fits make: Yamaha. year: 2025.

( Manufacturer Part Number: 64D-45300-21-8D ), ( Part Type: Unit ), ( Engine Type: Outboard ), ( Stroke: 2-stroke ), ( Engine Hp : 150, 175, 200 ), ( Lower Unit Assembly: 64d-45300-22-8d ), ( Country/region Of Manufacture: Japan )
The Yamaha 64D-45300-21-8D Lower Unit is a high-performance component designed for outboard motors with power outputs ranging from 150 to 200 horsepower. This lower unit is specifically engineered for Yamaha's 2.6L 6-cylinder engines equipped with the OX66 HPDI carburetor.
The 64D-45300-21-8D Lower Unit is known for its robust construction and superior durability, featuring a high-strength aluminum alloy gearcase that provides excellent resistance to corrosion and wear. The unit is equipped with a reverse clutch mechanism that ensures smooth and reliable reverse operation, even under heavy loads.
The lower unit features a 1.87:1 gear ratio, which provides excellent acceleration and top-end speed, making it an ideal choice for high-speed applications. The unit is also equipped with a marine-grade sealed lubrication system, which ensures that the internal components are always properly lubricated, even in the harshest marine environments.
The 64D-45300-21-8D Lower Unit is also equipped with a high-capacity water pump that ensures proper cooling of the engine, even in hot weather conditions. The unit is designed to be easy to install and maintain, with a simple bolt-on design and easy-to-reach service points.
In summary, the Yamaha 64D-45300-21-8D Lower Unit is a high-performance component designed for outboard motors with power outputs ranging from 150 to 200 horsepower. Its robust construction, superior durability, and reliable reverse clutch mechanism make it an ideal choice for high-speed applications, while its sealed lubrication system and high-capacity water pump ensure proper cooling and easy maintenance.
Pros of buying Yamaha 64D-45300-21-8D lower unit:1. Powerful: This lower unit is designed for outboard engines with a power range of 150 to 200 HP, making it ideal for high-performance boats and water sports.
2. Reliable: Yamaha is known for its durable and reliable products, and this lower unit is no exception. It features a corrosion-resistant aluminum alloy construction and high-quality components.
3. Efficient: The 2.6-liter displacement and High Output 66 HPDI carburetor provide excellent fuel efficiency, reducing operating costs.
4. Versatile: The Yamaha 64D-45300-21-8D lower unit is compatible with a wide range of outboard engines, making it a versatile option for boat owners.
Cons of buying Yamaha 64D-45300-21-8D lower unit:1. Price: This lower unit is one of the more expensive options on the market, which may be a deterrent for some buyers.
2. Limited customization: While the lower unit is highly versatile, it may not offer as much customization as some other options.
3. Maintenance requirements: Like any mechanical component, the Yamaha 64D-45300-21-8D lower unit requires regular maintenance to ensure optimal performance and longevity.
Conclusion:The Yamaha 64D-45300-21-8D lower unit is a high-performance and reliable option for boat owners with outboard engines in the 150 to 200 HP range. Its fuel efficiency and versatility make it an attractive choice, but its higher price point may be a deterrent for some buyers. If you can afford the investment and are willing to maintain the lower unit properly, it is an excellent choice for high-performance boating and water sports.
Recommendation:If you are looking for a powerful and reliable lower unit for your outboard engine, the Yamaha 64D-45300-21-8D is a great option to consider. Its fuel efficiency and versatility make it an excellent choice for boat owners who want to get the most out of their investment. However, be sure to factor in the higher price point and maintenance requirements when making your decision.
This unit was pulled from a running motor that lost compression in cylinder. The gear lube has been inspected and is free of any water intrusion or metal flakes. This unit has been tested and shifted nice smooth in forward neutral reverse. Overall a very nice lower unit that works great.