Mercury Mariner Quicksilver Outboard Water Tube Seal Grommet 38452
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Mercury Quicksilver 38452 is a genuine OEM water tube seal / grommet used in select Mercury and Mariner outboard gearcase and water pump housing service applications. The full Mercury part reference is commonly listed as 26-38452. This seal helps seal the water tube connection at the water pump housing, supporting proper cooling-water transfer through the lower unit.
Key Features
- Genuine Mercury Marine / Quicksilver OEM seal.
- Part number 38452 / 26-38452.
- Commonly identified as a water tube seal, water pump housing seal, or grommet.
- Used in select Mercury and Mariner outboard gearcase / water pump service layouts.
- Helps seal the water tube connection to support proper cooling-water flow.
- Often serviced alongside related water pump housing components.
- Small OEM sealing part that should be matched by exact parts diagram, not by appearance alone.
- UPC / GTIN reference: 745061140561.
- Approximate package size reference: 3.50" x 4.00" x 0.63".
Engine Compatibility
This is not a MerCruiser sterndrive engine part. The strongest supportable fitment for 38452 is select Mercury and Mariner outboard lower-unit / water pump housing service.
Commonly associated applications include:
- 30 HP Jet
- 35 HP 2-cylinder
- 40 HP 2-cylinder
- 40 HP 4-cylinder
- 45 HP 4-cylinder
- 50 HP 3-cylinder
- 50 HP 4-cylinder
- 60 HP 3-cylinder
- 70 HP 3-cylinder
Fitment varies by serial number and gearcase layout, so this part should be confirmed against the exact outboard model and water pump / gearcase diagram.
Serial Number Fitment Notice
Verify fitment by exact outboard serial number and the correct Mercury / Mariner gearcase or water pump housing parts diagram before ordering. This seal appears in specific lower-unit cooling-water layouts, and similar water pump seals or grommets can look close but fit different housings.
When This Part Needs Replacement
Replace this seal when the water pump housing is serviced, when the original seal is hardened, cracked, flattened, missing, or when there are signs of poor sealing at the water tube connection. A worn water tube seal can affect cooling-water transfer and may contribute to cooling issues after reassembly.
Installation Notes
Install 38452 / 26-38452 only after confirming the correct water pump housing diagram. Inspect the water tube, pump housing, impeller area, and related gaskets during service. The seal should sit correctly in the housing so the water tube connection is sealed when the lower unit is reassembled.
Alternate / Superseded Part Numbers
The active OEM Mercury part number for this listing is 38452 / 26-38452. Related references commonly associated with this water pump housing service area include:
- AM26-38452
- GLM85360
- 26-38453 / 38453 as a related washer or companion sealing part in some service references
Parts Desk Insight
The easy mistake with this seal is treating it like a generic rubber grommet. On Mercury and Mariner outboards, the correct match is the water pump housing diagram and serial number, because small cooling-system seals can look similar but seal different parts of the lower unit.
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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
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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.
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