Flexible Impeller Kit – Fits Kohler Marine Generators (Replaces Kohler 359978, Sherwood 8000K, Sierra 23-3314)
Flexible Impeller Kit – Fits Kohler Marine Generators (Replaces Kohler 359978, Sherwood 8000K, Sierra 23-3314) 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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Flexible Impeller Kit – Fits Kohler Marine Generators (Replaces Koh...
Flexible Impeller Kit – Fits Kohler Marine Generators (Replaces Kohler 359978, Sherwood 8000K, Sierra 23-3314) is backordered and will ship as soon as it is back in stock.
Product Details
This Flexible Impeller Kit – Fits Kohler Marine Generators (Replaces Kohler 359978, Sierra 23-3314) is engineered for Kohler marine generators, including 4EF, 5E, 6EF, and 7.3E series models. It also serves as a direct substitute for Sherwood 8000 and 8000K impeller kits, ensuring reliable performance for your sea water pump.
It provides a direct replacement for several part numbers, including Kohler 359978, Sherwood 8000K, Sierra 23-3314, Onan 132-0415, and JMP 7013-01K.
- Designed for direct, hassle-free installation.
- Specifically for use in raw water pump applications.
- The kit includes the flexible impeller and a replacement O-ring.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Kohler | 359978 |
| Sherwood | 8000K |
| Sierra | 23-3314 |
| Onan | 132-0415 |
| JMP | 7013-01K |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This impeller is widely used in Kohler marine generators. Please check your specific model and original part number to ensure correct fitment.
It is also a service part for specific Sherwood-made pumps.
Compatibility extends to certain Cummins Onan generators that use the cross-referenced part numbers.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Kohler | 4EF | 359978 | Sea water pump impeller |
| Kohler | 4EFCD | 359978 | Sea water pump impeller |
| Kohler | 4EFKD | 359978 | Sea water pump impeller |
| Kohler | 5E | 359978 | Sea water pump impeller |
| Kohler | 5ECD | 359978 | Sea water pump impeller |
| Kohler | 5EKD | 359978 | Sea water pump impeller |
| Kohler | 6EF | 359978 | Sea water pump impeller |
| Kohler | 6EFCD | 359978 | Sea water pump impeller |
| Kohler | 6EFKD | 359978 | Sea water pump impeller |
| Kohler | 8EFK | 359978 | Sea water pump impeller |
| Kohler | 3 | 359978 | Sea water pump impeller |
| Kohler | 3ECD | 359978 | Sea water pump impeller |
| Kohler | 5 | 359978 | Sea water pump impeller |
| Kohler | 7.3E | 359978 | Sea water pump impeller |
| Sherwood | G8001 | 8000K | Pump model |
| Sherwood | G8002 | 8000K | Pump model |
| Sherwood | G8001-01-90 | 8000K | Pump model |
Technical Specs
- Product Type
- Flexible Impeller Kit with O-Ring
- Installation
- Direct replacement
- Connection
- D-slot key drive
- Dimensions
- Impeller Diameter: 39.7 mm (1-9/16"), Width: 19.2 mm (3/4")
- Weight
- 0.045 kg (0.10 lbs) approximate
- Warranty
- 1 year manufacturer warranty (JMP Marine)
- Other Technical Attributes
- 6 blades, single flat drive (D-slot), shaft diameter: 12 mm
What’s in the Box
- 1 x Flexible Impeller (Neoprene + Brass) with 6 Blades and D-slot key (Kohler 359978, Sherwood 8000K)
- 1 x O-Ring, Nitrile 70 (ORG0031)
Installation Notes
- Shut off the engine and close the raw water intake seacock.
- Place absorbent pads under the pump to catch any spilled coolant or water.
- Loosen the screws and remove the pump's cover plate.
- Use impeller pullers or two screwdrivers to carefully pry out the old impeller.
- Clean the interior of the pump housing, removing any debris or old impeller pieces.
- Inspect the housing for scoring or wear; replace the pump if damage is significant.
- Lubricate the new impeller and the inside of the housing with a water-resistant grease or soap.
- Insert the new impeller, bending the blades in the direction of the pump's normal rotation.
- Install the new O-ring or gasket, ensuring it is seated correctly.
- Reinstall the cover plate and tighten the screws evenly in a star pattern.
- Open the seacock, start the engine, and immediately check for leaks and proper water flow from the exhaust.
Troubleshooting & FAQ
How do I know if my impeller is failing?
Common signs of a worn or failed impeller include engine overheating at normal speeds, a noticeable reduction in water flow from the exhaust outlet, and visible cracks, tears, or stiffness in the impeller blades upon inspection.
What is the recommended replacement schedule for this impeller?
For preventative maintenance and to ensure engine safety, it is best practice to replace your raw water pump impeller annually or every 200 hours of engine operation, whichever occurs first.
Will this fit a Kohler 5E generator?
Yes, this impeller kit is listed as a direct replacement for Kohler models in the 5E series. However, always double-check the part number stamped on your old impeller or in your owner's manual to confirm compatibility before purchasing.
Is any lubrication needed during installation?
Yes, applying a small amount of water-based lubricant or glycerine to the inside of the pump housing and the impeller itself will make installation easier and prevent damage to the blades during the initial dry start-up.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in 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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