fits model: 350.

( Brand: Mercruiser ), ( Manufacturer Part Number: F349990 ), ( Engine Hp : 260 ), ( Country/region Of Manufacture: United States )
The Mercruiser 5.7 Bluewater Inboard Thunderbolt IV Freshwater Cooling Outboard engine (F350641) is a powerful and reliable marine engine designed for freshwater applications. This engine is equipped with a 5.7L V8 powerhead, delivering an impressive thrust and torque for smooth and efficient performance on the water.
The Thunderbolt IV series is renowned for its advanced technology and innovative features, including Mercruiser's Digital Throttle and Shift (DTS) system. This system provides precise and effortless control of the engine, allowing for easy maneuvering and smooth acceleration. The engine also features a closed-loop cooling system with a freshwater heat exchanger, ensuring optimal engine temperature and longevity in freshwater environments.
The Mercruiser 5.7 Bluewater Inboard Thunderbolt IV is equipped with a 350 horsepower rating, making it an ideal choice for larger boats and high-speed applications. It is also designed with a deep V-bottom for reduced drag and improved fuel efficiency, helping to reduce operating costs and extend the range of your boat.
This engine is also packed with features that ensure ease of maintenance and long-term reliability, including a heavy-duty corrosion-resistant aluminum alloy construction, high-quality bearings and seals, and a rugged, marine-grade paint finish. The engine also features a large, easy-to-access oil filter and water pump, making routine maintenance quick and easy.
Overall, the Mercruiser 5.7 Bluewater Inboard Thunderbolt IV Freshwater Cooling Outboard engine (F350641) is a powerful, reliable, and feature-rich option for freshwater boaters looking for smooth and efficient performance. With its advanced technology, innovative features, and long-term durability, this engine is sure to provide years of enjoyment on the water. The engine is available for purchase at a price of $34,990.00.
Pros of buying a Mercruiser 5.7 Bluewater Inboard Thunderbolt IV (F350-641):1. Powerful Engine: The Mercruiser 5.7 liter V8 engine provides ample power for most freshwater applications, with a horsepower rating of 350.
2. Freshwater Cooling: The freshwater cooling system ensures that the engine runs cooler in freshwater environments, reducing the risk of overheating.
3. Inboard Design: The inboard design of the engine is more streamlined and efficient than outboard engines, reducing drag and improving fuel efficiency.
4. Thunderbolt IV Technology: The Thunderbolt IV technology features advanced fuel injection, electronic throttle control, and digital monitoring, which can improve engine performance and reduce emissions.
Cons of buying a Mercruiser 5.7 Bluewater Inboard Thunderbolt IV (F350-641):1. High Price: At a price of $35,000, the engine is not an affordable option for all boat owners.
2. Maintenance Requirements: Inboard engines require regular maintenance to ensure they run smoothly and efficiently, which can be time-consuming and costly.
3. Limited Versatility: While the engine is well-suited for freshwater applications, it may not be the best choice for saltwater environments or high-speed boating.
4. Limited Availability: The engine may not be readily available in all regions, which could make it difficult to find replacement parts or repairs if needed.
Conclusion:The Mercruiser 5.7 Bluewater Inboard Thunderbolt IV (F350-641) is a powerful and efficient engine that is well-suited for freshwater applications. Its freshwater cooling system, inboard design, and Thunderbolt IV technology make it a reliable and high-performing option for boat owners. However, its high price and maintenance requirements may make it a less attractive option for some boat owners. Ultimately, whether or not to buy this engine depends on the specific needs and budget of the boat owner.
Recommendation:If you are looking for a powerful and efficient engine for freshwater boating, the Mercruiser 5.7 Bluewater Inboard Thunderbolt IV (F350-641) is a solid choice. However, be sure to consider its high price and maintenance requirements before making a purchase. It may be worth comparing this engine with other options to ensure that it is the best fit for your specific needs and budget.
They even have the wiring harnesses. These were removed from a freshwater boat. These motors are complete drop in. These motors were last ran a year and half ago they very well.
These are complete Mercruiser 5. They have all the external components, alternators, freshwater pump, carb.
These are low hour engines. I never drained any of the oil or antifreeze so buyer could see how clean they are. 7 bluewater inboard engines in standard rotation LHS and they are the thunderbolt iv ignition series. They are very clean and don't leak oil or antifreeze.
These motors have freshwater cooling systems which means they are cooled with antifreeze. Fuel pump, etc. I have two of these engines but this sale is priced each.