Mercury MerCruiser Quicksilver Alpha One Gen II Water-Tube Guide Sleeve 816583
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 MerCruiser Quicksilver 23-816583 is the water-tube guide sleeve used above the water-pump coupling on specified Alpha One Gen II lower gear housings. It helps guide the water-tube connection as the drive sections are assembled.
Key Features
- OEM guide sleeve, full reference 23-816583.
- Water-pump / water-tube connection location.
- Listed for standard- and counter-rotation Alpha One Gen II assemblies.
- GTIN: 745061318946.
Product Compatibility
Verified Alpha One Gen II catalog ranges include 1991–1995, serials 0D469859–0F679999; 1996–1997, serials 0F680000–0K999999; and 1998-and-up, serials 0L100040 and above. Check the drive’s exact water-pump and coupling diagram.
Replacement and Installation
Inspect the sleeve for splitting or distortion when servicing the water pump. Check the water tube, coupling and O-rings, then align the connection carefully during reassembly. Do not force the drive halves together against a misaligned water tube.
Parts Desk Insight
The guide sleeve, pump coupling and sealing O-rings are separate diagram items. A damaged guide can make alignment difficult even when the sealing parts are new.
Manufacturer Parts Lookup
Use Mercury’s official parts finder to check the part against your engine or drive serial number.
Related Part
See the Mercury water-pump coupling assembly 816597A1 used with this guide sleeve in the applicable gear-housing diagram. Confirm the exact drive assembly before ordering both parts.
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.