Mercury MerCruiser Quicksilver 5/16-24 Carburetor Stud Nut 862902
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 11-862902 is the 5/16-24 fine-thread nut used on specified MerCruiser carburetor mounting studs and other cataloged fastening locations. It replaces earlier nut 11-25594.
Key Features
- OEM reference: 11-862902.
- Thread: 5/16-24, cataloged as .312-24.
- Carburetor mounting-stud application.
- Replaces 11-25594.
Compatibility and Fitment
Verified in MerCruiser 3.0L GM 181 inline-four fuel-pump/carburetor diagrams and 5.7L carbureted MIE two-barrel arrangements. The 3.0L carburetor assembly lists four nuts with separate stud washers. Confirm the engine serial and exact fastening location.
Replacement and Installation
Replace a nut with damaged threads, rounded flats or substantial corrosion. Inspect the stud and washer, start the nut by hand to avoid cross-threading, and use the assembly-specific tightening procedure.
Alternate / Superseded Part Numbers
11-862902 replaces 11-25594.
Mercury Parts Finder
Search Mercury parts by serial number or part number.
Parts Desk Insight
A 5/16-inch coarse-thread nut will not match this fine-thread stud. Thread pitch and the required washer stack are the key checks when replacing carburetor mounting hardware.
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.