Water Pump Impeller Kit for Mercury 6–9.9 HP and Select Force 9.9–15 HP Outboards
Water Pump Impeller Kit for Mercury 6–9.9 HP and Select Force 9.9–15 HP Outboards is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Kit for Mercury 6–9.9 HP and Select Force 9.9–1...
Water Pump Impeller Kit for Mercury 6–9.9 HP and Select Force 9.9–15 HP Outboards is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller kit is intended for selected Mercury Marine and Force/Chrysler outboard applications. It is designed to restore water-pump circulation and help maintain proper cooling-system performance when the original impeller is worn, cracked, brittle, or damaged.
The impeller reference is associated with Mercury 6 HP, 8 HP, and 9.9 HP outboards across the serial-number ranges listed below. It is also associated with selected Force applications, including 9.9–15 HP models. Always confirm the complete engine model, stroke, year, and serial number before ordering.
This kit is an aftermarket replacement and is not manufactured by Mercury Marine, Force, Chrysler, GLM, Mallory Marine, or Sierra. The manufacturer and reference numbers below are provided only for identification and cross-reference purposes.
- Product type: Water pump impeller service kit
- Impeller material: Neoprene rubber
- Service purpose: Replacement of the water-pump impeller and related sealing components
- Installation: Direct replacement-style service part; fit must be confirmed against the engine application
Part Number Matrix
Use these manufacturer and aftermarket references to compare the part with the component being replaced. A matching number alone does not confirm fitment when the engine serial-number range or design differs.
| Brand or source | Reference | Identification |
|---|---|---|
| Mercury Marine | 47-42038Q02 | Impeller reference listed in Mercury parts catalogs |
| Mercury Marine | 47-420381 | Cross-reference used with this impeller application |
| Mercury Marine | 47-420382 | Cross-reference used with this impeller application |
| Mercury Marine | 47-42038-2 | Reference associated with the Force/Chrysler application |
| GLM | 89451 | Aftermarket cross-reference |
| Mallory Marine | 9-45309 | Aftermarket cross-reference |
| Mallory Marine | 9-45309-10 | Aftermarket cross-reference |
| Sierra | 18-3062 | Aftermarket impeller cross-reference |
Engine and Model Compatibility
The following applications are compiled from catalog relationships for the referenced impeller. The catalog records preserve the model, stroke, and serial conditions where available. If your engine falls outside a listed range, do not assume compatibility.
| Brand | Engine | Rated HP | Stroke | Serial or year condition | Reference | Notes |
|---|---|---|---|---|---|---|
| Mercury | Outboard | 6 | Not specified in catalog record | 0A197112 through 0D280999 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | Outboard | 6 | Not specified in catalog record | 0D281000 through 0G760299 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | Outboard | 6 | Not specified in catalog record | 0G760300 through 0T800999 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | Outboard | 6 | Not specified in catalog record | 0P325500 and up | 47-42038Q02 | Gear-housing impeller application |
| Mercury | Outboard | 8 | Not specified in catalog record | 0A197112 through 0D280999 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | Outboard | 8 | Not specified in catalog record | 0D281000 through 0G760299 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | Outboard | 8 | Not specified in catalog record | 0G760300 through 0T979999 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | 8 Bodensee | 8 | 4-Stroke | 0P325500 and up | 47-42038Q02 | 209 cc model designation |
| Mercury | 8 Bodensee, international | 8 | 4-Stroke | 0H000058 and up | 47-42038Q02 | Serial condition must be confirmed |
| Mercury | 9.9 | 9.9 | Not specified in catalog record | 0A197112 through 0D280999 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | 9.9 | 9.9 | Not specified in catalog record | 0D281000 through 0G760299 | 47-42038Q02 | Gear-housing impeller application |
| Mercury | 9.9 | 9.9 | Not specified in catalog record | 0G760300 through 0T979999 | 47-42038Q02 | Gear-housing impeller application |
| Force/Chrysler | Outboard | 9.9–15 | Not specified | 1998; serial E288600 through E344999 | 18-3062 / 47-42038-2 | Catalog identifies this as an impeller application; confirm the lower-unit design |
Technical Specifications
- Product type
- Water pump impeller service kit
- Impeller material
- Neoprene rubber
- Application
- Selected Mercury and Force/Chrysler marine outboards
- Installation
- Replacement-style water-pump service
- Brand status
- Aftermarket replacement; not an OEM Mercury or Force component
What’s in the Box
- 1 x Neoprene water-pump impeller
- 1 x Impeller key
- 1 x Water-pump gasket, reference 27-19202
- 1 x Water-pump gasket, reference 27-19204
Package contents are intended for the service configuration described on this page. Compare the included gaskets and key with the parts removed from your engine before beginning installation.
Installation Notes
- Review the engine service manual and confirm the exact model, stroke, and serial-number range before disassembly.
- Disconnect the battery where applicable, place the engine in neutral, and support the outboard securely.
- Remove the lower unit according to the manufacturer’s service procedure.
- Remove the water-pump cover and inspect the housing, wear surfaces, drive key, and shaft for damage or excessive wear.
- Remove the old impeller and key. Note the direction of the existing vanes before removal.
- Clean the pump housing and install the supplied gasket, key, and impeller. Lubricate the impeller with clean water or an approved assembly lubricant; do not install it dry.
- Rotate the driveshaft in the normal direction of operation while seating the impeller so the vanes fold in the correct direction.
- Reinstall the pump cover and lower unit using the service manual’s torque sequence and specifications.
- Run the engine only with an adequate water supply and verify a steady cooling-water stream before returning the boat to service.
Troubleshooting and FAQ
How do I confirm this kit fits my engine?
Match the engine brand, model, horsepower, stroke, and complete serial number with the compatibility table. Also compare the old impeller, keyway, pump housing, and gaskets. If any of these details differ, consult the engine service manual before ordering.
What are the signs of a failing water-pump impeller?
Typical symptoms include overheating, a weak or missing tell-tale stream, reduced cooling-water flow, or an impeller that is cracked, hardened, deformed, or missing vane material.
How often should an outboard impeller be inspected?
Inspect the impeller according to the engine manufacturer’s maintenance schedule. Frequent operation in saltwater, sand, silt, or shallow water can accelerate wear and may require more frequent inspection or replacement.
Is this an OEM part?
No. This is an aftermarket replacement designed for the applications and reference numbers listed on this page. Mercury, Force, Chrysler, GLM, Mallory Marine, and Sierra names and numbers are used only to identify related applications or cross-references.
Why should I verify the serial number?
Water-pump components can change between production ranges, gearcase designs, gear ratios, and model generations. A similar horsepower rating does not by itself establish compatibility.
Safety and Important Information
- Do not operate the engine without an adequate water supply.
- Follow the engine manufacturer’s service manual for removal, installation, torque values, and testing.
- Inspect the pump housing and wear surfaces whenever the impeller is replaced.
- Verify the part visually and by application before purchase; do not rely on horsepower alone.
- Professional installation is recommended if you are not familiar with outboard lower-unit service.
About Sea Sierra
- Marine replacement parts: Practical aftermarket components for routine boat and outboard maintenance.
- Application-focused listings: Reference numbers and engine conditions are shown to help customers compare parts accurately.
- Service-ready information: Review the fitment conditions and installation notes before ordering or beginning repairs.
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