3.4L V6 FourStroke 300 Hour Maintenance Kit

Mercury Marine 3.4L V6 FourStroke 300 Hour Maintenance Kit

The Mercury Marine 8M0149930 300-Hour Maintenance Kit contains all the essential replacement parts needed to complete routine 300-hour service on compatible Mercury 3.4L V6 FourStroke outboards (serial number 2B529482 and higher). Packaged in one convenient box, this genuine Mercury Precision Parts kit eliminates the need to order components separately, simplifying scheduled maintenance and helping keep your engine running longer and stronger.

This kit is compatible with the following Mercury applications (serial number 2B529482 and up): Mercury 175 HP 3.4L V6 FourStroke, Mercury 200 HP 3.4L V6 FourStroke, Mercury 225 HP 3.4L V6 FourStroke, Mercury 175 HP 3.4L V6 Pro XS, and Mercury 200 HP 3.4L V6 SeaPro. Always verify fitment using your engine model, horsepower, serial number, service schedule, or parts diagram before ordering.

Periodic maintenance can be completed using common shop tools. Follow your owner's manual for recommended service intervals, fluid specifications, torque values, and replacement procedures. Mercury 4-stroke oil and Mercury High Performance Gear Lube are sold separately.

Produced by Mercury Marine to stringent OEM specifications to maximize the performance and reliability of your Mercury outboard. This is a genuine Mercury Marine factory OEM part, not aftermarket.

Key Features

• Complete selection of required 300-hour service replacement items in one box — no need to order separate parts
• Includes oil filter, fuel filter, 2 oil drain seals, spark plugs, thermostat, alternator belt, water pump repair kit, and anodes
• Designed for Mercury 3.4L V6 FourStroke outboards with serial number 2B529482 and higher
• Compatible with 175–225 HP FourStroke, Pro XS, and SeaPro variants
• Periodic maintenance is easy using common shop tools
• Produced to Mercury Marine OEM specifications for maximum performance
• Genuine Mercury Precision Parts — not aftermarket