fits model: Mercruiser. make: Mercury. year: 2020–2024.

( Manufacturer Part Number: 43-55765 ), ( Part Type: Drive Gear )
The Mercruiser Upper Stern Drive Gear, model number 20-24 1.65 43-55765, is a crucial component for any 1970-1982 Mercruiser outboard engine. This gear is specifically designed for the stern drive system, which is responsible for transmitting power from the engine to the propeller.
The gear is made of high-quality materials, ensuring durability and reliability even under heavy use. It features a 1.65 ratio, which is ideal for a wide range of boating conditions and speeds. The gear is precision-machined to ensure a smooth and efficient operation, reducing wear and tear on other components of the drive system.
The gear measures 20-24 inches in diameter, making it suitable for a variety of Mercruiser outboard engines. The 43-55765 is the part number for this specific gear, making it easy to identify and order replacements as needed.
Installing the Mercruiser Upper Stern Drive Gear is straightforward, but it's recommended to follow the manufacturer's instructions to ensure proper installation and to avoid any potential damage to the drive system. Regular maintenance and timely replacements of worn-out components, such as this gear, can help extend the lifespan of your boat's engine and improve its overall performance.
In summary, the Mercruiser Upper Stern Drive Gear 20-24 1.65 43-55765 is a vital component for your 1970-1982 Mercruiser outboard engine. Its precision construction, high-quality materials, and suitable size make it an excellent choice for reliable and efficient operation of your boat's drive system.
Pros of buying a 1970-1982 Mercruiser Upper Stern Drive Gear (Model 20-24, 1.65, 43-55765 Mercury):1. Reliability: Mercruiser is a well-known and respected brand in the marine industry, known for producing reliable and durable products.
2. Availability of Parts: As a popular and long-lasting model, there are likely to be a wide range of replacement parts available for this gear, making repairs and maintenance easier.
3. Value for Money: Older models like this one may be more affordable than newer models, making them a good option for budget-conscious buyers.
4. Classic Appeal: Some people may appreciate the classic look and feel of older marine engines and gearboxes, and this Mercruiser gear may appeal to those with a fondness for vintage marine technology.
Cons of buying a 1970-1982 Mercruiser Upper Stern Drive Gear (Model 20-24, 1.65, 43-55765 Mercury):1. Potential for Mechanical Issues: Older gearboxes may have more wear and tear, which can lead to mechanical issues. It's important to thoroughly inspect the gearbox before purchasing to ensure that it's in good working order.
2. Limited Technology: Older gearboxes may not have the same level of technology as newer models, which could impact performance and fuel efficiency.
3. Limited Warranty: Older models may not be covered by the same warranty as newer models, which could leave buyers with more financial responsibility in the event of a breakdown.
Ending Conclusion:Overall, a 1970-1982 Mercruiser Upper Stern Drive Gear (Model 20-24, 1.65, 43-55765 Mercury) can be a good option for budget-conscious buyers who appreciate vintage marine technology and are willing to take on the potential for mechanical issues. However, it's important to thoroughly inspect the gearbox before purchasing and consider the trade-offs between reliability, performance, and cost. Ultimately, the decision to buy this gearbox should be based on the individual's specific needs and preferences.
Recommendation:If you are considering purchasing a 1970-1982 Mercruiser Upper Stern Drive Gear (Model 20-24, 1.65, 43-55765 Mercury), I would recommend conducting a thorough inspection of the gearbox before making a purchase. Look for signs of wear and tear, such as leaks, corrosion, or damaged seals. Also consider getting a professional inspection if you are not familiar with marine engines and gearboxes. Additionally, research the availability and cost of replacement parts to ensure that maintenance and repairs will not be overly expensive. Overall, if you are willing to invest the time and resources to ensure that the gearbox is in good working order, it can be a reliable and cost-effective option for powering your boat.