Mercury MerCruiser Quicksilver Thermostat Housing Sleeve 47511
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 23-47511 is a sleeve fitted in specified MerCruiser thermostat-housing assemblies. It is a distinct housing component, separate from the thermostat-retaining sleeve 23-47508T.
Key Features
- OEM number: 23-47511.
- Thermostat-housing sleeve location.
- Shown at position 2 in the referenced thermostat-housing diagram.
Compatibility and Fitment
A documented application is the MerCruiser 540 Stroker 4V thermostat housing using housing assembly 87290A4. Other legacy GM-engine thermostat-housing arrangements also specify this sleeve; match the housing part number and diagram.
Replacement and Installation
Inspect the sleeve and housing for corrosion or damage during cooling-system service. Use the correct seating and installation procedure for the housing, and check the separate thermostat sleeve and gaskets at the same time.
Mercury Parts Finder
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Parts Desk Insight
Two different sleeves can appear in one thermostat-housing diagram. Match 47511 to the housing sleeve callout, not the separate 47508T thermostat sleeve.
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.