Water Pump Impeller Kit – Fits Sherwood Pumps (Replaces 17000K, Jabsco 18958-0001, Johnson 09-704BT-1)
Water Pump Impeller Kit – Fits Sherwood Pumps (Replaces 17000K, Jabsco 18958-0001, Johnson 09-704BT-1) is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Kit – Fits Sherwood Pumps (Replaces 17000K, Jab...
Water Pump Impeller Kit – Fits Sherwood Pumps (Replaces 17000K, Jabsco 18958-0001, Johnson 09-704BT-1) is backordered and will ship as soon as it is back in stock.
Product Details
This OEM-equivalent Water Pump Impeller Kit – Fits Sherwood Pumps (Replaces 17000K, Jabsco 18958-0001, Johnson 09-704BT-1) is designed for marine water pump applications in various engine cooling systems. It is engineered to meet or exceed original equipment specifications, ensuring reliable performance in demanding marine environments.
It serves as a direct replacement for Sherwood 17000K and provides an interchange for part numbers from Jabsco, Johnson, Caterpillar, Cummins, and John Deere. Use the matrices below to confirm fitment for your specific pump or engine model.
- Installation: Installs as a direct OEM-equivalent replacement with no modifications required.
- Materials: Built with a durable neoprene impeller and a solid brass insert for corrosion resistance and longevity.
- Key Components: The kit includes one flexible impeller and the corresponding gasket or O-ring needed for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Sherwood | 17000K |
| Jabsco | 18958-0001 |
| Johnson | 09-704BT-1 |
| John Deere | RE49896 |
| Caterpillar | 7E0321 |
| Caterpillar | 1W5664 |
| Cummins | 3802444 |
| Cummins | 3897337 |
| Cummins | 3916852 |
| Cummins | 3925236 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This impeller is used in various Caterpillar engines that are equipped with compatible Sherwood pumps.
| Brand | Model | OEM Part No. |
|---|---|---|
| Caterpillar | 3116 | 7E0321, 1W5664 |
| Caterpillar | 3126 | 7E0321, 1W5664 |
| Caterpillar | 3126B | 7E0321, 1W5664 |
| Caterpillar | 3208 | 7E0321, 1W5664 |
| Caterpillar | C7 | 7E0321, 1W5664 |
| Caterpillar | C9 | 7E0321, 1W5664 |
The 17000K impeller is standard for the following Sherwood pump models.
| Brand | Model | OEM Part No. |
|---|---|---|
| Sherwood | P176X | 17000K |
| Sherwood | P1710C | 17000K |
| Sherwood | P1719X | 17000K |
| Sherwood | P1716C | 17000K |
| Sherwood | P1722C | 17000K |
| Sherwood | P1732C | 17000K |
| Sherwood | P1730C | 17000K |
Technical Specs
- Product Type
- Marine Water Pump Impeller Kit
- Installation
- Direct OEM Replacement
- Housing Material
- Neoprene with Brass Insert
- Dimensions
- 84mm diameter × 73mm width × 20mm shaft diameter (3-5/16" × 2-7/8" × 7/8")
- Fitting Type
- Key Drive / Keyed
- Keyway Size
- 3/16"
- Number of Vanes
- 12
- Color
- Black
- Warranty
- 1 Year Limited
What’s in the Box
- 1 × Flexible Impeller (Replaces 17000K)
- 1 × O-Ring/Gasket
- 1 × Key (if applicable)
Installation Notes
- Turn off the engine, allow it to cool, and disconnect the battery. Close the raw water intake seacock.
- Place a catch pan or absorbent towels under the pump to manage any spilled coolant.
- Unscrew the pump's faceplate bolts and remove the faceplate.
- Use impeller pulling pliers or two flathead screwdrivers to carefully pry the old impeller out of the housing.
- Clean any debris or old gasket material from the pump housing and faceplate. Inspect for scoring or deep scratches.
- Lubricate the inside of the pump housing and the new impeller with a water-based marine lubricant or dish soap.
- Insert the new impeller by pinching the vanes together and rotating it into the housing. The blades should bend in the direction of the pump's rotation.
- Install the new gasket or O-ring onto the faceplate.
- Reinstall the faceplate and tighten the screws in a star pattern to ensure an even seal. Do not overtighten.
- Open the seacock and reconnect the battery. Start the engine and immediately check the pump for leaks.
Troubleshooting & FAQ
How do I know if this impeller fits my pump?
This kit is a direct replacement for Sherwood 17000K. The most reliable method is to cross-reference your existing part number with the list in the "Part Number Matrix" section. It's also compatible with specific Caterpillar engines and Sherwood pumps listed under "Engine & Model Compatibility." Always verify your old impeller’s dimensions against our technical specs before ordering.
How often should a neoprene impeller be replaced?
For optimal performance and to prevent engine overheating, we recommend inspecting the impeller annually and replacing it every 1-2 years. Replacement may be needed more frequently if the vessel operates in saltwater or water with high amounts of sand or silt.
What are the signs of a failing impeller?
Common signs include reduced water flow from the exhaust, engine temperatures rising above normal, visible cracks or missing vanes on the impeller, and a stiff or brittle texture. If you notice a chunk of a vane is missing, it is crucial to find and remove it from the cooling system to prevent blockage. Immediate replacement is needed if any of these signs are observed.
Is a gasket included with this impeller kit?
Yes, the kit includes the flexible impeller and the necessary O-ring or paper gasket for a standard installation. The specific seal type varies by the pump brand it is designed to replace.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available for your region.
Warranty & returns
This product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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