Mercury – Power Tune Internal Engine Cleaner | Engine Care Series | Spray Formula | 858080K03
Mercury – Power Tune Internal Engine Cleaner | Engine Care Series | Spray Formula | 858080K03
Mercury – Power Tune Internal Engine Cleaner | Engine Care Series | Spray Formula | 858080K03 is backordered and will ship as soon as it is back in stock.
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Description
Description
There’s a certain peace you feel when you fire up your engine and know it’s breathing clean and strong. Anyone who spends real time on the water understands that confidence—it’s not flashy, it’s earned. Mercury Power Tune Internal Engine Cleaner is one of those quiet helpers that keeps things running the way they should. When you’ve got miles of open water ahead or you’re easing back into the marina at dusk, it’s nice to trust that your Mercury Marine part is doing its job without fanfare.
• Cleans internal engine components by removing harmful carbon, gum, and varnish.
• Crafted with a powerful spray formula designed for deep penetration.
• Smooth, consistent application from a twelve-ounce spray can.
• Safe for two-stroke and four-stroke carbureted or fuel-injected gasoline engines.
• Developed with Mercury Marine engineering for dependable results.
• Works with a wide range of Mercury outboards from portable models up to high-performance engines
• Suitable for Mercury sterndrives and inboard gasoline systems
• Helpful for engines on fishing boats, pontoons, offshore center consoles, ski boats, and cruisers
• Also useful for small engines used around the home or shop
Using this cleaner feels a bit like waking an engine up after a long nap. The throttle response tightens, the idle smooths out, and the engine seems to breathe a little easier. Power Tune helps clear carbon from areas you can’t reach with a wrench, restoring proper airflow and fuel delivery. That means fewer bog-downs, quicker starts, and a more predictable feel when you shift into gear.
Choosing an original Mercury Marine part means you’re buying something built for your exact engine—not a generic substitute. It’s engineered to protect the investment sitting on your transom, and it saves you the hassle of trial-and-error products that may or may not deliver. With OEM parts, you get predictable results, easier upkeep, and long-term value. It’s the kind of practical choice seasoned boaters make because they’ve seen what happens when you cut corners.
It works with nearly all Mercury gasoline engines, from small outboards to larger four-stroke and two-stroke models, including carbureted and fuel-injected systems.
It’s formulated specifically for Mercury engines and tested under real-world marine conditions, so you know the cleaning strength and safety meet Mercury Marine standards.
If your gasoline engine is showing signs of carbon buildup, slow response, or rough running, this cleaner is the appropriate match. The part number 858080K03 confirms you’re using the genuine version.
Yes. It performs reliably in either environment and helps maintain internal cleanliness regardless of where you run.
Absolutely. The spray design makes it easy, and most owners feel comfortable applying it during routine maintenance.




