369-65021-1 Water Pump Impeller for Nissan Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP 4-Stroke | JLM Marine

Water Pump Impeller for Nissan Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP 4-Stroke Outboard Motors

This premium aftermarket water pump impeller is designed for Nissan and Tohatsu 2HP, 2.5HP, 3.5HP, 4HP, 5HP, and 6HP 4-stroke outboard engines. Engineered to meet OEM specifications, this impeller ensures reliable cooling system performance and protects your engine from overheating during operation.

This impeller directly replaces OEM part numbers 369-65021-1 and 47-16154-3, providing a cost-effective solution for maintaining your outboard's water pump assembly.

• Constructed from durable neoprene with a nylon hub for long-lasting performance
• Features 6 precision-molded blades for optimal water flow
• Lubricate with silicone grease, glycerine, or dish soap during installation (lubricant 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

Your purchase includes:

• 1 × Outboard Impeller

Installation Guide

1. Disconnect the fuel line and remove the lower unit from the outboard motor following your engine's service manual.
2. Remove the water pump housing cover and carefully extract the old impeller from the pump body.
3. Clean the pump housing thoroughly, removing any debris, old gasket material, or corrosion.
4. Apply a generous amount of silicone grease, glycerine, or dish soap to the new impeller blades and pump housing. This lubrication is critical for proper installation and initial operation.
5. Install the new impeller into the pump housing, ensuring the blades rotate in the correct direction (typically matching the drive shaft rotation).
6. Replace the water pump housing cover and any worn gaskets or seals.
7. Reinstall the lower unit onto the outboard motor, ensuring proper alignment and torque specifications.
8. Reconnect the fuel line and perform a water flow test before operating the engine under load.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my engine?
A: Cross-reference your engine's model number with the compatibility table above. Verify that your original impeller matches OEM part number 369-65021-1 or 47-16154-3 before ordering.

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

Q: What are the signs of a failing impeller?
A: Common symptoms include weak or no water flow from the telltale (pee hole), engine overheating, steam from the engine, or an overheating alarm. Inspect the impeller if you experience any of these issues.

Q: Can this impeller be used in both 2-stroke and 4-stroke engines?
A: Yes, this impeller is compatible with select Nissan and Tohatsu 2-stroke and 4-stroke models as listed in the compatibility table. Always verify your specific engine model before installation.

Q: Why is lubrication important during installation?
A: Lubricating the impeller allows the blades to flex properly during installation and provides initial lubrication until water flow begins. Dry installation can damage the impeller blades and cause immediate failure.

Q: Is this an OEM or aftermarket part?
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.