682-44352;682-44352-01 Outboard Rubber Impeller with Key/Pin for Yamaha F9.9 FT9.9 T9.9 | JLM Marine

Outboard Rubber Impeller with Key/Pin – Fits Yamaha 2-Stroke & 4-Stroke 9.9–15 HP (1984–2003)

This aftermarket rubber impeller with key/pin is engineered for Yamaha 2-stroke 9.9/15 HP and 4-stroke 9.9 HP outboard engines spanning model years 1984 through 2003. It delivers reliable water pump performance across F9.9, FT9.9, and T9.9 series motors, ensuring consistent cooling under demanding marine conditions.

Direct Replacements: 682-44352, 682-44352-01. This impeller is built to OEM specifications and includes both the rubber impeller and drive key/pin for straightforward installation.

• Package includes: Rubber impeller and drive key/pin
• Fits both 2-stroke and 4-stroke Yamaha outboards (9.9–15 HP)
• Drop-in replacement for original equipment water pump service

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket sources.

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 × Rubber Impeller
• 1 × Drive Key / Pin

Installation Guide

1. Disconnect the fuel line and remove the lower unit: Shift into forward gear, remove retaining bolts, and carefully separate the lower unit from the mid-section.
2. Access the water pump housing: Remove the water pump cover plate or housing bolts to expose the old impeller.
3. Remove the old impeller: Note the direction of the vanes. Use pliers if needed, taking care not to leave broken vane fragments in the housing.
4. Clean the housing and inspect for wear: Remove debris, old gasket material, and check the pump housing and plate for scoring or damage.
5. Lubricate the new impeller: Coat the impeller vanes and bore with water-resistant marine grease or glycerin to ease installation and protect during initial startup.
6. Install the drive key/pin: Insert the key or pin into the impeller hub slot as specified by your pump design.
7. Insert the new impeller: Align the vanes in the correct rotational direction (typically opposing engine rotation) and gently press into the housing.
8. Reassemble the water pump housing: Install new gaskets, replace the cover plate, and torque bolts to manufacturer specifications.
9. Reattach the lower unit: Align the driveshaft splines, slide the lower unit into place, and secure all mounting bolts evenly.
10. Reconnect the fuel line and test: Run the engine with a flushing attachment or in a test tank, and confirm strong water flow from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Yamaha outboard?
A: Cross-reference your engine model, HP, stroke type, and year with the compatibility table above. You can also verify the OEM part number (682-44352 or 682-44352-01) in your owner's manual or parts diagram.

Q: How often should I replace my water pump impeller?
A: Most manufacturers recommend annual replacement or every 200–300 operating hours, whichever comes first. Inspect more frequently if you operate in sandy or debris-laden water.

Q: What are the signs my impeller is failing?
A: Common symptoms include reduced or no water flow from the tell-tale, engine overheating, weak stream during flush, or visible cracks and missing vane tips during inspection.

Q: Does this kit include the gaskets and seals for the water pump?
A: No. This package contains only the rubber impeller and drive key/pin. Gaskets and seals should be purchased separately or as part of a complete water pump rebuild kit.

Q: Can I use this impeller on both 2-stroke and 4-stroke Yamaha 9.9 HP engines?
A: Yes, this impeller is compatible with both 2-stroke (9.9/15 HP, 1984–1995) and 4-stroke (F9.9, FT9.9, T9.9) models as listed in the compatibility table.

Q: What is 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.