Water Pump Impeller Service Kit with Wear Plate for Suzuki DT6, DT8, DT9.9 and DT15 2-Stroke Outboards
Water Pump Impeller Service Kit with Wear Plate for Suzuki DT6, DT8, DT9.9 and DT15 2-Stroke Outboards is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Impeller Service Kit with Wear Plate for Suzuki DT6, DT8...
Water Pump Impeller Service Kit with Wear Plate for Suzuki DT6, DT8, DT9.9 and DT15 2-Stroke Outboards is backordered and will ship as soon as it is back in stock.
Product Details
This water pump impeller service kit with wear plate is designed for selected Suzuki 2-stroke outboards, including the DT6, DT8, DT9.9, DT15C and DT15 models listed below. It provides replacement water-pump service parts to help restore proper cooling-water circulation during routine maintenance or repair.
The kit is an aftermarket replacement for Suzuki part numbers 17400-98550 and 17400-98551. The company catalog also lists aftermarket reference 18-3259; reference numbers are provided for identification and should be checked against the model and year of your engine before ordering.
- Replacement water pump impeller for specified Suzuki 2-stroke outboards.
- Includes a wear plate for the water pump service.
- Supplied without a water pump housing.
- Designed for service installation using the original compatible fasteners and surrounding components.
Part Number Matrix
Use these references to compare the replacement kit with the part numbers shown in your engine or parts documentation.
| Brand or Source | Part Number | Reference Type |
|---|---|---|
| Suzuki | 17400-98550 | OEM reference |
| Suzuki | 17400-98551 | OEM reference |
| Aftermarket | 18-3259 | Aftermarket reference |
Engine & Model Compatibility
Fitment is limited to the Suzuki 2-stroke model and year ranges listed below. Confirm the complete model designation and production year before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Reference |
|---|---|---|---|---|---|
| Suzuki | DT6 | 6 HP | 2-Stroke | 1984–2002 | 17400-98550, 17400-98551 |
| Suzuki | DT8 | 8 HP | 2-Stroke | 1986–1997 | 17400-98550, 17400-98551 |
| Suzuki | DT9.9 | 9.9 HP | 2-Stroke | 1985–1987 | 17400-98550, 17400-98551 |
| Suzuki | DT15C | 15 HP | 2-Stroke | 1989–1997 | 17400-98550, 17400-98551 |
| Suzuki | DT15 | 15 HP | 2-Stroke | 1983–1988 | 17400-98550, 17400-98551 |
Technical Specs
- Product Type
- 2-stroke water pump impeller service kit with wear plate
- Application
- Selected Suzuki DT6, DT8, DT9.9, DT15C and DT15 outboards
- Included Service Parts
- Water pump impeller and wear plate
- Water Pump Housing
- Not included
- Replacement References
- Suzuki 17400-98550 and 17400-98551; aftermarket reference 18-3259
What’s in the Box
- 1 x Water pump impeller
- 1 x Wear plate
Note: The water pump housing, gaskets, key and other installation hardware are not listed as included components for this kit. Reuse or source those parts separately only after confirming compatibility with your engine.
Installation Notes
- Confirm the exact Suzuki model, year and existing water-pump parts before disassembly.
- Disconnect the spark plug wires and place the outboard in neutral. Follow the engine manufacturer's service procedures.
- Place a drain pan under the lower unit and drain the gear lubricant if required for lower-unit removal.
- Remove the fasteners connecting the lower unit to the driveshaft housing, then carefully lower the gearcase.
- Remove the water pump housing and take out the old impeller and wear plate.
- Clean the mating surfaces and inspect the pump housing, driveshaft keyway, water tube and related components for wear or damage.
- Install the new wear plate and impeller using the correct original-compatible key and gasket for your engine. The key and gasket are not included in this kit.
- Lubricate the impeller and pump housing as recommended by the engine service manual. Install the housing with the impeller vanes oriented according to the manufacturer's procedure.
- Reinstall the lower unit, ensuring that the water tube, driveshaft and shift shaft align correctly. Tighten fasteners to the manufacturer's specifications.
- Refill the lower unit with the correct gear lubricant if it was drained.
- Run the engine using the appropriate flushing method or in the water and verify a steady tell-tale stream before normal operation.
Troubleshooting & FAQ
Which Suzuki outboards does this kit fit?
The cataloged fitment covers selected Suzuki 2-stroke DT6, DT8, DT9.9, DT15C and DT15 outboards within the model and year ranges shown in the compatibility table. Check the complete model designation and year before ordering.
Does this kit include the water pump housing?
No. This is a service kit supplied without the water pump housing. Inspect your existing housing and replace it separately if it is worn, cracked or warped.
Does the kit include a gasket or impeller key?
The company product information identifies the included service parts as the water pump impeller and wear plate. A gasket and key are not listed as included, so confirm and source those parts separately if required for your engine.
What are the signs of a failing water pump impeller?
Common symptoms include a weak or missing tell-tale stream, overheating, reduced cooling performance or damaged, brittle and missing impeller vanes. Inspect the pump components whenever cooling performance is abnormal.
How often should I replace the impeller?
Replacement intervals depend on the engine manufacturer's maintenance schedule, operating hours and water conditions. Inspect the impeller regularly and replace it when the vanes show cracking, hardening, deformation or other damage.
Is installation difficult?
Installation normally requires removal of the outboard lower unit and access to the water pump. If you are not familiar with outboard service procedures, professional installation is recommended.
Is this an OEM Suzuki part?
No. This is an aftermarket replacement kit intended for the listed Suzuki applications. Suzuki names and part numbers are used only to identify application and reference compatibility.
What are the shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most regions; expedited options and final costs are shown at checkout where available.
What is the warranty and return policy?
Warranty coverage and returns are subject to the seller's current policies. Contact support with your order details before returning an item, and keep unused parts in their original condition when requesting a return.
Safety & Important Info
- Verify the complete engine model, year and original part references before purchase. Horsepower alone is not sufficient to confirm fitment.
- This is an aftermarket replacement part, not an OEM Suzuki component. Brand names and part numbers are used for reference purposes only.
- The kit includes an impeller and wear plate only. Confirm whether your service requires a separate gasket, key, housing or additional hardware.
- Use the manufacturer's service manual for torque values, impeller orientation, lubrication and flushing procedures.
- Professional installation is recommended. Incorrect water-pump installation can cause inadequate cooling or engine damage.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts selected for dependable fit and service performance.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with an average transit time of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide practical replacement solutions for marine maintenance.
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