Water Pump Impeller – Fits Johnson/Evinrude 65-300 HP (Replaces 5001593, 395864, 397131)

Water Pump Impeller – Fits Johnson/Evinrude 65-300 HP (Replaces 5001593, 395864, 397131)

This water pump impeller is designed for a broad range of Johnson/Evinrude V4, V6 & V8 outboard engines from 65 to 300 HP, covering models from 1979 through 2001, including E-TEC models. It serves as a direct replacement component engineered to meet or exceed original equipment specifications.

This part replaces multiple OEM and aftermarket part numbers, including Sierra 18-3059, GLM 89570, Mallory 9-45206, and Johnson/Evinrude 5001593, 389289, 391538, 395864, 397131, 435821, 439948, 435748, and 394534.

• Installation Method: Direct replacement for a hassle-free fit.
• Material: Constructed from durable, high-strength Neoprene with a solid brass hub for corrosion resistance and longevity.
• Package Includes: 1x Impeller and 1x Impeller Key.

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 Impeller (Replaces 5001593, 389289, 391538, 395864, 397131, 435821)
• 1 x Impeller Key (Replaces 18-3299)

Installation Guide

1. Disconnect the battery and remove the engine cover.
2. Locate and unbolt the lower unit (gearcase) from the upper engine housing.
3. Carefully lower the gearcase to access the water pump assembly.
4. Remove the bolts securing the water pump housing cover.
5. Slide the old impeller off the driveshaft, removing the old key. Note the direction of the old blades.
6. Clean the housing and inspect it for wear, scoring, or damage.
7. Install the new impeller key into the driveshaft keyway.
8. Slide the new impeller onto the driveshaft, aligning the keyway.
9. While rotating the driveshaft clockwise, press down on the pump housing to correctly seat the blades.
10. Re-install the water pump housing and torque bolts to manufacturer specifications.
11. Re-attach the lower unit to the engine, ensuring the driveshaft and water tube align.
12. Reconnect the battery and test the engine in water to verify strong water flow from the tell-tale outlet.

Troubleshooting & FAQ

How do I confirm this impeller fits my engine?
Start by checking your original part number against our cross-reference list, which includes Sierra 18-3059, GLM 89570, Mallory 9-45206, and multiple Johnson/Evinrude numbers like 5001593. Next, verify your engine model and year in the "Compatible Engine Models" table above. If you are still unsure, we recommend consulting a professional mechanic.

What are the signs of a failing water pump impeller?
Common signs include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" outlet, and a brittle, cracked, or deformed appearance on the old impeller's blades upon inspection.

How often should I replace my impeller?
For optimal engine cooling and protection, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of use. Replacement frequency depends heavily on operating conditions such as saltwater versus freshwater use and the amount of debris in the 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.