Flush Port Quick Connect for Mercury Outboards

The Flush Port Quick Connect for Mercury outboards makes flushing your Mercury outboards easier, faster, and more securely. Designed to replace factory flush ports, this kit installs in minutes and gives you a permanent, leak-free connection built to withstand the toughest marine environments.

Crafted from durable, corrosion-resistant materials, including 316 stainless steel and high-grade polymers, the Flush Port Quick Connect is built for life around saltwater. With the included 90-degree elbow fitting, you’ll avoid hose kinks and ensure maximum water flow for a more complete, effective flush every time.

Whether you're flushing with your Flushmaster system or a standard water hose, this upgrade means no more stripped threads, no more frustration, and no more excuses — just a faster, easier way to protect your engine and extend its life.

NOTE: The opening at the top of the Mercury Quick Connect cap serves as an indicator of check valve failure and is required by the OEM

Features:

• Replaces OEM Flush Port
• Marine-Grade & 316 SS Construction
• Leak-Free Performance
• Easy To Install
• Hassle-Free and Saves Time

What's Included?

• (1) Mercury Male Quick Connect
• (1) Female Hose Quick Connect (Black)
• (1) 90-degree Elbow (goes inside the cowling to ensure no kinks are in the Mercury flush hose; use if necessary)
• (1) Wrench for Tightening
• (1) Stainless Steel Hose Clamp

Product Installation:

• Remove the OEM Mercury flush port plug.
• Unscrew the Mercury OEM plug from the 3/4" female hose outlet.
• Remove the lanyard from the engine hose.
• Thread your new Flushmaster Flush Port Quick Connect to the flush port.
• Reinstall the Flushmaster Flush Port Quick Connect into the engine cowling.
• Give it a 1/4" turn clockwise to lock it in place.

Helpful Tip: Remove the cowling and inspect the flush hose for any kinks. If a kink exists, replace the Mercury 3/4" female hose outlet with the provided elbow. Orient the elbow inside the cowling to ensure no kinks are in the Mercury flush hose. (To help insert the 90-degree elbow, lube the barb or use a heat gun on the flush hose.)

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Quick Guide (pdf)