Mercury MerCruiser Quicksilver Carburetor Inlet Seat Gasket 25033 flagged 0
In stock items ship same or next day.
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You have 30 days to request a return. All sale items are final sale.
Product Description
Mercury Quicksilver 27-25033 is the inlet needle-seat gasket used in selected legacy Mercury outboard carburetors. It seals the inlet-seat connection within the carburetor rather than the float-bowl cover or carburetor mounting flange.
Key Features
- OEM reference: 27-25033; inventory part number: 25033.
- Mercury 450 four-cylinder carburetor diagram position 15.
Compatibility and Fitment
A documented application is Mercury 450 four-cylinder outboards, serial numbers 1476510 through 1531568. Match the carburetor and inlet-seat callout before ordering.
Replacement and Installation
Renew a gasket that is damaged or no longer seals when servicing the inlet needle and seat. Clean the seat recess carefully and follow the carburetor service procedure without enlarging or damaging the seat.
Mercury Parts Finder
Search Mercury parts by serial number or part number.
Parts Desk Insight
The inlet-seat gasket and float-bowl-cover gasket are separate parts. Identify the leaking joint before selecting the replacement.
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.