30000K Flexible Impeller for Sherwood Pumps G3001-01 G3001-02 G3001X | JLM Marine

30000K Flexible Impeller for Sherwood Pumps G3001-01 G3001-02 G3001X | JLM Marine

This flexible impeller is engineered to fit Sherwood marine engine cooling pumps, specifically models G3001-01, G3001-02, and G3001X. It also supports Caterpillar pump numbers 322-8594 and 3228594, making it a versatile replacement for multiple marine applications.

This impeller directly replaces Sherwood 30000K, JMP 8459-01, Caterpillar 3228595, and Patent 6116855. It also replaces the Sherwood 25017 Minor Repair Kit (impeller component only).

• Constructed from neoprene for durability and heat resistance
• Features 10 blades with a 45-degree 10-spline shaft drive
• One end is threaded for puller compatibility (puller not included)

Part Number Cross-Reference

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

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

This package includes:

• 1× 30000K Flexible Impeller
• Note: One end is threaded for use with puller. Puller is NOT included.

Installation Guide

1. Disconnect the power source and relieve any pressure in the cooling system before beginning work.
2. Remove the pump cover or housing by loosening the mounting bolts or screws.
3. Carefully extract the old impeller using a puller tool if the impeller has a threaded end. Do not use excessive force to avoid damaging the pump chamber.
4. Inspect the pump chamber for debris, corrosion, or scoring; clean thoroughly if needed.
5. Lubricate the new impeller blades with a glycerin-based lubricant or soapy water to ease installation.
6. Insert the new impeller into the pump chamber, aligning the shaft splines carefully. Ensure the blades flex in the correct direction of rotation.
7. Reinstall the pump cover or housing, ensuring the gasket is properly seated and in good condition (replace if worn).
8. Tighten all bolts or screws evenly to the manufacturer's torque specifications.
9. Reconnect the power source and check for proper operation by running the engine briefly.
10. Inspect for leaks around the pump housing and verify that coolant flow is normal.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Sherwood or Caterpillar pump?
A: Verify your pump model number against our compatibility table (G3001-01, G3001-02, G3001X for Sherwood; 322-8594, 3228594 for Caterpillar). Also confirm the physical dimensions—width 4-5/16", diameter 4-1/2", and 45-degree 10-spline shaft drive—match your original impeller.

Q: How often should I replace the impeller?
A: Most manufacturers recommend replacing flexible impellers annually or every 200–300 hours of operation, whichever comes first. If you notice overheating, reduced coolant flow, or visible blade damage, replace it immediately.

Q: Why is one end threaded, and do I need a puller?
A: The threaded end allows you to attach a puller tool for easier and safer removal of the old impeller. While a puller is not included, using one is highly recommended to prevent damage to the pump chamber during removal.

Q: What are the signs of a failing impeller?
A: Common symptoms include engine overheating, weak or no coolant flow from the tell-tale (pee hole), visible cracks or missing blades on the impeller, and unusual noise or vibration from the pump.

Q: Can I install this impeller myself, or should I hire a professional?
A: If you have basic mechanical skills and the right tools (including a puller), you can install it yourself by following the steps in our Installation Guide. However, professional installation is recommended to ensure safety and optimal performance.

Q: Is this an OEM part or an aftermarket replacement?
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.