fits make: Mercury. year: 1989–2025.

( Manufacturer Part Number: 1665-8669A ), ( Part Type: Hp Unit Shaft ), ( Country/region Of Manufacture: United States )
The Mercury 1665-8669A 1989 Outboard 25 HP XD Lower Unit Gearcase Shaft 15 is a high-quality marine propulsion component designed for durability and performance. This lower unit gearcase shaft is part of the XD series, which is renowned for its exceptional power handling capabilities and reliability.
Manufactured in 1989, this lower unit gearcase shaft is specifically designed to fit the Mercury 25 HP outboard engine. The shaft is made from robust materials, ensuring it can withstand the rigors of marine use, including exposure to saltwater, UV rays, and extreme temperatures.
The shaft measures 15 inches in length, providing a suitable fit for a wide range of boat types and configurations. It is precision-engineered to ensure smooth, efficient operation of the propeller, enhancing the overall performance of your boat.
The Mercury 1665-8669A 1989 Outboard 25 HP XD Lower Unit Gearcase Shaft 15 is designed with a focus on longevity. It features a durable, corrosion-resistant coating that helps protect the shaft from the elements, extending its lifespan and reducing the need for frequent replacements.
This lower unit gearcase shaft is a great choice for boat owners who value performance, reliability, and durability. Whether you're cruising, fishing, or water skiing, this shaft will help ensure your outboard engine operates at its best, making every outing on the water more enjoyable.
In conclusion, the Mercury 1665-8669A 1989 Outboard 25 HP XD Lower Unit Gearcase Shaft 15 is a top-quality marine propulsion component that offers excellent performance, durability, and value for money. Whether you're replacing a worn-out part or upgrading your boat, this shaft is an excellent choice.
**Pros of buying a Mercury 1665-8669A Outboard Lower Unit:**1. **Brand Reputation**: Mercury Marine is a well-established brand in the marine industry, known for producing high-quality, reliable, and durable outboard engines.
2. **Power**: This specific model is a 25 HP XD, providing a good balance of power for various water activities such as fishing, water sports, and cruising.
3. **Lower Unit Design**: The lower unit design is known for its durability and efficiency. It may offer smooth and quiet operation, which can enhance your boating experience.
**Cons of buying a Mercury 1665-8669A Outboard Lower Unit:**1. **Age**: The outboard you're considering was produced in 1989, which means it's relatively old. Older models may require more maintenance and parts might be harder to find.
2. **Technology**: Compared to newer models, the 1989 Mercury 1665-8669A may not have the latest technological features that can improve performance, fuel efficiency, and ease of use.
3. **Cost**: Older models can be more expensive to repair due to the need for specific parts. Additionally, the cost of shipping and transportation might be higher due to its size and weight.
**Ending Conclusion:**While the Mercury 1665-8669A 1989 outboard lower unit offers the brand's reputation for quality and power, its age and potential need for more maintenance should be carefully considered. If you prefer a more modern outboard with the latest technology and potentially lower maintenance costs, you might want to explore newer models.
However, if you're looking for a reliable and powerful outboard with a lower cost and don't mind the age, the Mercury 1665-8669A could be a suitable choice. It's essential to thoroughly inspect the unit, ensure it's in good working condition, and research its maintenance history before making a decision.
**Recommendation:**If you're set on this specific model, I recommend purchasing it from a reputable dealer who can offer a warranty, service support, and guidance on its maintenance. If you're open to other options, I suggest researching newer models that may offer more advanced technology and potentially lower long-term costs.
All of the work was done and motor locked up after 3rd trip out 15 short shaft.