Mercury 12612T2 Outboard Flushing Attachment | 4–15 HP
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Mercury MerCruiser Quicksilver 12612T2 is a genuine OEM flushing kit / flushing attachment for select small Mercury and Mariner outboards. Current Mercury and dealer references identify this part as a flushing attachment that connects to a fresh water source, helps flush cooling passages after saltwater or silty use, and allows the engine to run at idle speeds during flushing.
Key Features
- Genuine Mercury Marine OEM part number 12612T2.
- Current Mercury references describe the matching Quicksilver version as a flushing attachment for select Mercury and Mariner outboards.
- Designed to connect to a standard garden hose / fresh water source for engine flushing.
- Allows for running at idle speeds during use.
- Dealer references show 12612Q2 as the alternate current part number associated with 12612T2.
Engine Compatibility
The strongest supportable fitment for 12612T2 is select Mercury/Mariner 4-15 HP 2-stroke outboards, 4/5/6 HP FourStroke outboards, and 8/9.9/15 HP FourStroke (323cc) models with standard gearcase. Current dealer references also describe it for select 4-15 HP small outboard applications where the flushing attachment fits the standard gearcase water-pickup arrangement.
Serial Number Fitment Notice
Verify fitment by exact engine serial number, horsepower, and gearcase style before ordering. With 12612T2, the key check is whether the outboard uses the compatible standard gearcase / water-pickup layout, because similar small Mercury outboards can use different flushing solutions depending on generation and lower-unit design.
When This Part Needs Replacement
Replace the flushing kit when the attachment no longer seals correctly, is cracked, hardened, damaged, or no longer stays positioned properly over the water intake area. Because this part is used to deliver fresh water through the cooling system during flushing, a good seal and proper fit matter for effective cleaning and idle-run flushing. This replacement guidance is a practical service inference based on the product's documented flushing role.
Installation Notes
Connect the kit to a fresh water source and use it only on the compatible small Mercury / Mariner outboards listed for this attachment. Current references indicate that this flushing kit is intended for engines where it can be used to flush the cooling system and run at idle speeds during service. Confirm correct fit on the gearcase before turning on the water and starting the engine.
Alternate/Superseded Part Numbers
Current dealer references show 12612Q2 as the alternate or newer related part number connected to 12612T2.
Parts Desk Insight
The easy mistake with a flushing kit like this is ordering only by horsepower. For 12612T2, the better match is the exact small-outboard model plus standard gearcase configuration, because that matters more than the generic "flushing kit" name when you want the attachment to seal and work properly.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock OEM parts: ship same or next business day.
Other in-stock products: ship within 1–3 business days.
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.