Mercury – MerCruiser 8.2L MPI 300 Hour Maintenance Kit | Precision Service Kit | Marine-Ready Components | 8M0147071

Overview

Anyone who runs a MerCruiser 8.2L MPI knows there’s a certain moment when you ease the throttle forward and feel the whole boat settle into its rhythm. When everything is right, the engine feels strong, steady and ready for whatever the day brings. That trust does not happen by accident — it comes from taking care of the machine that carries you across open bays, long channels and choppy afternoons. The Mercury Marine part number 8M0147071 300-hour maintenance kit delivers that same confidence, giving you the comfort of knowing your engine is protected before you push off from the dock.

Key Features

• Complete 300-hour service kit for MerCruiser 8.2L Multi Port Injection engines with Bravo sterndrives
• Includes oil filter, fuel filter, gearcase drain seals, spark plugs, thermostat, thermostat gasket, serpentine belt, PCV valve and seawater pump impeller kit
• Premium filtration components with high pleat counts for steady, clean oil and fuel flow
• Heavy-duty electroplated housings designed to resist corrosion over long seasons
• Engineered for factory-level fitment and smooth installation

Engine & Boat Compatibility

• Fits MerCruiser 8.2L MPI gasoline engines (2010 and newer)
• For Bravo sterndrive applications
• Found on cruisers, sport boats, bowriders and performance-oriented runabouts
• Ideal for boaters who want factory-grade service parts in one organized kit

Performance & Practical Benefits

When you rely on a big-block MerCruiser, you want every component behind it to pull its weight. The right spark plug bite, the right filter flow, the right impeller keeping water moving — it all adds up to an engine that feels tight and responsive instead of sluggish or strained. This kit brings those essentials together so you can give your engine the reset it needs after long seasons of heat, vibration and hard use.

Once installed, most boaters notice smoother idle, stronger throttle response and a more predictable transition onto plane. The engine breathes easier with clean filtration, and the new serpentine belt keeps everything running in harmony. Even something as simple as a thermostat and gasket swap can restore steadier temperature control, which you’ll feel on long runs where cooling consistency matters. These parts are built for real-world boating — salt spray, long weekends, long idle stretches — and they hold up with the kind of durability that makes the whole powertrain feel secure.

Why Buy OEM

There’s a reason many boaters stick with genuine Mercury Marine parts, especially for major services. OEM components are built to match the exact tolerances the engine was designed around, which means they fit cleanly and perform the way the factory intended. It is not about brand loyalty — it is about avoiding headaches, saving time and knowing the job is done right the first time. Aftermarket parts may look similar, but they often do not feel the same when you tighten things down. With a Mercury OEM kit, you know what you are getting: reliability, longevity and fewer surprises during the season.

FAQ

Q1: Which Mercury engines does this product fit?

This kit fits MerCruiser 8.2L Multi Port Injection engines paired with Bravo sterndrives from 2010 and newer.

Q2: What makes this part different from aftermarket versions?

Mercury OEM parts match factory tolerances exactly, giving you a smoother fit and more consistent performance over time.

Q3: How can I tell if this is the right kit?

If you’re running an 8.2L MPI with a Bravo sterndrive, this is the correct Mercury Marine part for your 300-hour service interval.

Q4: Is it suitable for saltwater and freshwater use?

Yes, every component in the kit is engineered to withstand both environments with proper care.

Q5: Is installation manageable for most boaters?

If you’re comfortable performing standard engine maintenance, this kit installs cleanly and without surprises thanks to the precise part matching.