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Mercury 300-Hour Maintenance Kit - 8M0120839 — image 1EQUIPMENT
Mercury
Watersports Accessories

Mercury 300-Hour Maintenance Kit - 8M0120839

The Mercury 8M0120839 maintenance kit groups the replacement components used for a 300-hour service on compatible Mercury 25–30 hp FourStroke outboards. Check the engine serial number before ordering: Mercury identifies the applicable range as 0R106999 through 1R162636. Oil and fuel filters Thermostat and thermostat gaskets Three spark plugs.

Spare Parts Outboard MotorMercury
USD reference price

$277.99

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1

USD retail reference price. Configuration choices, supplier stock and the final selling price require confirmation before ordering.

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CollectionWatersports Accessories
Brand / supplier SKUMercury / WSE0575257
Shipping & returnsTerms pending supplier confirmation
WarrantyNot yet confirmed

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The Mercury 8M0120839 maintenance kit groups the replacement components used for a 300-hour service on compatible Mercury 25–30 hp FourStroke outboards. Check the engine serial number before ordering: Mercury identifies the applicable range as 0R106999 through 1R162636.

Service Components

  • Oil and fuel filters
  • Thermostat and thermostat gaskets
  • Three spark plugs
  • Water-pump impeller kit and anode components
  • Oil-drain and gear-case seals

Engine oil and gear lubricant are purchased separately. Follow the maintenance schedule and installation instructions in the engine owner's manual.

Browse the model details, source-listed specifications and configuration options below. Confirm supplier stock and package contents before ordering.

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