MERCURY 1643-9539A1 Freshwater Lower Unit 40HP

( Manufacturer Part Number: 1643-9539A1 ), ( Part Type: Unit ), ( Warranty: 90 Day ), ( Engine Hp : 40 ), ( Country/region Of Manufacture: United States )

Review MERCURY Freshwater 40hp Cyl Lower Unit Assembly fits TRACKER

Mercury 1643-9539A1 Tracker Freshwater 40HP Lower Unit

The Mercury 1643-9539A1 Tracker Freshwater 40HP Lower Unit is a high-performance, reliable, and efficient marine propulsion solution designed for freshwater environments. This lower unit is engineered to deliver exceptional power and torque, ensuring swift and smooth maneuverability on your watercraft.

Crafted by Mercury Marine, a globally recognized leader in marine propulsion systems, this lower unit boasts a robust design for enhanced durability and longevity. It is specifically tailored for use in freshwater, featuring corrosion-resistant materials to protect against the degrading effects of saltwater.

The 40HP rating provides ample power for a wide range of recreational and commercial watercraft, including fishing boats, pontoons, and deck boats. The lower unit is designed to work seamlessly with Mercury 40HP outboard engines, offering optimal performance and compatibility.

The Mercury 1643-9539A1 Tracker Lower Unit features a precision-engineered gear case for optimal propeller placement and improved thrust, ensuring swift acceleration and efficient cruising speeds. The unit is equipped with a heavy-duty, heat-treated gear system for improved strength and durability, reducing the risk of gear wear and failure.

This lower unit also incorporates Mercury's proprietary Power Steering technology, offering effortless steering and control. The system reduces steering effort by up to 70%, making it ideal for extended periods of use or for those who prefer a more comfortable boating experience.

The Mercury 1643-9539A1 Tracker Freshwater 40HP Lower Unit is backed by Mercury's industry-leading warranty, providing peace of mind and confidence in your investment. With its exceptional performance, durability, and ease of use, this lower unit is the ideal choice for those seeking a reliable and efficient propulsion solution for their freshwater watercraft.

1. **Reliable Brand:** Mercury is a well-known and respected brand in the marine industry, known for their durability and performance.

2. **40hp Power:** This lower unit provides a powerful 40 horsepower, which is suitable for a variety of water activities like fishing, water sports, and cruising.

3. **Freshwater Use:** This unit is designed for freshwater use, which eliminates the concern of saltwater corrosion.

4. **Tracker Compatibility:** This lower unit is specifically designed for Tracker boats, ensuring a seamless fit and optimal performance.

5. **Easy Maintenance:** Mercury lower units are known for their ease of maintenance, which can help save on repair costs in the long run.

1. **Price:** As with any high-quality product, the price may be higher than some other options on the market.

2. **Suitable Only for Freshwater:** If you plan to use the boat in saltwater, this lower unit may not be the best choice due to its freshwater design.

3. **Specific to Tracker Boats:** While this is an advantage for Tracker boat owners, it may limit its versatility for those with other boat brands.

The Mercury 1643-9539A1 Tracker Freshwater 40hp Lower Unit is a high-quality, reliable option for those who own Tracker boats and use their boats in freshwater. Its powerful performance, ease of maintenance, and compatibility with Tracker boats are significant advantages. However, the higher price and lack of versatility may be a concern for some buyers.

If you own a Tracker boat and use it in freshwater, the Mercury 1643-9539A1 Tracker Freshwater 40hp Lower Unit is a solid choice. If you're looking for a lower unit that is suitable for saltwater or other boat brands, you may want to consider other options on the market. It's always a good idea to compare features, prices, and reviews to find the best fit for your specific needs.

Details:

Ready for water. Shifted great, pumps water good oil. Off a 95 Tracker 40hp fresh water outboard.

part #: 16439539a1 prices

• $60.00-$337.50

specifications ouboaen:

• for models: Tracker
• for makes: Mercury
• mpn: 1643-9539a1
• part type: Unit
• warranty: 90 Day
• engine hp : 40
• country/region of manufacture: United States

payments ouboaen:

• other
• credit card: Mastercard
• wallet: Paypal

general ouboaen:

• condition: Used
• Boat Parts > Outboard Engines Components > Complete Outboard Lower Units

returns ouboaen:

• policy: No Returns

seller ouboaen:

• rating: 100.0%
• # reviews: 45
• city: Eau Claire, Wisconsin

offer ouboaen:

• best offers: True
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: June 8, 2025
• quantity: 1

shipping ouboaen:

• carrier: USPS
• cost: $0.00
• class: Standard
• type: Calculated
• transit: 4-10 Days
• service: USPS Ground Advantage

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