Water Pump Impeller Kit – Fits Yamaha 4-Stroke F75, F80, F90, F100 Outboard Motors (Replaces 67F-W0078-00-00)

Water Pump Impeller Kit – Fits Yamaha 4-Stroke F75, F80, F90, F100 Outboard Motors

This water pump impeller repair kit provides a complete solution for servicing the cooling system on Yamaha 75-100 HP 4-Stroke outboard motors (1999–2017). It is designed to fit F75, F75A, F80, F90, F90A, and F100 series engines, ensuring reliable performance and proper engine cooling.

The kit serves as a direct replacement for Yamaha OEM part 67F-W0078-00-00 and aftermarket parts from Sierra (18-3409, 18-3451), Mallory (9-48608), and Red Rhino (YA-WP-06).

• Includes all necessary gaskets, bolts, and washers for a complete installation.
• Features a durable neoprene impeller for efficient water flow and long service life.
• Manufactured to meet or exceed OEM specifications for fit and function.

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 x Impeller (67F-44352-00-00)
• 1 x Wear Plate (67F-44323-00-00)
• 1 x Insert Cup (67F-44322-00-00)
• 1 x Impeller Key (90280-04M04-00)
• 1 x O-Ring (93210-46044-00)
• 2 x Bolt (90119-08M87-00)
• 2 x Bolt (90119-08M13-00)
• 1 x Gasket, Water Pump (688-44315-A0-00)
• 1 x Gasket, Water Pump (688-44324-A0-00)
• 1 x Gasket, Water Pump (688-44316-A0-00)
• 4 x Washer, Bolt (90209-08M02-00)

Installation Guide

1. Safety First: Disconnect the negative battery cable before starting work.
2. Access the Pump: Lower and remove the outboard's lower unit (gearcase) to access the water pump assembly. You may need to disconnect the shift linkage.
3. Disassemble Housing: Carefully unbolt and slide the water pump housing off the driveshaft. Take note of the position of all parts.
4. Remove Old Components: Remove the old impeller, wear plate, insert cup, gaskets, and O-rings from the assembly.
5. Clean and Inspect: Thoroughly clean all surfaces of the housing and base. Inspect the housing for any warping, cracks, or scoring. Replace if damage is found.
6. Install New Gaskets and Plate: Place the new water pump gaskets and wear plate onto the pump base, ensuring correct alignment.
7. Install New Impeller: Install the new woodruff key into the driveshaft slot. Slide the new impeller onto the shaft, aligning it with the key.
8. Install Cup and Housing: Place the new insert cup into the housing. Lubricate the inside of the cup and the impeller to ease installation, then slide the housing down over the impeller while turning the driveshaft clockwise to seat the vanes.
9. Secure Housing: Reinstall and tighten the housing bolts to the manufacturer's recommended torque specifications.
10. Reassemble Lower Unit: Reattach the lower unit to the outboard, making sure to correctly reconnect the shift shaft and any other linkages.
11. Test Operation: Reconnect the battery. Start the engine using a water supply (flusher or test tank) and verify a strong, steady stream of water from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this kit will fit my Yamaha engine?

A: The surest way is to check the compatibility chart on this page. Match your engine's model, horsepower, and year range with the listed models. You can also cross-reference the OEM part number (67F-W0078-00-00) with your engine's service manual or parts diagram.

Q: What are the signs that my water pump impeller is failing?

A: The most common symptoms include the engine overheating at idle or low speeds, and a weak or nonexistent water stream from the "tell-tale" outlet. A brittle or cracked impeller can't pump water efficiently, leading to poor engine cooling.

Q: How often should I replace the water pump impeller?

A: As a general maintenance guideline, it's recommended to inspect and likely replace the impeller every 1-2 years or every 100-200 hours of use, whichever comes first. This interval can be shorter if you frequently operate in sandy or silty water.

Q: OEM vs. Aftermarket?

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.