Mercury MerCruiser Quicksilver Carburetor-to-Reed-Block Gasket 63309
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 63309 is the carburetor flange gasket used between the carburetor and reed-block mounting surface on specified small Mercury outboards. It is a separate service gasket for restoring the carburetor mounting seal during removal or rebuilding.
Key Features
- Mercury catalog number: 27-63309
- Carburetor-to-reed-block / carburetor flange gasket
- Cataloged on specified 4, 4.5, 7.5 and 9.8 hp outboard carburetors.
Engine Compatibility & Fitment Notice
Examples include Mercury 7.5 hp engines from USA serial 5206550 and Mercury 9.8 (Merc 110) engines from USA serial 5206550 using the specified Walbro or Tillotson carburetor assemblies. Confirm the engine serial number and carburetor identification before ordering; horsepower alone does not identify the gasket.
Alternate / Superseded Part Numbers
27-63309 supersedes earlier gasket 27-22023.
When This Part Needs Replacement
Replace the flange gasket when it tears during carburetor removal or when the mounting joint is being resealed.
Installation Notes
Clean the carburetor and reed-block mating faces without damaging them, and align all openings before tightening.
Mercury Parts Finder
Search Mercury parts by serial number or part number.
Parts Desk Insight
The carburetor model matters on these small outboards: the same horsepower can have different carburetor assemblies and mounting details.
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.