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Description
Water Pump Impeller Kit – Fits Johnson/Evinrude 40-75 HP (Replaces 389133, 387326, 18-3325)Water Pump Impeller Kit Fits Johnson Evinrude 40 75 HP This water pump impeller kit is engineered for Johnson Evinrude 40 75 HP 2 Stroke outboard engines, covering models from 19601997. It is designed with a specific focus on 2 cylinder and 3 cylinder Loopcharged models manufactured between 1975 and 1988. This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Johnson Evinrude 389133, 387326, 387217, GLM 12232,
Water Pump Impeller Kit – Fits Johnson/Evinrude 40-75 HP
This water pump impeller kit is engineered for Johnson/Evinrude 40-75 HP 2-Stroke outboard engines, covering models from 1960–1997. It is designed with a specific focus on 2-cylinder and 3-cylinder Loopcharged models manufactured between 1975 and 1988.
This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Johnson/Evinrude 389133, 387326, 387217, GLM 12232, and Sierra 18-3325.
- Designed for direct OEM replacement installation.
- Manufactured to meet or exceed original equipment specifications.
- The core component is the water pump impeller, crucial for engine cooling.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 389133 |
| Johnson/Evinrude | 387326 |
| Johnson/Evinrude | 387217 |
| Johnson/Evinrude (OEM) | 0389133 / 0387326 |
| GLM | 12232 |
| Sierra | 18-3325 |
| AM | AM389133 |
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 | Outboard | 40 | 2-Stroke | 1960-1997 | 389133, 387326 | |
| Johnson/Evinrude | Outboard | 45 | 2-Stroke | 1960-1997 | 389133, 387326 | |
| Johnson/Evinrude | Outboard | 48 | 2-Stroke | 1960-1997 | 389133, 387326 | |
| Johnson/Evinrude | Outboard | 50 | 2-Stroke | 1960-1997 | 389133, 387326 | |
| Johnson/Evinrude | Outboard | 55 | 2-Stroke | 1960-1997 | 389133, 387326 | |
| Johnson/Evinrude | Outboard | 60 | 2-Stroke | 1960-1997 | 389133, 387326 | |
| Johnson/Evinrude | Outboard | 65 | 2-Stroke | 1971-1978 | 389133, 387326 | 2-cyl models |
| Johnson/Evinrude | Outboard | 70 | 2-Stroke | 1971-1978 | 389133, 387326 | 3-cyl models |
| Johnson/Evinrude | Outboard | 75 | 2-Stroke | 1971-1978 | 389133, 387326 | 3-cyl models |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Water Pump Impeller Kit |
| Installation | Direct OEM replacement |
| Other Technical Attributes | Manufactured to OEM specifications in ISO9002 certified factory |
Package Contents
The kit typically includes:
- 1 x Water Pump Impeller (389133)
Installation Guide
- Safety First: Before starting, disconnect the engine's battery terminals to prevent accidental starting.
- Access the Lower Unit: Shift the outboard into neutral. Remove the bolts securing the lower unit (gearcase) to the upper engine housing.
- Remove the Lower Unit: Gently lower the gearcase away from the engine. The driveshaft will disengage from the powerhead.
- Open the Water Pump: Locate the water pump housing on top of the gearcase. Remove the bolts securing the housing cover.
- Extract the Old Impeller: Lift off the housing and slide the old impeller off the driveshaft. Note the direction of the vanes as you remove it. Clean any debris from the housing and wear plate.
- Install the New Impeller: Lightly lubricate the new impeller and the inside of the housing. Slide the new impeller onto the driveshaft, turning the shaft clockwise to set the vanes in the correct direction.
- Reassemble the Pump: Replace any gaskets and O-rings (if included in your kit). Securely bolt the housing back into place.
- Reinstall the Lower Unit: Carefully guide the driveshaft, water tube, and shift shaft back into place and bolt the lower unit to the engine.
- Test Operation: Reconnect the battery. With the outboard in water or connected to a proper flush device, start the engine and verify a steady stream of water from the tell-tale outlet.
Troubleshooting & FAQ
Q: How do I confirm this impeller kit fits my Johnson/Evinrude engine?
A: First, check the Compatible Engine Models table to see if your HP and year range are listed. This kit is primarily for 40-75 HP 2-Stroke models (1960-1997) and specifically for 2-cyl/3-cyl Loopcharged models (1975-1988). The most reliable method is to cross-reference your engine's original part number with those listed, such as 389133 or 387326.
Q: What are the signs of a failing water pump impeller?
A: The most common signs of a worn or damaged impeller are the engine overheating at idle or low speeds, and a weak or inconsistent water stream from the "tell-tale" cooling system outlet. In severe cases, the engine can overheat quickly, causing significant damage.
Q: How often should I replace the water pump impeller?
A: For preventative maintenance, it is highly recommended to inspect the impeller annually and replace it every 1-2 years or 100-200 hours of use. Replacement frequency should be increased if you operate primarily in saltwater or in water with heavy sediment.
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
Based on 1716 reviews
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Product Reviews
★★★★★ 5
Bang for buck
Size: 11SMax-24Pack
You get a lot for the price. And it fits. Recommended. It is a little noisier than the original bit functions are the same
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Reviewed in the United States on January 10, 2026
★★★★★ 5
Awesome robo-vac/mop with rotating mop head/no pads.
Size: E25 Black
I owned a Narwal Freo for 1 year and it died right after the warranty period was up. Tried replacing the battery but that did not fix the issue so I had to purchase another one. I noticed this eufy had high reviews and the 1 star reviews seemed to be just isolated issues so I purchased this one. Right away I noticed that the instructions/setup was much more simple. Second this one has a big wide mop roller on the front and after mopping I didn't see the mop streaks in circular patterns on the floor like I did with the Narwal as it had two rotating mop heads on the front so the single mop roller seems to be a better solution. Setup consisted of removing protective wrappers off of the tanks and base station, filling up the clean water tank, installing the detergent bottle and plugging it in. Next I downloaded the app and connecting the vac/mop to my network. This was SIMPLE to say the least. From there I could have just clicked clean on the app and it would clean the entire house. However, mapping gives you more flexibility when planning your cleaning ritual. You can define no go zones and clean rooms in any order you choose. I have a shedding dog so I have a separate robovac to clean up the dog hair prior to vac/mopping. This is a MUST with any robovac/mop combo as the dog hair on the floor will mix with the water and detergent and eventually prevent the mop from doing a good job. It will make a mess in the bottom tray of the base station too. I learned this through experience and reading all the one star reviews from customers. Robovac only cleaners last a LONG time. I had one that is still working great for over 3 years. All I had to do was replace the battery so it doesn't have to pause the job to recharge. So the mapping only took 4 minutes and it was pretty accurate. After the mapping I defined the room boundaries and renamed the rooms. Next I sent it off to clean and it did a FABULOUS JOB! No streaks and the floors are clean. The noise level is really low and more quiet than the Narwal. The other thing I noticed is it didn't use up much water to rinse the mop while cleaning. The Narwal used a lot of water and I was always dumping dirty water and adding fresh. I will always have a robomop and robovac as they save me so much time by not having to do this job twice a week. Connectivity to my network is excellent as it's in a location far from the router. This vac/mop is a good value for the money if IT LASTS BEYOND 1 YEAR. I will update this review as necessary and if it fails right after the warranty period I will report and downgrade this review to 1 star. These companies need to learn the importance of reliability and correct these issues. When I first reviewed the NARWAL it had almost a perfect 5 star review from all customers. After the year was up and it failed that star rating went down to 3+ stars. Most reviews reported their robovac/mop just died like mine did after the warranty period. I downgraded my review and reported the issue. I'm hoping this one will last because at the moment I am VERY satisfied with it like most customers. This model has been on the market much longer at the time of purchase so I would suspect if there were any reliability flaws they would have been addressed and corrected by now. We shall see. At this time I highly recommend!!
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Excellent Robot Vacuum, Especially for the Price
Size: 11S, Size: 11S
I have been an iRobot Roomba buyer since 2007. My last Roomba bit the dust this month, and I did a ton of research before buying a replacement. I went with the Eufy for a few reasons: price point, cleaning power, quietness, and sleek design.
Price: Very reasonable. Almost reasonable enough that I'd consider getting another one for my second floor. For now I'll just carry it upstairs.
Cleaning power: This thing sucks... It's suction is much stronger than my Roombas have had. It picks up so much dust and pet hair. We do a full vacuum every other week with my Dyson, so I think of the robot vacuum as a supplemental vacuum. I was shocked at how much was in the dustbin after it's inaugural cleaning! The picture attached to this is from that cleaning. It also gets a ton of dust in the little dust filter. In one of the video reviews I watched, the reviewer said it didn't pick up anything in that dust filter... So maybe my carpet is particularly dusty, because it has a thick layer after each cleaning.
Quietness: I work from my home office, and this thing is quiet enough that I don't even turn it off during conference calls. This might be the thing I am most impressed with. My last Roomba was LOUD-- you couldn't even have a conversation with someone in the same room, let alone someone on speakerphone.
Sleek design: I love/hate this. It definitely looks modern and cool, and more like an art piece than an appliance, but it shows all my finger prints, and now I keep a glasses cleaning cloth nearby so I can rub it down. I suppose if I only use the remote and never pick it up, this won't be an issue.
A few considerations: I was hoping to find a robot vacuum that wouldn't eat my carpets' tassels, but I don't think that vacuum exists. I have only used the Eufy 4 times so far, and it doesn't always get its brushes wrapped around the long tassels, but it does sometimes. It seems to realize it sooner than my Roomba did at least. The Roomba would sometimes rip gobs of them off in a single cleaning. I try to tuck them under the edge of the rug and that doesn't seem to bother Eufy. It has pulled off probably 2 tassels so far.
The cleaning pattern seems pretty random. I saw some other vacuums that chart out complex maps of your home, and Eufy doesn't seem to do that. But, it doesn't seem to matter, because it still hits every spot in the rooms.
I'm a little concerned about durability. My Roombas ran for many, many years with easily replaceable parts. We'll have to see if Eufy has the same longevity.
All in all- I'm very happy with my purchase and definitely recommend it!
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Reviewed in the United States on September 7, 2018
★★★★★ 4
Robot Vacuum With Decent Cleaning but Too Much Maintenance
Size: E28
This robot vacuum was fairly simple to set up, and the battery life is actually pretty good. When it comes to cleaning, it does a solid job picking up dirt and debris, and overall the suction works well for everyday vacuuming.
However, the navigation and sensors really missed the mark for me. It struggled to recognize certain items around my house. For example, the mat under my cat’s food bowl kept getting caught because the vacuum didn’t detect it properly. It also had trouble recognizing furniture like my ottomans and would repeatedly run into them.
Another issue was how it handled different floor types. It’s supposed to be able to recognize surfaces like carpet versus hard flooring, but that didn’t always work correctly. At one point it even tried cleaning my carpet when it shouldn’t have. It also struggled with room detection and didn’t consistently recognize different areas of my home, even when placed directly in them.
I bought this hoping for more of a “set it and forget it” type of appliance since I work a lot and wanted something that would keep my floors clean without much attention. Unfortunately, that wasn’t my experience. I often had to redo the mapping or move the vacuum around so it could recognize spaces and objects properly.
There were a few positives though. The app is very helpful and easy to use, and the vacuum communicates clearly through notifications. It lets you know when things like the water level or cleaning bin need attention, which I appreciated. Maintenance like emptying it isn’t required very often either.
It’s also a little noisy. Not extremely loud, but it talks frequently and you definitely know when it’s running. Since I work third shift and sleep during the day, that was a bit frustrating.
Another issue was that it struggled to cross small entry thresholds between rooms. Even a small lip between rooms would sometimes stop it from moving into another space.
In the end, I decided to return it. While it does vacuum fairly well, the navigation issues and constant adjustments made it more of a hassle than a convenience. For the price, I expected something more hands-off, and unfortunately it required more attention than it was worth for me.
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Great and Easy to Use!
Size: 11S
Background: I have a shedding dog, so I bought this in hopes that by running it every-day, it would pick up on some of the dog hair on the floor.
What I like:
-VERY easy to use.
-easy to follow instructions
-has a sticker on the bottom so if it ever stops and beeps, you can flip it over and it says exactly what the beeps mean (one beep means one thing, two beeps means another--which is SUPER helpful!).
-color on top clearly shows what mode it is in (blue-ready to go, orange-needs to charge, red-problem to fix-such as emptying the tray).
-very quiet. I can work on stuff with it in the room and it does not bother me at all (my dog also does not mind it).
-works great on white carpet and easily transitions from my living room to dining room (which has a slight bump).
-when its low on battery, it does not die where it is at, it just turns off the vacuum then finds the home doc and charges itself.
-just works really well. I run it everyday and I am impressed by how much stuff it gets (especially when it goes under things such as the couch).
-if it gets caught on a cord, it usually takes 5-10 seconds but then it stops the suctioning and moves away (releasing the cord or other item). However if you have a small cord you should put it up (and you should regardless, I just noticed it doing this a few times and thought it was neat, but I do try to pick up all cords).
What could be improved:
-nothing really in particular to this.
-It does not work well on anything black, but this is true for all robot vacuums. It sometimes gets stuck when it goes on the black carpet we have with the black chairs (I suspect because it can not detect them), but this has not happened often. My dog has a black mat for her food and water and it always bumps into it and spills the water, but again, this would occur with any robot vacuum.
-Also, make sure the doc is against a wall because otherwise it will move and never charge (self explanatory, but I did not do the first time and it kept trying to doc and was just pushing the doc around the floor).
-Finally, you do have to dump out the vacuum particles almost every time you run it (if you do a full circle/battery cycle). It is really easy to dump and beeps when it needs to be emptied. Again, nothing really negative, just something to note.
Overall, I really like this! It does a nice job cleaning up the dog hair and other things that get on my floor and saves me a lot of time not vacuuming daily. If you have a dog, I would watch them with this first before you use it. My dog was initially scared of it but sniffed it's "butt" and now they are cool and she does not mind it at all. Pleased with this product and would recommend! :)
**UPDATE**
On another note, Eufy has amazing customer service! I received an email from them addressing each of my "what could be improved" components with more information on the product. Very impressed.
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Reviewed in the United States on August 5, 2018
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