Mercury Sleeve 29804T
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Mercury 29804T is a genuine OEM sleeve used in selected Mercury and MerCruiser cooling-system applications. Dealer listings identify it in Mercury catalog format as 23-29804T, and the earlier part history shows it as the updated service replacement for older sleeve 29804, which was identified as a guide for the water inlet tube.
Key Features
- Genuine Mercury Marine / Quicksilver OEM part
- Part number 29804T
- Mercury shorthand listing: 23-29804T
- Updated replacement for older 29804
- Commonly used as a water inlet tube guide sleeve in applicable cooling-system assemblies.
Engine Compatibility
This sleeve appears across a broad range of Mercury applications, including selected 9.9/13.5/15 HP 4-stroke outboards, 20/25 HP 2-cylinder outboards and jet variants, many 2.5L EFI/DFI/Pro XS outboards, and older R/MR/Alpha One sterndrive and transom assemblies. Because the fitment range is broad, exact compatibility should always be confirmed by model and serial number before ordering.
Serial Number Fitment Notice
Please confirm fitment in the Mercury Parts Catalog using your exact engine or drive serial number before purchase. Mercury’s official catalog is the safest way to verify the correct cooling-system part in the proper diagram.
When This Part Needs Replacement
Replace this sleeve when the original guide is worn, damaged, distorted, or being renewed during water pump or water inlet tube service. That service context is based on the earlier OEM description identifying the part as a water inlet tube guide.
Installation Notes
Install only the exact sleeve specified for the application being serviced. Small cooling-system guide parts can look simple, but they still need to match the correct pump and inlet-tube setup for proper alignment and sealing support.
Alternate / Superseded Part Numbers
- 23-29804T
- Supersedes 29804 / 23-29804
Parts Desk Insight
This is the kind of small cooling-system part that is easy to miss during a rebuild, but guide sleeves matter because they help the water inlet tube seat the way Mercury intended. On pump service jobs, replacing worn small hardware like this can help avoid repeat teardown later.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.