6E5-44352 Impeller for Yamaha 90 Jet 100B 115A 115B 115C 130B 150A 150F 175D 200A 200C 200F 200G 225A 225B 225C 225D 225G 250A 250B 250G F75 F90 F100B F115A F150A F175 F200C F225A F225B F225C F250A F250B | JLM Marine

Impeller 6E5-44352 – Fits Yamaha 2-Stroke & 4-Stroke Outboards 75–300 HP

This aftermarket water pump impeller is engineered for Yamaha 2-stroke outboards from 90 HP to 300 HP (1984 and up) and 4-stroke models from 75 HP to 250 HP (2000–2018). It delivers reliable cooling performance across V4 and V6 engine configurations, ensuring your outboard runs at optimal temperature under demanding conditions.

Direct replacement for Yamaha OEM part numbers 6E5-44352-00-00 and 6E0-44352-01, as well as Sierra 18-3070 and CEF 500371. This 6-blade neoprene impeller is precision-molded to OEM specifications and includes the drive key/pin for straightforward installation.

• Package includes: Outboard rubber impeller with key/pin
• Material: Durable neoprene construction for extended service life
• Blade count: 6 blades, diameter 89 mm (3.50"), shaft insert 22.8 mm (0.90")

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 × Neoprene Impeller (115–250 HP application)
• 1 × Drive Key / Pin

Installation Guide

1. Disconnect the battery and remove the lower unit from the outboard motor according to your service manual.
2. Drain cooling water from the lower unit and remove the water pump housing cover.
3. Extract the old impeller by carefully prying it off the drive shaft. Inspect the housing for debris or scoring.
4. Clean the pump chamber and drive shaft thoroughly, removing any old gasket material or residue.
5. Lubricate the new impeller blades with glycerin, dish soap, or water pump grease (never petroleum-based).
6. Insert the drive key/pin into the impeller hub, aligning it with the slot on the drive shaft.
7. Install the impeller onto the shaft, rotating it in the correct direction (check your manual) to engage all blades.
8. Fit the pump housing plate and new gasket, ensuring the impeller blades are not pinched or bent backward.
9. Reassemble the water pump cover and torque all fasteners to manufacturer specifications.
10. Reinstall the lower unit onto the outboard and reconnect all linkages and hoses.
11. Refill gear oil if drained, and reconnect the battery.
12. Test the cooling system by running the engine on a flush adapter or in a tank; verify strong water flow from the tell-tale.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Yamaha outboard?
A: Cross-reference your engine model, horsepower, stroke type, and year with the compatibility table above. You can also check your existing impeller's OEM part number (stamped on the hub or listed in your service manual) against our cross-reference table. If your original part is 6E5-44352-00-00, 6E0-44352-01, or equivalent Sierra/CEF numbers, this impeller is a direct fit.

Q: How often should I replace my water pump impeller?
A: Yamaha recommends inspecting the impeller annually and replacing it every 2–3 years or 200–300 hours of operation, whichever comes first. If you run in sandy, silty, or debris-laden water, inspect more frequently. Replace immediately if blades show cracking, missing tips, or significant wear.

Q: What are the signs of impeller failure?
A: Common symptoms include weak or no water flow from the tell-tale (pilot stream), engine overheating alarms, steam from the powerhead, or loss of performance. If you notice any of these, shut down immediately and inspect the impeller and cooling system before further operation.

Q: Can I use petroleum-based grease to lubricate the impeller during installation?
A: No—petroleum products will damage the neoprene and cause premature failure. Use only glycerin, water-based dish soap, or manufacturer-approved water pump grease.

Q: Does this impeller come with a gasket and seal kit?
A: This package includes the impeller and drive key/pin only. Gaskets, seals, and O-rings are sold separately. We recommend purchasing a complete water pump rebuild kit if you are servicing the entire pump assembly.

Q: Is this an OEM Yamaha 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.