300 Hour Maintenance Kit MerCruiser 5.0L, 5.7L and 6.2L MPI Engine with Bravo Sterndrive

Mercury 300 Hour Maintenance Kit MerCruiser 5.0L, 5.7L and 6.2L MPI Engine with Bravo Sterndrive

The Mercury 8M0147069 300 Hour Maintenance Kit brings together every component required for a complete 300-hour scheduled service on MerCruiser 5.0L, 5.7L, and 6.2L MPI engines equipped with Bravo Sterndrives (2002 and newer). Built to the same engineering standards as the original parts installed at the factory, this genuine OEM kit ensures proper fitment, reliable performance, and compatibility that aftermarket alternatives often cannot match.

Each item in the kit is purpose-designed for the MerCruiser MPI platform. Fresh spark plugs restore sharp throttle response, especially when accelerating onto plane or pushing through headwinds. A new seawater pump impeller restores healthy cooling flow, helping the engine run cool and steady during extended cruises at higher RPMs. The serpentine belt replacement keeps the alternator, raw-water pump, and all driven accessories spinning tightly and smoothly. High-pleat oil and fuel filters handle quiet background protection, blocking moisture and grit from reaching injectors, internal passages, and gearcase components that can slowly degrade performance over time.

All components are engineered to perform in both freshwater and saltwater environments, and each piece installs cleanly using standard tools with no guesswork or odd fittings. Compatibility extends to sport boats, cruisers, bowriders, coastal fishing boats, and runabouts powered by these MPI platforms.

Key Features

• Complete 300-hour service kit for MerCruiser 5.0L, 5.7L, and 6.2L MPI engines with Bravo Sterndrive (2002 and newer)
• Includes oil filter, fuel filter, serpentine belt, spark plugs, thermostat, thermostat gasket, gearcase drain seals, and seawater pump impeller kit
• PCV valve and IAC filter included where applicable
• High-pleat filter media delivers superior debris and water control
• Heavy-duty electroplated housings resist corrosion season after season
• Exact OEM fit for predictable, dependable installation
• Suitable for freshwater and saltwater environments
• Genuine Mercury Precision Parts backed by decades of engineering expertise