18-8926 Flexible Impeller for PCM Crusader Excalibur 330 Ex34 ZR6 ZR409 | JLM Marine

Flexible Impeller for PCM Crusader Excalibur 330 Ex34 ZR6 ZR409 | JLM Marine

This high-quality flexible impeller is designed as a direct replacement for PCM and Crusader marine engines, including popular models such as the Excalibur 330, Ex34, ZR6, and ZR409, as well as 5.0L, 5.7L, 6.0L, and 8.1L configurations. Engineered to OEM specifications, this impeller ensures reliable cooling system performance for your marine engine.

This impeller directly replaces PCM RP061022, Crusader R061022, Mallory 9-45718, and Sierra 18-8926, providing broad cross-brand compatibility for easy sourcing and installation.

• Fits PCM and Crusader 5.0L, 5.7L, 6.0L, and 8.1L marine engines
• Direct replacement for multiple OEM and aftermarket part numbers
• Essential component for maintaining proper engine cooling

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

Your purchase includes the following component:

• 1 × Impeller RP061022

Installation Guide

1. Disconnect the battery and ensure the engine is cool before beginning work.
2. Locate the water pump housing on your PCM or Crusader engine and remove the mounting bolts.
3. Carefully remove the pump cover to access the old impeller. Note the orientation of the impeller blades.
4. Extract the old impeller by gently pulling it straight out, being careful not to damage the housing.
5. Clean the impeller housing thoroughly, removing any debris, old gasket material, or buildup.
6. Apply a light coating of glycerin or soapy water to the new impeller blades to ease installation.
7. Insert the new impeller into the housing, ensuring the blades are oriented in the correct direction (same as removal).
8. Replace the gasket or O-ring with a new one if included or available.
9. Reinstall the pump cover and torque the mounting bolts to manufacturer specifications.
10. Reconnect the battery and start the engine briefly to verify proper water flow.
11. Check for leaks around the pump housing and tighten connections if necessary.
12. Perform a test run and monitor engine temperature to confirm cooling system operation.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my PCM or Crusader engine?
A: Cross-reference your current impeller part number with the numbers listed in our Part Number Cross-Reference table (RP061022, R061022, 9-45718, or 18-8926). Also verify your engine model against our Compatible Engine Models table to ensure proper fitment.

Q: How often should I replace my water pump impeller?
A: Most manufacturers recommend replacing the impeller every 2–3 years or 300–500 hours of operation, whichever comes first. If you notice overheating, reduced water flow, or visible blade damage during inspection, replace it immediately regardless of operating hours.

Q: What are the signs that my impeller is failing?
A: Common symptoms include engine overheating, reduced or no water discharge from the tell-tale, steam from the engine compartment, or pieces of rubber in the cooling system. Inspect your impeller immediately if you experience any of these issues.

Q: Can I use glycerin or another lubricant during installation?
A: Yes, applying a small amount of glycerin or soapy water to the impeller blades makes installation easier and prevents blade damage. Avoid petroleum-based lubricants as they can degrade the rubber material.

Q: Is this an OEM part or 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.