SKU: 92750090292

Water Pump Impeller Kit – Fits Johnson/Evinrude 4, 4.5, 5, 6, 8 HP (Replaces 396644, 389844)

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Description

Water Pump Impeller Kit – Fits Johnson/Evinrude 4, 4.5, 5, 6, 8 HP (Replaces 396644, 389844)Water Pump Impeller Kit Fits Johnson Evinrude 4, 4. 5, 5, 6, 8 HP (Replaces 396644, 389844) This water pump impeller repair kit provides a complete solution for servicing the cooling system on a wide range of Johnson and Evinrude outboard motors. It is designed to fit various 2 stroke and 4 stroke models from 4 HP to 8 HP manufactured over several decades. This kit serves as a direct replacement for Johnson Evinrude part numbers 396644, 389844, and

Water Pump Impeller Kit – Fits Johnson/Evinrude 4, 4.5, 5, 6, 8 HP (Replaces 396644, 389844)

This water pump impeller repair kit provides a complete solution for servicing the cooling system on a wide range of Johnson and Evinrude outboard motors. It is designed to fit various 2-stroke and 4-stroke models from 4 HP to 8 HP manufactured over several decades.

This kit serves as a direct replacement for Johnson/Evinrude part numbers 396644, 389844, and 765603, as well as Sierra part number 18-4529.

  • Includes all necessary components for a standard water pump rebuild: impeller, housing, plate, gaskets, and hardware.
  • Engineered as a direct OEM replacement for straightforward installation.
  • Restores cooling performance to prevent engine overheating and ensure reliability.

Part Number Cross-Reference

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

Brand Part Number
Johnson/Evinrude 396644
Johnson/Evinrude 389844
Johnson/Evinrude 765603
Sierra 18-4529

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.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Johnson/Evinrude Various 4 2-Stroke 1986-1992 396644, 389844
Johnson/Evinrude Various 4.5 2-Stroke 1980-1997 396644, 389844
Johnson/Evinrude Various 5 2-Stroke 1980-1983, 1996-1998 396644, 389844
Johnson/Evinrude Various 5 4-Stroke 1999-2001 396644, 389844
Johnson/Evinrude Various 6 2-Stroke 1984-2005 396644, 389844
Johnson/Evinrude Various 6 4-Stroke 1999-2004 396644, 389844
Johnson/Evinrude Various 8 2-Stroke 1980-2005 396644, 389844

Technical Specifications

Specification Value
Product Type Water Pump Impeller Repair Kit
Installation Direct OEM Replacement
Housing Material Plastic
Weight Approximately 0.17 kg (6.2 oz)

Package Contents

  • 1 x Impeller Assembly (389576, 18-3091)
  • 1 x Impeller Housing Plate (324640, 18-4578)
  • 1 x Impeller Housing Cup (324641, 18-4551)
  • 1 x Impeller Housing Gasket (325040, 18-99156)
  • 1 x Drive Key (331130, 18-3026)
  • 1 x Grommet (321129, 18-1827)
  • 1 x Grommet (302497, 18-3329)
  • 1 x Screws (324430, 18-4277)
  • 1 x O-Ring (303191, 18-7413)
  • 1 x Gasket (311598) - Note: included in some kits, may vary.

Installation Guide

  1. Safety First: Disconnect the battery and shift the outboard into neutral.
  2. Access the Pump: Unbolt and carefully remove the lower unit (gearcase) from the outboard's midsection. You may need to disconnect a speedometer tube.
  3. Disassemble Housing: Remove the bolts securing the water pump housing cover to access the impeller.
  4. Remove Old Components: Note the rotational direction of the old impeller's vanes before removing it. Take out the old gaskets, wear plate, and drive key.
  5. Clean Surfaces: Thoroughly clean all mating surfaces, ensuring no old gasket material, sealant, or corrosion remains.
  6. Install New Parts: Place the new gasket and wear plate onto the gearcase. Slide the new drive key onto the driveshaft.
  7. Insert New Impeller: Lubricate the new impeller and housing interior with a marine-safe lubricant. Install the impeller by pushing down while turning the driveshaft clockwise to bend the vanes correctly.
  8. Reassemble Housing: Install the new housing cup and gasket, then secure the housing cover with the provided screws, tightening them to the manufacturer's specified torque.
  9. Reinstall Lower Unit: Carefully guide the lower unit back into place, ensuring the driveshaft, shift shaft, and water tube align correctly. Bolt it securely.
  10. Test Operation: Reconnect the battery. Start the engine in water and immediately verify a strong, steady stream of water is exiting the tell-tale port.

Troubleshooting & FAQ

How do I confirm this kit fits my engine?

First, check the "Compatible Engine Models" table above and match your engine's horsepower, stroke, and model year. For Johnson/Evinrude owners, our serial number guide can help you verify your model details.

What are the signs my water pump impeller needs replacement?

Common signs of a failing impeller include a weak or intermittent water stream from the engine's tell-tale outlet, the engine overheating alarm sounding, or steam from the exhaust. Proactive replacement is recommended to avoid engine damage.

How often should I replace the water pump impeller?

As a general maintenance rule, it is best practice to inspect your impeller annually and replace it every 1-2 years or every 100-200 hours of use. Replacement frequency should be increased if you operate in sandy, silty, or saltwater conditions.

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 92750090292

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Courtenay
San Leandro, US
★★★★★ 3
Good-ish
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🌶️ 0/5 ⭐️ 3/5 I will preface this by saying I am not a huge RH fan. However it didn’t feel like a RH quite yet. The relationships and plot are all building in this book. At first I was thinking things were happening stupid fast since she’s had zero interaction with another being and has been tortured her whole life, and I believe they were for one side of the relationship, but by 50% things moved too slow lol. Idk I think the main 1-3 guys I’m actually interested in more than the others didn’t get enough air time so I hope the next book things start moving with them since it ended the way it did.
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Reviewed in the United States on April 12, 2025
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Florina3090
Waukegan, US
★★★★★ 5
Can I have Term 2 now?
Format: Kindle
This is by far my favorite book of Lyra's to date. I gobbled this book up so fast, I was so upset I finished it. I know this is going to be a book I reread, just like Fate Hollow Academy. I loved Fate Hollow Academy, so I was excited when Lyra announced she was taking us readers back to Kalista. Although the characters from Fate Hollow are mentioned several times throughout the book, this book is about Pandora and her love interests in the Demon Realm. Before you deep dive into this book, definitely look at the trigger warnings before you start. When Lyra says there's dark themes in this book, she meant it. Also, just know this book does end on a cliffhanger and will probably leave you with as many questions as it did me. Below may contain some minor spoilers, so keep that in mind if you want to keep reading my review. Pandora's first 2 decades of her life are full of torture, hatred, and confinement in a cellar. That is until her father finds her and brings her into the world she was supposed to live in. Because of her upbringing she wasn't acclimated to the Demon world and the way their society works so when she is offered the chance to go to a Demon Reform Accademy, she accepts it to learn the ways of society and how she is supposed to feed. Pandora isn't like the other common demons in this world, no. She, like her father Death, are soul-eaters. Pandora is too scared to release her powers because she doesn't want to kill anyone, so she needs to learn how to feed off of a piece of soul instead of taking the whole thing. Because of who her father is, she's classed as a Noble, and while she doesn't agree with her fellow Noble students, who look down on the "lower" class, she also is faced with 3 Demons who hate her for being a Noble. Theses a lot of back and forth tension which these 3 demons who have issues of their own. One is obsessed with her, and wants to know all of her secrets. One leaks fear all over the place, but also is scared of the "princess" -wink- -wink-. One is a complete drunk who doesn't like her just because he's got family Noble problems. Don't worry, there are 2 other demons who are just the sweetest towards her. One who will get vengeance for anything done to her, he's got Golden Retriever energy around her and touch her and die energy for anyone around her. Finally, there is one who is friends with her even when the whole school is scared of her, who brings her into his dreams and will create nightmares for those who bother her.
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Mystery_Machine_Gang
Phoenix, US
★★★★★ 4
This was more than I expected...
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So...I finished this book at nearly 2am! It was just that hard to put down. I loved that it's set in the same world as Fates Hollow but in the future. Poor Pandora has been through so much but there's light at the end of the tunnel for her. She finally meets her dad and it turns out he's amazing. In order to help her learn about demon society and how to control her magic he sends her to the Demon Reform Academy. There she meets 2 awesome demons who help her and care for her. She also sadly meets her 3 tormentors. I will say though that while they do bully Pandora they also rescue her several times and defend her. They too have traumatizing pasts and can't see the good that is in front of them. Of course demon society needs to be shaken up too since that's part of the problem. I really enjoyed this read. I teared up a few times throughout the book but I liked the characters and that ending...well it looks like 3 in denial are going to need to grovel hard.
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Reviewed in the United States on June 1, 2024
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Krystle
Phoenix, US
★★★★★ 5
MUST READ BOOK!!
Format: Kindle
I was in a huge reading slump, when one of my favorite authors recommended this book in her readers group (The amazing Marie Mistry 🫶) and I absolutely DEVOURED this book. Now I’m in the club crying about having to wait until December for Term 2! This book is about a girl named Pandora who has suffered a life that nobody would ever wish to have. This book is about Pandora learning how to live, learning about herself and what she really wants. She has a long journey to find out all of these things, but she took the first steps in this book and it was beautiful to read. Some of the men in this book are our dream men, Hunter and Reed 😍 and then we have the men who need some work and who we all really just want to beat up until they admit what they really feel, Skel, Bram and Dexter. But that cliffy was a killer and I absolutely cannot wait until the next book!! You have written an absolute dream of a book Lyra and I eagerly await the next installment in this series!!!
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Reviewed in the United States on June 7, 2024
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GhostHina
Louisville, US
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I could not stop reading. It was so refreshing to have a series start so completely different than most fated mates/fantasy academy rh I’ve been reading. From the desert scenery to the magic and feeding plus the psychological trauma the characters are there to deal with. Pandora is absolutely adorable and I totally relate to hiding behind my hair. I love that she’s literally the most scary type of demon but it’s not the usual “badass mc” persona (which I do love a badass that can fend for herself and kick ass from the start but it was a nice change of pace). I’m not usually a big fan of bully within the harem but each character has their reasons for their actions and also conflicting feelings about them. I adore Dex and Reed! Complete opposites but their personalities and inner monologues made them instant favs. I can’t wait to see the character growth with the guys and continued strength for Pandora. The captivating characters and references to the Fate Hallow series added so much depth and now I need another reread while I wait for book 2. The concept of magic and the unique feeding habits of the demon characters were intriguing. I can't wait for the next book to continue this thrilling journey. In summary, this book is a must-read for fantasy and magic academy rh fans. With its enchanting characters, nods to the Fate Hallow series, and imaginative concepts, it offers an immersive reading experience that hwill leave you craving for more.
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