Water Pump Seal and Washer Kit for Mercury Marine 30–70 HP 2-Stroke Outboards — Replaces 26-38452 and 26-38453
Water Pump Seal and Washer Kit for Mercury Marine 30–70 HP 2-Stroke Outboards — Replaces 26-38452 and 26-38453 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Water Pump Seal and Washer Kit for Mercury Marine 30–70 HP 2-Stroke...
Water Pump Seal and Washer Kit for Mercury Marine 30–70 HP 2-Stroke Outboards — Replaces 26-38452 and 26-38453 is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Seal and Washer Kit is intended for selected Mercury Marine 30–70 HP 2-stroke outboards. It is listed as a replacement for Mercury Marine part numbers 26-38452 and 26-38453 and is used during water-pump service in applications associated with the 77177A3 or 46-77177A3 water-pump assembly reference.
Before ordering, compare the part numbers, water-pump assembly and engine specifications with your original parts. Model, year, serial-number and regional production differences can affect fitment.
- Replacement seal and washer components for water-pump service.
- Designed for selected Mercury Marine 30–70 HP 2-stroke applications.
- Verify the existing water-pump assembly and part numbers before installation.
Part Number References
The following manufacturer references are associated with this replacement kit. They are provided for identification and cross-reference purposes only.
| Brand | Part Number | Reference |
|---|---|---|
| Mercury Marine | 26-38452 | Seal reference |
| Mercury Marine | 26-38453 | Washer reference |
Engine & Model Compatibility
This kit is intended for selected Mercury Marine 30–70 HP 2-stroke outboards. Confirm the exact model, model year, serial-number range and water-pump assembly before purchase. The available product information does not establish universal fitment across every engine in this horsepower range.
| Brand | Application | Rated HP | Stroke | Part Number References | Fitment Note |
|---|---|---|---|---|---|
| Mercury Marine | Selected 30 JET applications | 30 | 2-Stroke | 26-38452, 26-38453 | Verify the water-pump assembly before ordering. |
| Mercury Marine | Selected outboard applications | 35–70 | 2-Stroke | 26-38452, 26-38453 | Model, year and serial-number conditions must be checked. |
Technical Specifications
- Product Type
- Water pump seal and washer kit
- Application
- Selected Mercury Marine 30–70 HP 2-stroke outboard water-pump assemblies
- Replacement References
- Mercury Marine 26-38452 and 26-38453
- Assembly References
- 77177A3 and 46-77177A3 references as applicable to the original water-pump assembly
- Product Status
- Aftermarket replacement; not a Mercury Marine OEM product
What’s in the Box
- 1 x Water pump seal
- 1 x Water pump washer
Other water-pump service parts, including an impeller, gaskets, face plate or housing, are not included unless specifically stated in the order details.
Installation Notes
- Make sure the engine is switched off, cool and securely supported before beginning work.
- Remove the lower unit and water-pump components according to the service procedure for your exact outboard model.
- Record the orientation and order of the original seal and washer components before removal.
- Clean the relevant mating and sealing surfaces and inspect the water-pump assembly for wear, corrosion or damage.
- Install the replacement seal and washer in the same locations and orientations as the removed parts.
- Reassemble the water-pump components using the manufacturer’s service procedure and torque specifications.
- After reassembly, run the engine only with an appropriate water supply and confirm proper cooling-water flow before normal operation.
Professional installation is recommended if you are not familiar with outboard lower-unit or water-pump service.
Troubleshooting & FAQ
How do I confirm whether this kit fits my outboard?
Compare your original seal and washer part numbers, water-pump assembly reference, engine model, model year and serial-number range with the information above. Do not rely on horsepower alone, because Mercury applications can vary by model and production range.
What are common signs of a water-pump sealing problem?
Possible signs include overheating at idle or low speed, weak water flow from the tell-tale outlet, or water leakage around the water-pump area. These symptoms can also be caused by a worn impeller, damaged gaskets, a blocked passage or another cooling-system fault.
Does this kit include a complete water-pump repair kit?
No. This listing is for the seal and washer components only. A complete water-pump service may also require an impeller, gaskets, face plate or other parts, depending on the condition of the existing assembly.
Can I reuse the existing water-pump components?
Reuse is dependent on condition. Inspect the housing, plate, impeller and related components for cracking, warping, scoring, corrosion or other damage. Replace any worn or damaged parts before returning the engine to service.
Is this an OEM Mercury Marine part?
No. This is an aftermarket replacement intended to correspond to the listed Mercury Marine part-number references. Verify the original component and application before installation.
How should I prepare for installation?
Have the correct service information for your exact engine available, use suitable marine-service tools and follow the manufacturer’s disassembly, reassembly and torque procedures. The product package does not replace the engine service manual.
Safety & Important Information
- Confirm the original part numbers and water-pump assembly before ordering.
- Keep engine model, year, serial-number and 2-stroke conditions together when checking compatibility.
- Do not operate an outboard without an adequate water supply.
- Inspect the complete cooling system if the engine has overheated or has weak tell-tale flow.
- This is an aftermarket replacement, not a Mercury Marine OEM component.
- Professional installation is recommended for safe and reliable service.
About Sea Sierra
- Marine Replacement Parts — Replacement components for common marine maintenance and repair applications.
- Application-Focused Listings — Product references and fitment guidance are provided to help you compare the replacement with your original part.
- Support Before Installation — Verify part numbers and engine details before purchasing or beginning service.
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