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Description
Carburetor – Fits Tohatsu/Nissan 4/5 HP Outboards (Replaces 3R1-03200-1, 18-7365)Carburetor Fits Tohatsu Nissan 4 5 HP Outboards This carburetor assembly is a direct fit replacement for Tohatsu, Nissan, and Mercury 4 stroke outboards ranging from 3. 5 to 5 HP. It is engineered to meet or exceed OEM specifications for reliable fuel delivery and performance. It is primarily designed for Tohatsu Nissan MF, MFS, and NSF series, as well as Mercury models using the 803522T part number series. This unit directly replaces OEM part numbers
Carburetor – Fits Tohatsu/Nissan 4/5 HP Outboards
This carburetor assembly is a direct-fit replacement for Tohatsu, Nissan, and Mercury 4-stroke outboards ranging from 3.5 to 5 HP. It is engineered to meet or exceed OEM specifications for reliable fuel delivery and performance. It is primarily designed for Tohatsu/Nissan MF, MFS, and NSF series, as well as Mercury models using the 803522T part number series.
This unit directly replaces OEM part numbers including Tohatsu 3R1-03200-1, 3AS-03200-0, Mercury 803522T series, and Sierra 18-7608, ensuring broad compatibility for hassle-free installation.
- Installation: Direct bolt-on replacement
- Primary Fuel Type: Gasoline
- Manufacturing Standard: Produced in an ISO9002 certified factory
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Tohatsu/Nissan | 3R1-03200-1-00 / 3R1-03200-1 |
| Tohatsu/Nissan | 3AS-03200-0 |
| Mercury | 803522T / 803522T1 / 803522T2 / 803522T03 / 803522T04-T06 |
| Sierra | 18-7608 |
| Other Aftermarket | AM982217, MAL9-34001 |
Compatible Engine Models
Confirm your engine model/year in the table below.
For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
Tohatsu/Nissan Models
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Tohatsu | MF3.5 | 3.5 | 4-Stroke | 3R1-03200-1 |
| Tohatsu | MFS4 | 4 | 4-Stroke | 3R1-03200-1 |
| Tohatsu | MFS4A / MFS4A2 | 4 | 4-Stroke | 3R1-03200-1 |
| Tohatsu | MFS4B / MFS4C | 4 | 4-Stroke | 3R1-03200-1 |
| Tohatsu | MFS5 | 5 | 4-Stroke | 3R1-03200-1 |
| Tohatsu | MFS5A / MFS5A2 | 5 | 4-Stroke | 3R1-03200-1 |
| Tohatsu | MFS5B / MFS5C | 5 | 4-Stroke | 3R1-03200-1 |
| Nissan | NSF4A / NSF4A2 | 4 | 4-Stroke | 3R1-03200-1 |
| Nissan | NSF4B / NSF4C | 4 | 4-Stroke | 3R1-03200-1 |
| Nissan | NSF5A / NSF5A2 | 5 | 4-Stroke | 3R1-03200-1 |
| Nissan | NSF5B / NSF5C | 5 | 4-Stroke | 3R1-03200-1 |
Mercury Models
| Brand | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Mercury | 3.5 | 4-Stroke | 803522T25 | For S/N 0R44803 and up |
| Mercury | 4 | 4-Stroke | 8M0053670 | For all US models |
| Mercury | 5 | 4-Stroke | 803522T01 | US EPA lower S/Ns |
| Mercury | 5 | 4-Stroke | 803522T02 | US EPA higher S/Ns |
| Mercury | 5 | 4-Stroke | 803522T03 | All US S/Ns |
| Mercury | 5 | 4-Stroke | 803522T04 | EU engine higher S/Ns |
| Mercury | 5 | 4-Stroke | 803522A04 | EU lower S/Ns |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Carburetor Assembly |
| Installation | Direct bolt-on replacement |
| Fuel Type | Gasoline |
| Connection | Fuel line input, manifold mount |
| Housing Material | Zinc alloy |
| Housing Color | Silver/metallic |
| Fitting Type | Fuel line connector |
| Warranty | Manufacturer dependent, typically 1 year |
| Other Technical Attributes | ISO9002 certified factory production |
Package Contents
- 1 x Carburetor Assembly (Replaces 3R1-03200-1 / 3AS-03200-0)
Explosion Diagram
Installation Guide
- Ensure the engine is cool. Shut off the fuel supply and disconnect the negative battery terminal for safety.
- Carefully label and disconnect the fuel inlet hose, throttle linkage, and any choke or vacuum lines attached to the carburetor.
- Remove the nuts or bolts securing the carburetor to the intake manifold and carefully lift it off.
- Clean the manifold mounting surface thoroughly, removing all traces of the old gasket material.
- Place the new gasket onto the manifold, followed by the new carburetor. Reinstall and tighten the mounting hardware evenly.
- Reconnect the throttle linkage, fuel line, and any other hoses. Ensure all connections are secure.
- Turn the fuel supply back on and check for any leaks around the fuel line connection.
- Start the engine. You may need to adjust the idle speed screw according to your engine's service manual specifications.
Troubleshooting & FAQ
Q: How do I confirm this carburetor fits my Tohatsu or Mercury outboard?
A: Start by checking the "Compatible Engine Models" and "Part Number Cross-Reference" tables on this page. This carburetor fits a wide range of 3.5-5 HP 4-stroke models, including the Tohatsu MF/MFS/NSF series and Mercury outboards that use the 803522T part number series. Verifying your part number is the most reliable method.
Q: What are the signs my old carburetor needs replacement?
A: Common signs of a failing carburetor include difficulty starting the engine, rough or unstable idling, stalling at low speeds, poor acceleration, and black smoke from the exhaust. If cleaning your current carburetor doesn't resolve these issues, a full replacement is often the best solution.
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
4.0 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 4
STROBE: Favorite Ball, durable, decent battery life
Color: Glow in the Dark Strobe Toy, Size: Medium
*Update since Outward Hound redesign: The new version doesn't seem to light up as consistently on every bounce and seems to light up in a more seizure inducing way (I'm sorry I couldn't think of a better description). The light also seems to die much faster with the new version. The inner light and batter actually popped out its encasement in one ball after about 2 months of use, only by my Golden who doesn't chew particularly forcefully on it. I did notice right away and check regularly for damage, just putting that out there as a warning. It is still by far my dog's favorite ball.
Original: This is my Golden Retriever's absolute favorite ball! Particularly the strobe light up ball but she's happy with any Planet Dog ball to the point that she looks at me for the "good ball" to fetch with if i try to have her play with a ball from a different company.
Pros: by far my dog's favorite ball
- good bounce, and good squish factor yet durable
-larger size: safe for large dogs
-lights up to see at night
-decent battery life
-rain does not affect battery
Cons:
-battery is not replaceable/ rechargeable (though I'm not sure it's an option without seriously altering the design)
-regular glow (once battery is dead) is not great
-only lights up on a bounce and shortly after that
- If your dog bites down particularly forcefully it can displace the battery which typically kills it;
if submerged in water (my dog tends to place it in her water bowl when she takes a break while fetching), it is reduces battery life, both make me worry about safety
The ball always out lasts the lifespan of the battery for the light, I'd say we average about 1 month per ball while the light works with about 1 hour of use almost everyday. The ball does hold up to some of my dog's friends that are super chewers including one that is a Cane Corso. I don't let them sit and work at chewing it but they definitely squeeze it in their mouths with a good bit of force. My girl is happy to play with the ball even once the battery dies but I prefer to have the light so I can find the ball when needed. The glow color does glow when placed under a flashlight for a few minutes first but I find it doesn't glow as well or as long as other company's glow toys. My dog has a tendency to drown it in her water bowl to keep it nearby or rinse off any dirt and that definitely shortens the battery life but using it in the rain doesn't seem to affect the battery life
I think this being my dog's favorite has to do with the good bounce and squeeze factor this ball has. I like that it's slightly bigger than a tennis ball so I'm comfortable with large dogs playing with it. It fits in the "large" chuck it ball launcher. I actually discovered this specific ball when another dog had it and my dog kept taking it instead of her other light up ball that she had played with happily for months.
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Reviewed in the United States on September 10, 2023
★★★★★ 5
Great for my pitbull, worth the price! the warranty isn’t what it seems so check their site first.
Color: Orange Squeak Toy, Size: Medium
I’ve now purchased 3 and I don’t see myself ever stopping! My 55lb Staffie (pitbull) has absolutely obliterated every ball and toy (rope, rubber, stuffed) before this one in a matter of minutes. You take your eyes off it, and the next time you’d look back it would be in pieces. Kong Xtremes and other “indestructible” toys only lasted a week, tops. He also goes nuts for anything that squeaks, so keeping him happily entertained for a while was a challenge because the second he’d chomp down on a squeaker, it’d break. He’s now had this blue squeak ball for a MONTH and it STILL SQUEAKS!! He regularly falls asleep with it still in his mouth, or tucked under his chin. That’s how obsessed he is with this thing. I would 100% recommend this to anyone who needs a seriously durable toy for their super powerful chewer as that’s been my experience! This material is super bouncy and he can bite down (unlike some rubbers, Kong/West Paw) without puncturing it somehow. It’s perfect for fetch, and floats too. He’s never had a toy last this long, so this is a welcome break for my wallet despite being a more expensive toy. I was buying a few toys every week until we tried this one!
Cons: The first two balls didn’t squeak after a few days, so maybe they’ve improved something since then. The warranty replacement process is more tedious than others like West Paw, and only replaces them ONCE. It’s also requires more force to squeak this given the nature of the material, but since it extends the life of the squeaker I’m totally fine with it.
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Reviewed in the United States on December 13, 2018
★★★★★ 5
This ball has lasted and still have it after many months or longer. My dog loves it.
Color: Pink Squeak Toy, Size: Medium
My Belgian Malinois can really chew through inferior play toys and balls, etc., and this is one of the few that has lasted a long time, and he really likes it. Another bonus is that it gets quite slippery with his saliva and the ball will bounce a little bit unevenly, so it can either slip out of his mouth or bounce in an unexpected direction that can fool him. He has such quick reactions that is hard to get a ball past him, but with this ball, I can score extra points on him when he can't block it. Otherwise I have no chance, and he beats me every time.
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Reviewed in the United States on October 21, 2025
★★★★★ 3
Please go back to the original ball design and squeaker!!
Color: Pink Squeak Toy, Size: Medium, Color: Pink Squeak Toy, Size: Medium
Review update: I am updating my review for a few reasons. 1) The ball I ordered below was the 3rd time I purchased it. I originally bought one years ago, Pre-Covid, for my old pitty. My now Corgi, Jett loved that ball so I got a 2nd one for times when we couldn’t find the original. Well, the ball was slightly larger, the squeaker stopped working, and Jett preferred the original. 2) The newest one doesn’t squeak at all and is also slightly larger than the original. The original fell down the sewer drain that is in our backyard, and we lost the 2nd ball, so we ordered the ball again. My husband ended up having to retrieve the original from the sewer drain because Jett would pace around the sewer looking for the original. I ended up returning the 3rd ball because Jett doesn’t want anything to do with it & it doesn’t squeak. The video I provided is Jett squeaking the original that is at least 5-6 years old. I highly recommend the company go back to the original design that has not only stood the test of time and heavy use but is also the preferred size and for some reason has a much better, more reliable squeaker.
I bought 2 of these balls for my Corgi mix and another for my son’s girlfriend’s Golden Retriever. Both dogs love the ball. They love the squeak and the ball is very durable. The ball doesn’t easily squeak by hand but will when they bite down on the ball or when it bounces. Speaking of, it has a decent amount of bounce to it too. Our dog loves to jump in the air to catch it after it bounces off the ground. I highly recommend this ball for medium and large dogs.
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Reviewed in the United States on December 24, 2023
★★★★★ 5
Chuckit! Max Glow Ball Dog Toy - A Canine Delight in the Dark!
Size: Small, Pattern Name: Pack of 1
I recently introduced the Chuckit! Max Glow Ball Dog Toy to my furry friend, and it has quickly become a favorite in our playtime routine. Here's why it deserves a glowing 5-star review:
**Pros:**
**1. Day and Night Fun:**
The Max Glow feature of this ball adds an extra layer of excitement to playtime. Whether it's a sunny day or a moonlit night, my dog can enjoy fetching and playing with this ball anytime, making it a versatile and engaging toy.
**2. Long-Lasting Glow:**
The glow effect lasts surprisingly long, providing extended play sessions even after the sun sets. The consistent glow adds a thrilling element to our nighttime activities, making it a standout feature of this toy.
**3. Durable Design:**
The Chuckit! Max Glow Ball is built to last. Its durable construction can withstand the enthusiastic chewing and fetching antics of my dog, ensuring longevity and making it a reliable addition to our collection of toys.
**4. Easy to Clean:**
Cleaning this ball is a breeze. Whether it's muddy paw prints or slobber, a quick rinse under the tap is all it takes to keep the Chuckit! Max Glow Ball looking and feeling fresh for the next round of play.
**5. Compatible with Chuckit! Launchers:**
The ball is compatible with Chuckit! launchers, adding an extra layer of fun to our play sessions. The launcher allows for longer throws, providing a good workout for my dog and adding an interactive aspect to our outdoor activities.
**6. Fetching Favorite:**
My dog absolutely loves fetching this ball. The texture and size make it easy for him to carry in his mouth, and the glowing feature captures his attention and keeps him engaged during playtime.
**7. Versatile Outdoor Toy:**
Whether it's a game of fetch in the backyard, a trip to the park, or an evening stroll, the Chuckit! Max Glow Ball has become our go-to outdoor toy. Its versatility and engaging qualities make it an essential part of our canine adventures.
In conclusion, the Chuckit! Max Glow Ball Dog Toy has brought endless joy and excitement to our playtime routine. Its durable design, long-lasting glow, and compatibility with Chuckit! launchers make it a 5-star favorite in my dog's toy collection. If you're looking to add a touch of magic to your dog's play sessions, this glowing ball is a must-have. Let the nighttime playtime adventures begin! 🌙🐾🌟
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Reviewed in the United States on January 26, 2024