Mercury MerCruiser Quicksilver Stainless Steel Washer .406 x .750 x .105 856774
In stock items ship same or next day.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Product Description
Mercury Quicksilver 12-856774 is a stainless steel washer with catalog dimensions of .406 x .750 x .105 inch. It is used in specified outboard gear-housing, driveshaft-housing and jet-pump fastener assemblies.
Product Compatibility
Confirmed examples include the Mercury 90 three-cylinder jet-pump assembly, serial 1B000001 and above, and Mercury/Mariner 60 EFI four-cylinder FourStroke 1.83:1 gear housings, serial 0P401000–0P515896 and 1C000001–1C050251.
Alternate / Superseded Part Numbers
12-856774 is superseded by 12-8M0214963. This listing retains the legacy 856774 reference.
Installation Notes
Confirm the washer's thickness and numbered fastener position against the exact assembly diagram.
Parts Desk Insight
This washer appears in more than one location and quantity. Match the component stack rather than substituting any washer with the same center opening.
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.