Features & Benefits
- Number of Blades: 6
- Height: 20mm(25/32)
- External Impeller Overall Diameter: 44mm(1 47/64)
- Internal Shaft Insert Diameter: 17mm(43/64)
- Net Weight: 11g
- Plastic Hub
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Item #:
4837826
Boat Engine Water Pump Impeller 345-65021-0 3R0-65021-0 for Tohatsu 25-40HP | 345650210 345650210M 3R0650210 18-8923 for Outboard Motor 25HP 30HP
Item #:
4837826
XCD 52
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What Stands Out
Compatibility
Designed to fit various Tohatsu and Mercury Mariner outboard motors, ensuring seamless installation and operation across multiple models, solving user concerns about finding the right replacement parts.
Durable Materials
Manufactured from high-quality materials, this impeller offers superior strength and longevity, reducing the need for frequent replacements and enhancing the overall performance of your boat engine.
Enhanced Performance
Designed to improve water flow and cooling efficiency, this impeller directly contributes to better engine performance and reliability, addressing overheating issues that can compromise motor functionality.
Product Details
| Engine Type | 2-stroke,4-stroke |
| Operation Mode | Manual |
| Mounting Type | Transom Mount |
| Fuel Type | Gasoline |
| Maximum Horsepower | 40 hp |
| Color | Black |
| Material Type | Plastic |
| Brand Name | SouthMarine |
| Recommended Uses For Product | For Mariners |
| Manufacturer | SouthMarine |
| UPC | 711301855007 |
| Model Number | 345-65021 |
| Manufacturer Part Number | 01-345-65021-0 |
| Brand | SouthMarine |
| Material | Plastic |
| Item Weight | 0.5 lbs (230 grams) |
Who Should Buy?
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Tohatsu Owners
Ideal for Tohatsu outboard engine owners needing an efficient water pump impeller for reliable cooling performance.
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Fishing Enthusiasts
Great for avid fishermen who rely on their boat engines and need dependable, high-quality impeller replacements.
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Maintenance Enthusiasts
Perfect for DIY boat maintenance hobbyists looking for an easy replacement part to ensure optimal engine operation.
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Other Engine Brands
Not suitable for non-Tohatsu or non-Mercury outboard engines, which may require different specifications.
Product Description
Boat Engine Water Pump Impeller 345-65021-0 3R0-65021-0 for Tohatsu 25-40HP | 345650210 345650210M 3R0650210 18-8923 for Outboard Motor 25HP 30HP 35HP/SouthMarine 47-16154-1 47-161541 for Mercury Mariner
About This Item
Upgrade your boat's water pump with the Boat Engine Water Pump Impeller. This high-quality impeller is designed for Tohatsu and Mercury Mariner outboard motors, specifically the 25HP, 30HP, 35HP, and 40HP models. It is compatible with part numbers 345-65021-0, 345-65021-0M, 18-8923, 47-16154-1, and 47-161541. Featuring 6 blades, this impeller ensures efficient water circulation and cooling for your boat's engine.
It has a height of 20mm and an external impeller overall diameter of 44mm, providing optimal performance. The internal shaft insert diameter measures 17mm, ensuring a secure fit. Made from durable materials, this impeller is built to withstand the harsh conditions of boating. It is lightweight with a net weight of 11g, minimizing any additional strain on your engine.
The plastic hub adds extra stability and durability to the impeller. Installing the Boat Engine Water Pump Impeller is a breeze. Simply follow the included installation guide for step-by-step instructions. Regular maintenance and replacement of your boat's water pump impeller is essential for optimal performance and longevity.
With this impeller, you can trust that your boat's engine will be protected and perform at its best. Don't wait until your water pump fails. Upgrade it with the Boat Engine Water Pump Impeller and experience improved efficiency and performance on the water. Order yours today and enjoy a hassle-free boating experience.
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the purpose of the Boat Engine Water Pump Impeller for Tohatsu engines?
Answer: The Boat Engine Water Pump Impeller is crucial for circulating water through your Tohatsu outboard engine, helping to maintain optimal temperature and prevent overheating. By creating suction, the impeller draws water into the cooling system from the surrounding environment, ensuring efficient engine performance. If an impeller fails or becomes worn, it can lead to engine damage due to overheating. Regular maintenance, including checking and replacing the impeller, is essential for the longevity of your engine. -
Question:
How do I know if I need to replace my water pump impeller?
Answer: Signs of a failing water pump impeller include poor water flow from the engine, overheating, or unusual noises while the engine is running. If you notice your engine temperature gauge rising or if water is not discharging properly from the cooling outlet, it may indicate that the impeller isn't functioning effectively. Regular inspection and replacement every couple of seasons can prevent serious engine issues and ensure reliable performance during your outings on the water. -
Question:
Are these impellers compatible with multiple Tohatsu engine models?
Answer: Yes, this particular Boat Engine Water Pump Impeller (model numbers 345-65021-0, 345650210, 3R0-65021-0, and more) is designed to be compatible with Tohatsu engines ranging from 25HP to 40HP. This versatility allows boat owners with different Tohatsu models to utilize the same impeller, simplifying maintenance. Always cross-check your engine's specifications against the compatibility list to ensure proper fitment and optimal performance. -
Question:
What materials is the Boat Engine Water Pump Impeller made from?
Answer: This Boat Engine Water Pump Impeller is typically made from high-quality rubber compounds or thermoplastics, providing durability and resistance to wear from prolonged exposure to water. The design ensures that it can withstand high temperatures and varying pressure levels within the engine, maintaining efficiency in water flow. The choice of materials not only prolongs the lifespan of the impeller but also keeps your engine operating smoothly, without risking damage to its components. -
Question:
Is it difficult to install the water pump impeller myself?
Answer: While installation may vary in difficulty, many boat owners find replacing the water pump impeller within their capabilities. It generally involves removing the lower unit of the outboard motor, taking out the old impeller, and installing the new one in the correct orientation. Many resources such as online tutorials exist to guide you through the process step-by-step. However, if you’re unsure or uncomfortable with DIY tasks, consulting a marine technician can ensure the job is done correctly. -
Question:
How often should I replace the water pump impeller for my Tohatsu engine?
Answer: It's recommended to replace the water pump impeller every 1-3 years, depending on the frequency of use and operating conditions. Factors such as saltwater exposure, high operating temperatures, and prolonged periods of inactivity may necessitate more frequent replacements. Keeping an eye on the signs of wear can help you stay proactive, ensuring your Tohatsu engine remains in peak condition for all your boating adventures. -
Question:
Can I use the Boat Engine Water Pump Impeller in saltwater conditions?
Answer: Yes, this impeller is designed for use in both freshwater and saltwater conditions. However, when using your Tohatsu engine in saltwater, it's crucial to perform regular maintenance checks, as salt buildup can affect engine components, including the impeller. Flushing the engine with fresh water after each outing in saltwater can help mitigate corrosion and prolong the life of your impeller, ensuring hassle-free operation. -
Question:
Where can I buy the Boat Engine Water Pump Impeller for Tohatsu in Grenada?
Answer: You can conveniently purchase the Boat Engine Water Pump Impeller for Tohatsu engines at Ubuy in Grenada. Ubuy offers a wide range of marine products, ensuring that you find the right impeller model for your needs. By shopping at Ubuy, you gain access to a simple and straightforward online shopping experience, complete with detailed product information and recommendations tailored to your specific engine requirements. -
Question:
What are the key specifications I should check before purchasing an impeller?
Answer: Before purchasing a water pump impeller, check key specifications such as model numbers (like 345-65021-0 and 3R0-65021-0), compatibility with your Tohatsu engine's horsepower, and physical dimensions to ensure a proper fit. Additionally, consider the material quality and whether it meets or exceeds OEM standards for reliability. These specifications will help you select an impeller that optimizes the performance of your boat engine while minimizing the risk of issues related to mismatched components. -
Question:
What type of maintenance should I perform on my engine's water pump system?
Answer: Regular maintenance of your engine's water pump system involves inspecting the impeller, checking for any debris or blockages in the water intake, and ensuring that hoses and fittings are secure and free from leaks. Periodically flushing the system with clean water, especially after saltwater use, is also important. Staying proactive with these maintenance tasks helps ensure that your Tohatsu engine runs efficiently and prolongs the life of crucial components, including the water pump impeller.
SouthMarine Propellers 345-65021 Editorial Review
The Boat Motor Water Pump Impeller 345-65021-0 is a compatible replacement for various outboard engines, including Tohatsu and Mercury Mariner. It features a plastic hub and has six blades. The impeller has a height of 20mm (25/32") and an external diameter of 44mm (1 47/64"). The internal shaft insert diameter is 17mm (43/64"). Based on customer reviews, the impeller is said to be a good fit and works well as intended. Some reviewers have mentioned that the impeller is made of rigid plastic instead of metal. However, there are no significant complaints regarding its performance or durability. Overall, the Boat Motor Water Pump Impeller 345-65021-0 seems to be a reliable replacement part for the mentioned outboard engines, providing an affordable solution for water pump issues.
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Pros
- Compatible with various outboard engines, including Tohatsu and Mercury Mariner
- Good fit and works well
Cons
- The impeller has a plastic hub instead of metal Note: The information provided in the FAQ section confirms the compatibility of the impeller with different engine models. However, some questions and answers are not related to the impeller itself, but rather ask about compatibility with specific engines.
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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
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