Mercury 8M0120839 F25/30HP 4-Stroke 300 Hour Service Kit

Mercury 8M0120839 300-Hour Service Kit - 25/30 HP FourStroke

The Mercury 8M0120839 300-Hour Service Kit contains the key replacement parts needed to complete routine 300-hour maintenance on compatible Mercury 25 HP and 30 HP FourStroke outboards. This genuine Mercury Precision Parts kit is designed for select 25-30 HP FourStroke applications with serial number 0R106999 through 1R162636 where specified.

Packaged in one convenient box, this 300-hour maintenance kit helps reduce the need to order common service parts separately. Following the maintenance schedule in your owner’s manual helps keep your engine running longer and stronger while protecting your investment in your Mercury outboard.

Product Features:

• Genuine Mercury 300-hour service kit
• Designed for compatible 25 HP and 30 HP FourStroke outboards
• Complete selection of required 300-hour service replacement items in one box
• Helps simplify periodic maintenance and service
• Can be serviced with common shop tools
• Produced to Mercury Marine OEM specifications

Product Details:

• Brand: Mercury
• Manufacturer Part Number: 8M0120839
• Part Type: 300-Hour Maintenance Service Kit
• Application: Select Mercury 25-30 HP FourStroke outboards
• Serial Number Range: 0R106999 through 1R162636 where specified

Kit Contains:

• Oil filter
• Oil drain plug seal
• Gearcase drain plug seal
• Low-pressure fuel filter
• High-pressure fuel filter
• Thermostat kit with thermostat gaskets
• Three spark plugs
• Water pump impeller kit
• Lower unit anode
• Power trim anode
• Belt

Fits Select Mercury Applications:

• 25 HP EFI 3-cylinder FourStroke, serial number 0R106999 and up where specified
• 25 HP EFI Jet 3-cylinder FourStroke, serial number 0R165086 and up where specified
• 30 HP EFI 3-cylinder FourStroke, serial number 0R106999 and up where specified
• 25 HP Carb SeaPro, serial number 0R051710 and up where specified

Service Note: Follow your Mercury owner’s manual for the recommended 300-hour service interval, fluid specifications, torque values, and replacement procedures for your specific outboard.

Fitment Note: Maintenance kit fitment should be verified by outboard model, horsepower, fuel system, serial number, service schedule, or parts diagram before ordering. Please confirm this kit is correct for your Mercury 25/30 HP FourStroke outboard before purchasing.

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