Flushmaster Flush Port Quick Connect for Mercury Outboards – SM-FMQCM | Easy Engine Flushing Adapter

Make engine maintenance faster and easier with the Flushmaster Flush Port Quick Connect for Mercury Outboards (SM-FMQCM). Designed specifically for Mercury outboard engines, this convenient adapter allows you to quickly connect a standard garden hose to your engine’s flush port—eliminating hassle and saving time after every trip.

Built for reliability in marine environments, this quick connect fitting provides a secure, leak-resistant connection while ensuring consistent water flow for effective flushing. Regular flushing helps remove salt, sand, and debris, protecting your engine from corrosion and extending its lifespan.

Perfect for boat owners who want a simple upgrade, the Flushmaster quick connect system transforms routine maintenance into a fast, tool-free process—ideal for both freshwater and saltwater use.

Why Choose the Flushmaster Quick Connect?

This adapter is designed to streamline one of the most important maintenance tasks for outboard engines. With its plug-and-play convenience, you can flush your engine in seconds without dealing with threaded connections or awkward fittings.

Key Performance Features

• Permanent OEM Replacement: Directly replaces the standard plastic Mercury flush plug, providing a fixed, professional-grade connection point that stays on the engine while underway.

• Leak-Free Engineering: Features a double O-ring design and high-grade 316 stainless steel internal springs to ensure a rock-solid seal that won't leak or air-lock your cooling system.

• UV & Corrosion Resistant: Constructed from marine-grade, UV-stable polymers specifically tested to withstand constant saltwater exposure and harsh sun without becoming brittle.

• Safety Indicator Hole: The locking cap includes a small integrated weep hole, mirroring the original Mercury design to act as a visual indicator if the engine's internal check valve fails.

• Secured Locking Cap: Uses a twist-to-lock mechanism that prevents the cap from vibrating loose or popping off even at high speeds or in rough water.

What’s in the Box?

• (1) Mercury Male Quick Connect Fitting

• (1) Female Hose Quick Connect Adapter (Black)

• (1) 90-Degree Elbow Fitting (to prevent hose kinks inside the cowling)

• (1) Custom Wrench for secure tightening

• (1) Stainless Steel Hose Clamp

Specifications

• Brand: Flushmaster

• Model: SM-FMQCM

• Product Type: Flush port quick connect adapter

• Compatibility: Mercury outboard engines

• Connection Type: Quick connect (garden hose compatible)

• Application: Marine engine flushing and maintenance

Ideal Applications

• Routine flushing after saltwater use

• Preventative maintenance for outboard engines

• Quick-connect upgrades for Mercury motors

• Boat owners seeking faster, easier maintenance

How It Works

Attach the quick connect fitting to your Mercury engine’s flush port. Snap your garden hose into place, turn on the water, and flush your engine quickly and efficiently—no threading or tools required.