fits make: Mercury.

( Manufacturer Part Number: 1643-9539A3 ), ( Engine Hp : 50-60 ), ( Stroke: 2-stroke ), ( Country/region Of Manufacture: United States )
The Mercury 1643-9539A3 Gearcase is a high-performance component designed for outboard motors with a power output of 50 to 60 horsepower. This gearcase is engineered to deliver optimal propulsion and maneuverability, enabling you to navigate through various water conditions with ease.
The Mercury 1643-9539A3 Gearcase features a robust and durable construction, with a corrosion-resistant aluminum alloy material that ensures longevity and resistance to saltwater and freshwater environments. The gearcase is equipped with a high-capacity, oil-filled gear system that delivers smooth and reliable power transmission, reducing wear and tear on the motor and extending its lifespan.
This Mercury gearcase is also equipped with a multi-position steering system, which allows you to adjust the steering angle for optimal boat handling and improved maneuverability in tight spaces. The gearcase is compatible with a wide range of Mercury outboard motor models, making it a versatile choice for boat owners.
The Mercury 1643-9539A3 Gearcase is designed with a focus on ease of installation and maintenance. It features a modular design, allowing you to easily disassemble and reassemble the gearcase for routine maintenance or repairs. The gearcase also includes a built-in oil fill port, making oil changes quick and hassle-free.
In summary, the Mercury 1643-9539A3 Gearcase is a high-performance and durable component that delivers smooth power transmission, optimal propulsion, and easy maneuverability for outboard motors with a power output of 50 to 60 horsepower. Its robust construction, multi-position steering system, and ease of installation and maintenance make it an excellent choice for boat owners looking for reliable and efficient performance.
Pros of buying a 1643-9539A3 Mercury 50-60 gearcase:1. Reliability: Mercury is a well-known brand with a reputation for producing high-quality marine products, and the 1643-9539A3 gearcase is no exception.
2. Durability: The gearcase is made of heavy-duty materials, such as aluminum and brass, which can withstand the harsh marine environment.
3. Performance: The gearcase is designed to deliver smooth and efficient power transfer to the outdrive, resulting in better acceleration and top speed.
4. Versatility: The 1643-9539A3 gearcase is compatible with a wide range of Mercury outboards, making it a versatile choice for boat owners.
Cons of buying a 1643-9539A3 Mercury 50-60 gearcase:1. Cost: The gearcase is not cheap, and the price can be a significant deterrent for some boat owners.
2. Availability: The gearcase may be harder to find in some areas, making it more difficult to source and install.
3. Maintenance: Like any mechanical component, the gearcase requires regular maintenance to ensure it continues to perform at its best.
Conclusion:If you're looking for a high-quality, reliable, and durable gearcase for your Mercury outboard, the 1643-9539A3 gearcase is a great option. However, the cost and availability may be a concern for some boat owners. If you're willing to invest in a top-of-the-line gearcase, the 1643-9539A3 is a highly recommended choice.
Recommendation:If you're in the market for a new gearcase, it's always a good idea to do your research and compare different options. Consider the features, price, and compatibility with your outboard before making a decision. The 1643-9539A3 Mercury 50-60 gearcase is a great option, but it may not be the best fit for everyone. Ultimately, the best gearcase for you depends on your specific needs and budget.
75, dealer cost 1687. Fits 3 cylinder Mercury and mariner hp outboards serial numbers ob to OD original list price brand new in the box gear case.