Water Pump Impeller – Fits Tohatsu & Nissan 25-30 HP 2-Stroke Outboards (Replaces 345-65021-0)

Water Pump Impeller – Fits Tohatsu & Nissan 25-30 HP 2-Stroke Outboards

This water pump impeller is designed for Tohatsu and Nissan 25-30 HP 2-stroke outboard motors. As a crucial component of the engine's cooling system, it ensures proper water circulation to prevent overheating. This part is a direct replacement for the original, manufactured to meet or exceed OEM specifications.

This is an aftermarket replacement part, offering a reliable alternative to the OEM component. It replaces several Tohatsu and Nissan part numbers, providing broad compatibility with various engine models.

• Material: Durable Neoprene compound for reliable performance
• Installation: Direct replacement for a hassle-free installation
• Blades: 6

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

1 x Water Pump Impeller (Replaces 345-65021-0)

Installation Guide

1. Disconnect the battery and ensure the engine is turned off and cool.
2. Remove the lower unit from the outboard motor.
3. Locate and unbolt the water pump housing.
4. Carefully remove the old impeller, noting its orientation.
5. Clean the housing and inspect for any wear or damage.
6. Lubricate the new impeller and the inside of the housing with marine grease.
7. Install the new impeller, rotating the driveshaft in a clockwise direction to bend the blades correctly.
8. Reassemble the water pump housing and torque the bolts to the manufacturer's specification.
9. Reinstall the lower unit, ensuring all connections are secure.
10. Reconnect the battery and test the engine's cooling system at idle.

Troubleshooting & FAQ

How do I confirm this fits my engine?
Please use the comprehensive "Compatible Engine Models" and "Part Number Cross-Reference" tables on this page. Verify your engine model and original part number match the lists provided. Some sources show this fits 35-40 HP models, while others confirm only 25-30 HP; always check your specific part number before ordering.

What are the signs of a failing impeller?
Common signs include the engine overheating, a weak or non-existent water stream from the tell-tale outlet, and a dry, brittle, or cracked appearance on the old impeller's blades upon inspection.

How often should I replace the water pump impeller?
For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years, depending on usage (hours) and operating conditions (saltwater vs. freshwater).

OEM vs. Aftermarket?
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.

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

What is your warranty and return policy?
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.