Marine Impeller Repair Kit – Fits Sherwood 10615K-SHW (Replaces Sierra 18-3047, Crusader 20300, Oberdorfer 8922)

Marine Impeller Repair Kit – Fits Sherwood 10615K-SHW

This comprehensive impeller repair kit is designed for a wide variety of inboard marine engine raw water pumps. It is compatible with models from Sherwood, Crusader, Pleasurecraft, Volvo Penta, and other major marine engine brands manufactured from the 1970s through the present day, ensuring broad application for engine cooling systems.

This kit serves as a direct replacement for numerous part numbers, including Sherwood 10615K-SHW, Sierra 18-3047, Crusader 20300, and Oberdorfer 8922, among others. Please consult the cross-reference table to confirm compatibility with your specific pump model.

• Installation Type: Installs on a 5/8" shaft and is secured with a 3/16" key drive.
• Durable Material: Made from high-quality neoprene for reliable performance and longevity in marine environments.
• Complete Kit: Includes one impeller, six assorted gaskets, and one O-ring for a complete service.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Pump Models

Confirm your pump model in the tables below.

Sherwood Pumps

Other Pump Models

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Impeller (Sherwood 10615K-SHW)
• 6 x Gaskets (Various)
• 1 x O-ring

Installation Guide

1. Safety First: Ensure the engine is off and cool, and close the raw water intake seacock.
2. Access the Pump: Locate the raw water pump and remove the end cover plate, which is typically held by several screws or bolts.
3. Remove Old Impeller: Note the orientation of the blades. Use impeller pullers or two screwdrivers to carefully pry the old impeller out of the housing.
4. Clean and Inspect: Clean the pump housing interior and the cover plate. Check for scoring, cracks, or wear.
5. Install New Impeller: Lightly lubricate the inside of the pump housing and the new impeller with a water-resistant grease or soap.
6. Insert Impeller: Carefully insert the new impeller, bending the blades in the correct direction to match their original orientation.
7. Replace Gasket/O-Ring: Install the new gasket or O-ring included in the kit onto the cover plate.
8. Reassemble and Test: Secure the cover plate, reopen the seacock, and start the engine. Check immediately for proper water flow from the exhaust and inspect for any leaks around the pump cover.

Troubleshooting & FAQ

Q: How do I confirm this impeller kit will fit my engine?

A: The most reliable method is to match your existing part number to our cross-reference list. You can also verify fitment by checking your engine or pump model against the compatibility tables provided on this page.

Q: What are the common signs that my impeller needs to be replaced?

A: The most common signs of a failing impeller are an engine that is running hotter than normal or a noticeable reduction in water flow from the exhaust outlet. A damaged impeller cannot pump water effectively, leading to overheating.

Q: How often should I replace my raw water pump impeller?

A: As a general rule, impellers should be inspected annually and replaced either every year or two, depending on usage. Even if an impeller appears undamaged, the neoprene can become brittle over time, increasing the risk of blade failure.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.