications for performance and reliability

Kit Contains:

• Oil Filter
• Oil Drain Plug Seal
• Lower Unit Anode
• Belt
• High Pressure Fuel Filter
• Gearcase Drain Plug Seal
• Power Trim Anode
• Thermostat Kit
• Low Pressure Fuel Filter
• Spark Plugs
• Impeller Kit

Application:

• 15 HP Carb 2 CYL JCI - [0R558208 THRU 0R833819]
• 15 HP Carb 2 CYL - [0R833819 THRU 0R833819]
• 10 HP Carb 2 CYL - [0R575531 THRU 0R833819]
• 20 HP Carb 2 CYL - [0R235168 THRU 0R833819]

To help ensure proper fitment, please confirm compatibility with your engine model using our Parts Finder & Schematics Guide before placing your order. No returns or cancellations once processed.

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