Mercury MerCruiser Pipe Plug 384071 (Pack of 5)
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The Mercury MerCruiser Quicksilver 384071 Pipe Plug is a threaded pipe plug fitting used in select Mercury / MerCruiser marine service applications. This listing is for a pack of 5 plugs. Each plug uses a 1/2-14 NPT thread configuration and is suited for applications where the factory parts diagram calls for Mercury part number 384071.
Key Features
- Mercury MerCruiser / Quicksilver pipe plug
- Part number: 384071
- Sold as a pack of 5
- Thread configuration: 1/2-14 NPT
- Standard square-head or hex-recessed pipe plug style
- Approximate weight: 0.05 lb
- Approximate package dimensions: 2.25 in L x 2.00 in W x 1.00 in H
Product Compatibility
Fits select Mercury / MerCruiser assemblies that call for 384071 in the factory parts diagram.
Fitment Notice
Confirm fitment by the exact Mercury / MerCruiser engine, drive, or component diagram before ordering. Pipe plugs should be matched by both part number and thread specification, especially where NPT sealing is required.
When This Part Needs Replacement
Replace pipe plugs when threads are damaged, the plug is corroded, rounded, leaking, seized, or removed during service and no longer suitable for reuse.
Installation Notes
Inspect the threaded port before installation and use the sealing method specified by the service manual for the application. Avoid over-tightening NPT plugs, as tapered pipe threads seal by controlled interference and can damage the housing if forced.
Alternate/Superseded Part Numbers
- 384071
Parts Desk Insight
The important detail here is the 1/2-14 NPT thread. Matching the plug by part number and thread size helps avoid leaks or housing damage from a plug that looks close but does not seal correctly.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
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.