Mercury MerCruiser Quicksilver Gearcase Anode Screw Cover Plug 8M0142878
In stock items ship same or next day.
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Product Description
Mercury Quicksilver 19-8M0142878 is the cover plug for the anode-screw area of specified V6 and V8 outboard gear housings. The gearcase diagram lists it separately from the M10 x 25 anode screw.
Key Features
- OEM reference: 19-8M0142878.
- Gear-housing screw cover plug, diagram position 4.
- Two used in the referenced gearcase.
Compatibility and Fitment
Verified in 175 hp 3.4L V6 4.80- and 5.44-inch torpedo gear-housing diagrams and 300 hp 4.6L V8 Pro XS 5.44-inch gear housings. Applicable catalog families begin at serial 2B529482; match the installed gearcase.
Replacement and Installation
Replace a missing, split or loose plug when servicing the anode or lower unit. Inspect its seating area and refit the plug only after the underlying fastener has been correctly secured.
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Parts Desk Insight
The catalog label “plug screw” refers to the plug at the screw location. The fastening screw itself is a separate part, 10-8M0142850.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.