MZANNI SWIFTFLUSHER outboard flush kit for MERCURY single motor, quick‑connect garden hose, water‑stop valve

The MZANNI SWIFTFLUSHER is a quick‑connect flushing kit that replaces the OEM Mercury flush plug to make rinsing Verado, Pro XS, FourStroke and SeaPro outboards fast, secure and leak‑resistant.

If you maintain a Mercury outboard from 75–500 HP, the SWIFTFLUSHER provides an easier, more reliable way to flush salt, silt and debris from the cooling passages after each outing. Built from marine‑grade ABS and nylon, this kit swaps into the factory flush port and gives a positive hose connection with a water‑stop valve and spare parts included. It reduces time at the dock and lowers the chance of damaged or stuck factory caps.

How does the SWIFTFLUSHER simplify the flushing routine?

Instead of wrestling with a small factory plug and gasket, the SWIFTFLUSHER installs quickly and accepts a standard garden hose with a quick‑connect adapter. The male/female quick‑connect pair and included wrench let you attach and detach in seconds, so flushing becomes a one‑step task.

• Direct replacement for Mercury OEM flush plug and gasket numbers listed
• Female hose quick‑connect with integrated water‑stop valve
• Wrench and spare parts included for fast installation
• Fits standard 3/4" GHT hose fittings

Will the kit resist corrosion and hold up in saltwater environments?

Yes — components are molded from high‑density ABS and nylon chosen for marine exposure and UV stability. The materials are selected to resist degradation from sun and salt, and the precision engineering minimizes leaks that can cause corrosion over time.

• Marine‑grade ABS and nylon construction
• UV‑resistant formulation for long outdoor life
• Precision fit to OEM port to prevent seepage

Which Mercury engines are compatible with this flush kit?

The SWIFTFLUSHER is designed to replace Mercury flush plugs on Verado, Pro XS, FourStroke and SeaPro series across the 75–500 HP range. It directly substitutes the OEM plug and gasket referenced by Mercury part numbers, so compatibility covers most modern engines in those lines.

• Compatible with Verado, Pro XS, FourStroke, SeaPro engines
• Covers horsepower ratings from 75 HP up to 500 HP
• Replaces OEM plug & gasket: #22‑888958001 & #22‑888957

What comes in the box and how easy is installation?

The kit ships with the male quick‑connect for the engine port, a hose‑side female quick‑connect with a water‑stop valve (for 3/4" GHT), an O‑ring for a watertight seal, a tightening wrench and a spare parts pack. Installation is straightforward: remove the OEM plug, fit the SWIFTFLUSHER with the supplied O‑ring, and use the wrench to secure it — no special tools required.

• Engine male quick‑connect and hose female quick‑connect included
• O‑ring, tightening wrench, and spare parts kit supplied
• Water‑stop valve prevents spills when disconnecting

Who this is for: Boaters who own Mercury outboards and want a faster, more reliable way to flush cooling passages after saltwater or freshwater use will benefit most from the MZANNI SWIFTFLUSHER. It's aimed at recreational boaters, charter operators and anyone who prefers low‑effort maintenance and durable, corrosion‑resistant components. If you value quick dockside service, reduced risk of stuck factory caps, and a positive hose connection engineered for marine conditions, this kit is a practical upgrade.