Water Pump Impeller – Fits Johnson/Evinrude 55-75 HP (Replaces 0765431, 0777824, 0382547)

Water Pump Impeller – Fits Johnson/Evinrude 55-75 HP (Replaces 0765431, 0777824, 0382547)

This water pump impeller is designed for Johnson/Evinrude 55-75 HP, 2-Stroke outboard motors manufactured between 1968 and 1978. It serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring reliable performance for engine cooling systems.

This component is a direct replacement for Sierra 18-3082, GLM 89940, Mallory Marine 9-45213, and SEI Marine 96-366-03AE.

• Engineered for a direct fit with a slotted key drive.
• Constructed from a high-quality, durable neoprene rubber compound.
• Includes one 6-blade water pump impeller for a complete replacement.

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 Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson/Evinrude Serial Number Guide.

Technical Specifications

Package Contents

1 x Water Pump Impeller (Replaces 0765431, 0777824, 0382547)

Explosion Diagram

Installation Guide

1. Safety First: Disconnect the engine's battery cables before beginning work.
2. Access the Lower Unit: Remove the bolts securing the gearcase (lower unit) to the midsection and carefully lower it.
3. Open the Pump Housing: Locate the water pump assembly on top of the gearcase. Remove the bolts holding the pump cover.
4. Remove Old Impeller: Slide the old impeller off the driveshaft. Note the direction of the vanes; the new ones must face the same way.
5. Clean and Inspect: Clean any debris from the pump housing, wear plate, and cover. Inspect for scoring or damage.
6. Install New Impeller: Lightly lubricate the new impeller and housing. Slide the new impeller onto the driveshaft while turning the shaft clockwise to bend the vanes correctly.
7. Reassemble Pump: Secure the pump housing cover, ensuring any seals or gaskets are properly seated.
8. Reattach Lower Unit: Reinstall the lower unit, making sure the driveshaft, shift shaft, and water tube align correctly. Torque bolts to manufacturer specifications.
9. Test Operation: Reconnect the battery. Start the engine using a water supply (flushing muffs) and verify a steady stream of water from the tell-tale port.

Troubleshooting & FAQ

How do I confirm this fits my engine?

Verify your engine's horsepower, stroke, and year fall within the ranges listed in the Compatible Engine Models table. Cross-reference your existing part number with those in our Part Number Cross-Reference table for confirmation.

What are the signs of a failing water pump impeller?

Common symptoms include the engine overheating, a weak or non-existent water stream from the "tell-tale" outlet, and a melted water pump housing. Failure to replace a worn impeller can lead to severe engine damage.

How often should I replace the impeller?

For preventative maintenance, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. More frequent replacement may be necessary if you operate in sandy or silty water.

OEM vs. Aftermarket?

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.

How fast do you ship and how much does it cost?

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.

What is your warranty and return policy?

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.