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Flush Port Quick Connect kit for Yamaha: two female adapters and one double O-ring male fitting
close up of flush port quick connect for yamaha outboards
person connecting flush port on yamaha outboard
flush hose connected to yamaha outboard flush port quick connect
OEM versus Flush Port Quick Connect for Yamaha
flushmaster controller housed in cradle mounted to dock piling flushing dual yamaha outboards

Flush Port Quick Connect for Yamaha

One engine Quick Connect kit. See What’s Included for the brand-specific supplied parts.
SOLD SEPARATELY: Controller, garden hose and mounting accessories shown in use.

Product Patented

Flush Port Quick Connect for Yamaha

SM-FMQCY

Connect at the engine. Make your Yamaha flush connection easier to use.

  • A permanent upgrade for compatible factory flush connections.
  • One kit per engine; confirm your model and flush-port style.
  • Use a garden hose or add a Flushmaster Controller for automatic timing.
$49.99
What’s included?
  • (2) Female Quick Connect Adapters
  • (1) Male Quick Connect (Double O-Ring to ensure no leaks)
Will this fit my engine?

Listed application: Yamaha 150–425 hp outboards with the compatible factory flush-port arrangement. Confirm the model, year and actual port before ordering.

Not listed as compatible: Yamaha 50–115 hp or 450 hp; 2024–2025 models of 115 hp or less. For other years and models, contact Flushmaster before ordering.

Color
Color: Black

Start with one kit per engine. The kit includes its female hose adapter(s). A Controller adds automatic timing and is optional; a Reroute is a different connection option.

Add the Essentials

Your Quick Connect works with a garden hose. Add a Controller for automatic flushing, then choose any extras you need.

For your Controller Optional accessories

Selected extras$0.00

Select only what you need. Extras join the same cart.

Free Domestic Shipping

30-Day Returns · 1-Year Warranty

Fast, Reliable Customer Support

Key Features

Easy Install
Easy Install
Leak-Free
Leak-Free
Marine Grade
Marine Grade

FLUSH PORT QUICK CONNECTS

Connect at the engine. Keep your routine simple.

Your engine keeps its own flush connection. The Quick Connect makes that connection easier to use; choose one kit for each engine and confirm fitment before ordering.

Watch the installation video for your engine brand. Confirm model and fit before installation.

Install the correct fitting.

Check your engine model, year and flush-port arrangement. Follow the installation guide for the initial fitting installation.

Connect and flush.

Attach a compatible freshwater hose with the included female adapter. Use the engine manufacturer’s required flush duration and procedure.

Disconnect and secure.

Turn off the water before removing the flushing hose.

Reconnect the engine’s flush line to its secured position using the Quick Connect bridge, as shown in the installation guide.

Yamaha Installation

MANUAL FLUSHING

Use your garden hose.

Attach the hose using the supplied female adapter. Flush one engine at a time, turning the water off before moving the hose to the next engine. A Controller is optional.

OPTIONAL UPGRADE

Let the Controller handle the sequence.

Keep an outlet hose connected to each engine. A Flushmaster Controller supplies one selected engine at a time, then advances and shuts off automatically. Choose 2-Outlet for 1–2 engines or 4-Outlet for 1–4.

Compare Controllers

Quick hookup does not shorten the required flush. Follow your engine manufacturer’s instructions for duration, engine position and engine-off requirements.

Eliminate the hassle of connecting.

Built for Yamaha connections

Upgrade the connection you use after every trip. The Flush Port Quick Connect for Yamaha stays installed so routine hookup takes fewer steps. Choose by engine application, then confirm model-specific fitment.

A quicker hose connection

Once the fitting is installed, use the female adapter to connect the flushing hose without repeatedly threading the hose onto the engine’s flush connection.

One adapter throughout

The included female adapters use a 316 stainless steel internal spring to help resist rust and seizing. They share the connection used across Flushmaster Quick Connect products.

flush port quick connect for yamaha close up

Reconnect when finished

Turn off the water and disconnect the flushing hose. Return the engine’s flush line to its secured position using the Quick Connect bridge, following the installation guide before operating the engine.

triple yamaha boat leaving wake

Manual or automatic flushing

Use a garden hose for a manual flush. Add a Controller to time and sequence multiple engines while their hoses stay connected. Follow the engine manufacturer’s required flush duration.

Check the installation first

Review the Yamaha installation guide and check your engine’s actual flush-port arrangement. Contact us with the brand, model, year and a clear port photo if you need help choosing.

Designed for Yamaha Outboards

Flush Port Quick Connect for Yamaha and Honda labeled render
What’s Included
  • (2) Female Quick Connect Adapters
  • (1) Male Quick Connect (Double O-Ring to ensure no leaks)
Specs
  • Application: compatible Yamaha engine flush connections; confirm model-specific fitment.
  • Connection: Flushmaster Quick Connect; double O-ring male fitting.
  • Female adapter: 316 stainless steel internal spring.
  • Use: direct garden-hose flushing or an optional Flushmaster Controller.
  • Quantity: one kit for each engine connection you are upgrading.
Compatibility

Listed application: Yamaha 150–425 hp outboards with the compatible factory flush-port arrangement. Confirm the model, year and actual port before ordering.

Not listed as compatible: Yamaha 50–115 hp or 450 hp; 2024–2025 models of 115 hp or less. For other years and models, contact Flushmaster before ordering.

Installation

Yamaha Installation
Load video: Presenter discussing Yamaha outboard flush connections at the dock

Why Yamaha Owners Upgrade Their Flush Port

See the engine connection in use. The Quick Connect stays installed; the hose connects when it is time to flush. Follow the written installation guide and your engine manufacturer’s procedure.

Quick Connect Questions, Answered

Will this fit my Yamaha?

Choose by engine application and confirm the model, year and actual flush-port style in Compatibility below. Horsepower or brand alone is not a fit guarantee. Send us an engine-port photo if you are unsure.

Do I need a Flushmaster Controller?

No. Connect your garden hose with the included female adapter and flush one engine at a time. A Controller is an optional upgrade that handles the timing, outlet changes and water shutoff.

How many kits do I need?

Order one kit per engine connection: one for a single, two for twins, three for triples or four for quads. Check What’s Included for the supplied adapters and brand-specific parts.

What do I do after flushing?

Turn off the water before disconnecting the hose. Reconnect the engine flush line to its secured position with the Quick Connect bridge, following the product and engine instructions.

Will the female adapter need maintenance?

The 316 stainless steel internal spring helps resist corrosion. Rinse with fresh water and inspect the adapters and O-rings regularly. Corrosion resistance does not make any marine fitting maintenance-free.

Didn’t find your answer?

Tell us which product you are using and what you want to connect. For engine fitment, include your brand, model, year and a clear flush-port photo.