6H3-44352-01 Outboard Rubber Impeller with Key/Pin for Yamaha 40HP 50HP 55HP 60HP 70HP T50 T60 P50 P60 C40 40V 40Y C50 50G 50H 55B Pro50 C55 E60 60F 70B C70 F40A F40C F45A F50A F50B F50F FT50B FT50C FT50G F60A F60C FT60B FT60D F70A | JLM Marine

6H3-44352-01 Outboard Rubber Impeller with Key/Pin for Yamaha 40HP 50HP 55HP 60HP 70HP

This premium aftermarket rubber impeller is engineered to fit a wide range of Yamaha 2-stroke and 4-stroke outboard engines from 40 HP to 70 HP. Compatible with popular series including T50, T60, P50, P60, C40, C50, C55, C60, C70, E60, F40A, F40C, F45A, F50A, F50B, F50F, FT50B, FT50C, FT50G, F60A, F60C, FT60B, FT60D, and F70A models spanning multiple production years.

This impeller directly replaces OEM part number 6H3-44352-01, ensuring reliable cooling system performance for your Yamaha outboard engine.

• Complete assembly includes impeller with key/pin for secure installation
• Compatible with both 2-stroke and 4-stroke Yamaha outboards
• Fits engines ranging from 40 HP to 70 HP across multiple model years

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

Technical Specifications

Package Contents

• 1 × Outboard Rubber Impeller with Key/Pin

Installation Guide

1. Preparation: Disconnect the battery and remove the lower unit from the outboard engine following your service manual instructions.
2. Access the Water Pump: Remove the water pump housing cover to expose the old impeller.
3. Remove Old Impeller: Carefully extract the old impeller and key/pin from the drive shaft. Inspect the pump housing for damage or debris.
4. Clean Housing: Thoroughly clean the pump housing and inspect the faceplate for wear or scoring.
5. Install Key/Pin: Insert the new key/pin into the drive shaft slot, ensuring it is seated properly.
6. Lubricate New Impeller: Apply marine-grade water-resistant grease to the impeller blades and housing to ease installation and prevent dry-start damage.
7. Install Impeller: Align the impeller with the key/pin and carefully slide it onto the drive shaft, rotating the blades in the correct direction as specified in your manual.
8. Reassemble Pump Housing: Replace the faceplate and pump housing cover, tightening bolts to manufacturer torque specifications in a cross pattern.
9. Reinstall Lower Unit: Attach the lower unit back to the engine, ensuring proper alignment and secure fastening.
10. Test Operation: Reconnect the battery, start the engine in a test tank or on muffs, and verify strong water flow from the tell-tale indicator.
11. Check for Leaks: Inspect all connections and seals for any water leakage during operation.
12. Final Inspection: Run the engine for several minutes and monitor cooling system performance before returning to normal use.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Yamaha engine?
A: Cross-reference your engine model and year with the compatibility table above. You can also verify by checking your engine's parts diagram using your serial number or comparing the OEM part number 6H3-44352-01 stamped on your original impeller.

Q: How often should I replace my water pump impeller?
A: Most manufacturers recommend replacing the impeller every 2-3 years or 200-300 operating hours, whichever comes first. If you frequently operate in sandy or debris-filled water, inspect and replace more frequently to prevent cooling system failure.

Q: What are the signs of a failing impeller?
A: Common symptoms include weak or no water stream from the tell-tale, engine overheating, steam from the engine, or reduced power. If you notice any of these signs, shut down immediately and inspect the impeller.

Q: Can I use this impeller on both 2-stroke and 4-stroke Yamaha engines?
A: Yes, this impeller is designed to fit both 2-stroke and 4-stroke Yamaha outboards within the specified HP range (40-70 HP) and model series listed in the compatibility table.

Q: Is the key/pin included, or do I need to order it separately?
A: The key/pin is included with this impeller kit. You do not need to purchase it separately.

Q: What's the difference between OEM and aftermarket impellers?
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.