Mercury MerCruiser Quicksilver Brass Pipe Plug 3/4-14 428611
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Mercury MerCruiser Quicksilver 22-428611 is a brass pipe plug used in select Mercury Marine, MerCruiser, Mariner, Bravo, Alpha, transom, jet-drive, and engine applications. Mercury parts references identify the original part as FITTING, Pipe - Brass (.750-14) and show 22-428611 / 428611 superseding to the current replacement 22-8M0204679 / 8M0204679.
Key Features
- Genuine Mercury / Quicksilver-style pipe plug reference
- Brass construction
- Thread reference: .750-14 / 3/4"-14 pipe thread
- Original Mercury reference: 22-428611
- Current Mercury replacement: 22-8M0204679 / 8M0204679
- Catalog shipping reference: approximately 0.13 lb, 1.00 in. x 1.00 in. x 0.58 in.
Engine Compatibility
This pipe plug is shown across a broad range of Mercury and MerCruiser assemblies, including select Bravo sterndrives, Bravo transom assemblies, R/MR/Alpha One transom assemblies, 3.0L GM 181 I/L4, 4.3L, 5.7L, 6.2L, 8.1L, Mercury Sport Jet, and other Mercury / Mariner applications depending on serial number and assembly location.
Serial Number Fitment Notice
Pipe plug fitment varies by engine, drive, transom assembly, exhaust component, cooling system location, and serial number range. Always confirm fitment using the Mercury or MerCruiser serial number before ordering, especially where older part number 22-428611 has been replaced by 22-8M0204679.
When This Part Needs Replacement
Replace this pipe plug if the original plug is corroded, rounded, leaking, seized, damaged during removal, or no longer sealing properly. A worn or damaged brass pipe plug can cause seepage and may create unnecessary rework during cooling-system, exhaust, transom, or drive service.
Installation Notes
Clean the threaded port before installation and inspect the mating threads for corrosion or damage. Install the plug using the correct thread sealant where specified by the Mercury service manual for the exact application. Do not over-tighten brass pipe plugs, as excessive torque can damage the plug or the threaded housing.
Alternate / Superseded Part Numbers
- 22-428611
- 428611
- 22-8M0204679
- 8M0204679
- 22-42681
- 22-426811
- 22-861187
- Sierra 18-4265
- GLM 21896 / 22032
Parts Desk Insight
This is a small part, but the application range is wide. The safest match is by serial number and the exact diagram location, because the same pipe plug can appear in different Mercury and MerCruiser assemblies.
Shipping: Ships same or next day for fast Canada wide shipping. ā
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3ā4 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 ā 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 ā 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.