Impeller Repair Kit – Fits Sherwood, Crusader, Oberdorfer (Replaces Sherwood 10615K-SHW, Sierra 18-3047/18-3061, Crusader 20300, Oberdorfer 8922, Pleasurecraft RP061017)
Impeller Repair Kit – Fits Sherwood, Crusader, Oberdorfer (Replaces Sherwood 10615K-SHW, Sierra 18-3047/18-3061, Crusader 20300, Oberdorfer 8922, Pleasurecraft RP061017) 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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Impeller Repair Kit – Fits Sherwood, Crusader, Oberdorfer (Replaces...
Impeller Repair Kit – Fits Sherwood, Crusader, Oberdorfer (Replaces Sherwood 10615K-SHW, Sierra 18-3047/18-3061, Crusader 20300, Oberdorfer 8922, Pleasurecraft RP061017) is backordered and will ship as soon as it is back in stock.
Product Details
This Impeller Repair Kit – Fits Sherwood, Crusader, Oberdorfer Raw Water Pumps (Replaces Sherwood 10615K-SHW) is a direct replacement for the Sherwood 10615K-SHW impeller. It is designed for raw water pumps in a wide range of marine engines, including models from Chris Craft, Chrysler, Crusader, Indmar, OMC, Perkins, Pleasurecraft, and Volvo Penta.
This kit serves as a direct interchange for Sherwood 10615K-SHW, Sierra 18-3047/18-3061, Crusader 20300, Oberdorfer 8922, and Pleasurecraft RP061017.
- Engineered for raw water and sea water cooling pump applications.
- Direct replacement installation for easy servicing.
- Includes one neoprene impeller, six gaskets, and one O-ring.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Sherwood | 10615K-SHW |
| Sierra | 18-3047 |
| Sierra | 18-3061 |
| Crusader | 20300 |
| Oberdorfer | 8922 |
| Pleasurecraft | RP061017 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Chris Craft | 307-327Q | 4-Stroke | 16.80-10010, 16.80-18340, 16.80-18347 | Used with raw water pumps | ||
| Chris Craft | 327F, 427, 454 | 4-Stroke | 16.80-90131 | Used with raw water pumps | ||
| Chrysler | Marine 318 & 360 | 4-Stroke | 2846428, 2847629, 3619030 | For raw water pumps | ||
| Chrysler | LM318-X through LM344-X | 4-Stroke | 3619212, 3675763, 3745511 | For raw water pumps | ||
| Chrysler | M383X, M413E, M440X | 4-Stroke | 4142878, E-7592-M | For raw water pumps | ||
| Crusader | 220, 270, 300, 350 | 4-Stroke | 40050, 40070, 97179 | Raw water pumps | ||
| Crusader | Various | 4-Stroke | 20300 | Current part number | ||
| Cummins | 210 HP 4B | 210 | 4-Stroke | 3912019, 3908220 | For raw water pumps | |
| Onan | 5 & 6 cylinder diesel | 4-Stroke | 132-0278, 132-0343, 132-0347 | For raw water pumps | ||
| Onan | 10-25 KW | 4-Stroke | 132-0356, 132-0413, 132-2692, 132-0348, 132-0349 | For raw water pumps | ||
| OMC | Inboard & V8 Chevy | 4-Stroke | 981937, 981939, 985096 | Raw water pumps | ||
| Perkins | 6-354 diesel | 4-Stroke | NA001175, NA900012 | For raw water pumps | ||
| Pleasurecraft | Chevy 454 | 4-Stroke | RP061017 | Current part number | ||
| Pleasurecraft | 7.3L diesel | 4-Stroke | RP061017 | Current part number | ||
| Pleasurecraft | 350 GM, 5.7L, 8.1L V8 GM | 4-Stroke | RP061017 | Current part number | ||
| Pleasurecraft | ILMOR 5.7L, 6.0L, 6.2L | 4-Stroke | 2011-Up | RP061017 | Raw water cooled engines | |
| Volvo Penta | Various | 4-Stroke | 835874-9, 3854286 | Used with raw water pumps | ||
| Volvo Penta | Crank drive engines | 4-Stroke | 835874 | For raw water pumps | ||
| Westerbeke | 4 & 6 cylinder diesel | 4-Stroke | 16432, 13930 | For raw water pumps | ||
| Commander | 302, 351 | 4-Stroke | C2-10-610 | For raw water pumps | ||
| Escort | 302, 351 | 4-Stroke | D5MZ8502 | For raw water pumps | ||
| Gray Marine | Gov engines | 4-Stroke | G85106 | For raw water pumps | ||
| Indmar | 4 & 6 cylinder, Gov engines | 4-Stroke | For raw water pumps | |||
| Isuzu | 4 & 6 cylinder diesel | 4-Stroke | X-26230-1023 | For raw water pumps | ||
| Sherwood | Various (see notes) | 4-Stroke | 10615K-SHW | B04, C-03, D05, D55, E35, F10, F75, F95, G3, G4, G5, G5-1, G7, G7B, G8, G26-01, G45-1, G45-2, G46, G50, G55-2, G56, G85, G1004, G1005, G1006-01, G1008-01, H-85, K90, L10, L10B, L80, L90, M71-01, P101, P102, P105, P105-01, P109, P1012-01, P10550G, R101, R102, R10970G, RPBC, S11040G & S11095G pumps |
Technical Specs
- Product Type
- Impeller Repair Kit
- Installation
- Direct Replacement
- Impeller Width
- 41.2mm (1-5/8")
- Impeller Diameter
- 65mm (2-9/16")
- Shaft Size
- 16mm (5/8")
- Drive Type
- 3/16" Key Drive
- Impeller Material
- Neoprene
- Blade Configuration
- 12 Blades
- Applications
- Raw Water/Sea Water Cooling Pumps
- Compatibility
- Multiple Marine Engine Brands
What’s in the Box
- 1 x Impeller (Replaces Sherwood 10615K-SHW)
- 6 x Gaskets
- 1 x O-ring
Installation Notes
- Ensure the engine is off and cool. Close the water intake seacock.
- Place absorbent pads under the pump to catch any spillage.
- Remove the screws from the raw water pump cover plate.
- Carefully pry off the cover. Note the orientation of the old impeller blades.
- Remove the old impeller using impeller pullers or two screwdrivers as levers. Avoid gouging the pump housing.
- Clean the inside of the pump housing and the cover plate, removing any old gasket material or debris.
- Lightly lubricate the new impeller and the inside of the pump housing with a suitable marine lubricant (glycerin or soap).
- Insert the new impeller with a rotating motion, ensuring the blades are bent in the same direction as the old one.
- Install the new O-ring or gasket on the cover plate.
- Re-install the cover plate and tighten the screws evenly in a star pattern.
- Open the water intake 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 needs replacing?
Signs of a failing impeller include reduced water flow from the exhaust, engine temperatures rising above normal, visible cracks or missing blades on the impeller, and a brittle or stiff feel to the rubber. Regular inspection (at least annually) is recommended.
What causes an impeller to fail prematurely?
The most common cause is running the pump dry, which quickly overheats and destroys the neoprene blades. Other causes include ingestion of debris, chemical exposure (oil, fuel), and normal wear and tear over time.
Can I reuse the gaskets or O-ring?
No. This kit includes a new set of gaskets and an O-ring. Always use new seals during an impeller replacement to ensure a leak-free seal and prevent pump cavitation or damage.
The new impeller seems larger than the pump housing. Is this normal?
Yes, impellers are designed to fit tightly into the housing. The blades are flexible and will compress upon insertion. This tight fit is necessary to create the pumping action. Be sure to lubricate it before installation.
Why so many gaskets?
This kit is designed to fit a wide variety of pump models from different manufacturers (Sherwood, Oberdorfer, etc.). These pumps have slightly different gasket patterns. Match the correct new gasket to your specific pump model and discard the others.
What is the difference between Neoprene and Nitrile impellers?
Neoprene (used in this impeller) is excellent for raw water cooling pumps where some sand or silt may be present. Nitrile impellers are typically used for oil or diesel fuel transfer pumps as they are more resistant to petroleum products.
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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