309-65021-2;47-95289-2;47-114812 Outboard Impeller for Mariner Tohatsu 2HP 2.5HP 3HP | JLM Marine

309-65021-2; 47-95289-2; 47-114812 Outboard Impeller for Mariner, Tohatsu 2HP 2.5HP 3HP

This aftermarket water pump impeller is engineered to fit Mariner 2HP, 2.5HP, and 3HP outboard engines, as well as Tohatsu 2.5A, 3.5A, and 3.5B models. Designed to meet OEM specifications, this impeller ensures reliable cooling system performance for small outboards in both freshwater and saltwater environments.

This impeller directly replaces multiple OEM part numbers including Tohatsu 309-65021-2, Mercury 47-95289-2 and 47-114812, as well as aftermarket equivalents from CEF and Mallory. It provides a cost-effective solution without compromising on quality or fit.

• Includes one complete water pump impeller ready for installation
• Compatible with Mariner and Tohatsu small outboard engines (2HP–3.5HP)
• Direct replacement for OEM impellers with exact fitment

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. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

Your purchase includes:

• One (1) Water Pump Impeller

Installation Guide

1. Disconnect the fuel line and remove the lower unit from the outboard engine following manufacturer guidelines.
2. Locate the water pump housing on the lower unit and remove the retaining screws or fasteners.
3. Carefully remove the old impeller from the pump housing, noting the direction of the blades. Clean the housing thoroughly and inspect for debris or corrosion.
4. Lubricate the new impeller with glycerin, soapy water, or manufacturer-recommended lubricant to ease installation and prevent blade damage.
5. Install the new impeller into the housing, ensuring the blades face the correct direction (match the old impeller's orientation).
6. Reassemble the water pump housing and secure all fasteners to the manufacturer's torque specifications.
7. Reinstall the lower unit onto the outboard engine, ensuring proper alignment and connection of the water intake.
8. Reconnect the fuel line and perform a water test to verify proper cooling system operation and water discharge from the tell-tale.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Mariner or Tohatsu engine?
A: Cross-reference your engine's horsepower (2HP, 2.5HP, or 3HP for Mariner; 2.5A, 3.5A, or 3.5B for Tohatsu) with the compatibility table above. You can also verify by matching your original impeller's OEM part number (309-65021-2, 47-95289-2, or 47-114812) to our cross-reference table.

Q: How often should I replace my outboard water pump impeller?
A: Most manufacturers recommend replacing the impeller every 2–3 years or every 200–300 hours of operation, whichever comes first. If you notice overheating, reduced water flow from the tell-tale, or visible blade damage, replace it immediately regardless of hours.

Q: What are the signs of a failing water pump impeller?
A: Common symptoms include engine overheating, weak or no water discharge from the tell-tale outlet, steam from the engine, or loss of power. If you observe any of these signs, inspect and replace the impeller promptly to prevent engine damage.

Q: Can I install this impeller myself, or do I need a mechanic?
A: If you have basic mechanical skills and the proper tools, you can replace the impeller yourself by following the installation guide above. However, if you are unfamiliar with lower unit disassembly or torque specifications, professional installation is recommended to ensure safety and proper function.

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.