688-44352 Water Pump Impeller for Yamaha 60HP 70HP C75HP P75HP C80HP 90HP B90HP C90HP E75HP C85HP CV85HP | JLM Marine

Water Pump Impeller – Fits Yamaha 2-Stroke 60–90 HP Outboard Motors

This high-quality aftermarket water pump impeller is designed to fit a wide range of Yamaha 2-stroke outboard motors from 60 HP to 90 HP, including models C75, P75, C80, B90, C90, E75, C85, and CV85. Engineered to meet OEM specifications, this impeller ensures reliable cooling system performance and protects your engine from overheating.

This impeller directly replaces Yamaha OEM part numbers 688-44352-03-00 and 688-44352, as well as aftermarket equivalents from CEF, Sierra, and Mallory. It provides a cost-effective solution without compromising quality or fit.

• 6-blade rubber impeller designed for optimal water flow
• Precision-molded construction for exact OEM fit and durability
• Essential maintenance part to prevent engine overheating

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

This package includes:

• 1 × Water Pump Impeller

Installation Guide

1. Disconnect the fuel line and remove the engine cover to access the lower unit. Ensure the engine is cool before starting work.
2. Drain the lower unit gear oil by removing the drain and vent screws. Disconnect the water pump hose if applicable.
3. Remove the lower unit by loosening the mounting bolts that attach it to the mid-section. Carefully pull the unit away from the drive shaft.
4. Disassemble the water pump housing by removing the retaining bolts. Take note of the orientation of components for reassembly.
5. Remove the old impeller from the pump housing, checking for worn or damaged blades. Inspect the pump housing and plate for wear or corrosion.
6. Lubricate the new impeller with water pump grease or glycerin to ease installation and prevent dry running. Do not use petroleum-based lubricants.
7. Install the new impeller into the housing, ensuring the blades face the correct direction of rotation. Align the drive pin with the slot in the impeller hub.
8. Reassemble the water pump housing and secure it with the retaining bolts, torquing to manufacturer specifications. Ensure all O-rings and gaskets are properly seated.
9. Reattach the lower unit to the mid-section, carefully aligning the drive shaft and water tube. Tighten all mounting bolts evenly.
10. Refill the lower unit with the correct gear oil through the lower drain hole until it flows from the vent hole. Replace both drain and vent screws.
11. Reconnect the fuel line and start the engine in a test tank or on-water to verify proper water flow from the telltale outlet. Check for leaks around the pump housing.
12. Monitor engine temperature during the first few runs to ensure the cooling system is functioning correctly.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Yamaha outboard?
A: Cross-reference your engine model and year with the compatibility table above. You can also verify by checking your current impeller's OEM part number against the cross-reference list, or consult your engine's parts diagram using the Yamaha resources linked in this listing.

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

Q: What are the signs that my impeller is failing?
A: Common symptoms include reduced or no water flow from the telltale (pilot hole), engine overheating, steam from the engine, or loss of power. If you notice any of these signs, inspect and replace the impeller immediately to avoid serious engine damage.

Q: Can I reuse the old gaskets and seals during installation?
A: No, always replace gaskets, O-rings, and seals when servicing the water pump. Reusing old seals can lead to leaks and improper sealing, compromising cooling performance.

Q: Why are some impeller blades bent or deformed out of the package?
A: Slight blade deformation from packaging is normal and will not affect performance. The blades will assume their correct shape once installed and the engine is running with water flow.

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.