Seachoice 18411 Outboard Flush Kit — Mercury, Mariner, Yamaha & Suzuki
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Protect Your Outboard After Every Saltwater Run
The Seachoice 18411 Outboard Flush Kit makes post-saltwater flushing fast, simple, and consistent. The permanent slide valve mounts directly to your engine and stays in place, so flushing is always one quick-connect away — no earmuffs to hunt for, no hose juggling. A reliable O-ring seal ensures a secure, leak-free connection every time you hook up.
What's Included
- Slide valve (mounts permanently to engine)
- Quick connect fitting
Key Features
- Permanent slide valve — stays on the engine so it's always ready when you are
- Quick-connect design — attaches and detaches in seconds with a standard garden hose
- O-ring sealed — ensures a tight, reliable fit with no leaks during flushing
- Broad compatibility — fits most popular outboard engines from Mercury, Mariner, Yamaha, and Suzuki
Compatibility
Fits most Mercury, Mariner, Yamaha, and Suzuki outboard engines. For OMC outboard engines, see the Seachoice 18401 Outboard Flush Kit for OMC. For a universal earmuff-style flusher, consider the Seachoice ProFlo Universal Round Motor Flusher or the Seachoice ProFlo Universal Rectangular Motor Flusher.
Parts Desk Insights
This kit is best used as a permanent fixture on any outboard that sees regular saltwater use. The biggest advantage over earmuff-style flushers is that the slide valve is always mounted and ready — removing the excuse to skip a flush after a short trip. Best practice is to flush for a minimum of 5–10 minutes at idle after every saltwater outing. If you're setting up a new outboard or replacing a worn slide valve, this is the kit to reach for.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.