MERCURY 1643-6458 Lower Elpt Unit Gear Shaft Rod Drive 70HP

( Manufacturer Part Number: 1643-6458 ), ( Type: Bevel Gears Housing )

Review MERCURY 70hp Elpt Lower Unit Gear Case Shaft Rod Drive fits 1982

The Mercury 1643-6458 is a 1982 model, 70 horsepower, Electronic Precision Trolling Lower Unit with a rod drive. This lower unit is a vital component of your outboard motor system, designed to provide smooth and efficient power transmission from the engine to the propeller.

This Mercury lower unit features a robust, corrosion-resistant, and durable cast aluminum housing that protects the internal components from the harsh marine environment. The unit is specifically designed for use with Mercury 70 horsepower outboard engines and is delivered pre-matched for optimum performance and ease of installation.

The 1643-6458 comes equipped with Mercury's Electronic Precision Trolling (EPT) technology, which allows for fine-tuned control of the propeller's revolutions per minute (RPM). This feature is particularly useful for anglers and fishermen who require precise trolling speed for optimal fish attraction and hook-setting.

Additionally, the Mercury 1643-6458 lower unit boasts a heavy-duty, one-piece gearcase which ensures maximum durability and excellent efficient power transfer between the engine and the propeller. The unit also includes a sensitive trolling valve, allowing for quick and easy adjustments to trolling RPMs.

The rod drive on this lower unit is designed for use with Mercury's Te Edge Propellers and features an internal drip-proof design that prevents water intrusion, ensuring long-lasting performance even in wet conditions. The strong, corrosion-resistant rod material is shielded from direct exposure to water and UV rays, ensuring continued strength and durability.

This Mercury 1643-6458 70hp Electronic Precision Trolling Lower Unit is backed by Mercury's industry-leading warranty and reliable customer support, ensuring peace of mind and confidence in your investment. Whether you're an experienced angler or just starting out, this lower unit is an essential piece of equipment for maximizing the performance of your Mercury outboard motor system.

Mercury 1643-6458 1982 70hp Outboard Lower Unit: Overview and Pros & Cons

The Mercury 1643-6458 1982 70hp outboard lower unit is a part of the Mercury Mariner outboard engine series, which was known for its reliable performance in both freshwater and saltwater applications. This lower unit comes with a gear ratio of 1.64:1, making it suitable for a wide range of applications, including general boating, water sports, and fishing.

1. Robust Design: Mercury lower units were renowned for their durability and reliability. This lower unit's brass gearcase and bronze propeller shaft make it particularly robust against the effects of seawater corrosion and harsh operate conditions.

2. Superior Performance: The 1.64:1 gear ratio allows for better low-end torque and improved acceleration. This can be beneficial when maneuvering in tight spaces or launching a boat.

3. Easy Maintenance: The lower unit's design allows for easy access to maintenance points, such as the oil filter, oil drain, impeller, and gearcaseLinie. This ease of access makes regular maintenance a less time-consuming task.

4. Wide Compatibility: The Mercury 1643-6458 has been used in various applications, so it's likely that used parts and technical support are readily available.

1. Older Design: Due to its age, replacement parts for this lower unit might be hard to find or expensive. Additionally, the technology in the lower unit may not be up-to-date with more recent designs.

2. Limited Features: This lower unit doesn't come with the latest features such as digital controls, advanced gear systems, or integrated computer diagnostics; these features were not commonly available when this lower unit was first produced.

3. Limited Flexibility: The 1.64:1 gear ratio and fixed propeller pitch may limit its use in certain applications, like high-speed water sports or heavy-duty commercial uses, where a different gear ratio might be preferred.

4. Potential Rust: Older, used lower units may have accumulated rust, especially if they've spent a considerable amount of time in saltwater environments. It is essential to thoroughly inspect the unit before making a purchase to ensure no major rust damage is present.

The Mercury 1643-6458 1982 70hp outboard lower unit offers robust performance, superior durability, and ease of maintenance, but its age and limited features could be potential drawbacks. If you're looking for a reliable and affordable option for a recreational boat, this lower unit might be an excellent choice. However, if you require more advanced features, or plan on using the boat for heavy-duty commercial applications, you may want to consider a more modern lower unit.

If you're in the market for a Mercury lower unit and are looking for a reliable, budget-friendly option, the Mercury 1643-6458 1982 70hp outboard lower unit could be an excellent choice. However, consider inspecting the unit thoroughly before making a purchase, especially if the boat will be used frequently in saltwater. If you need advanced features, better performance, or consistent availability of replacement parts, it may be worth considering a newer lower unit model.

part # 16436458 prices

• $74.99-$275.00

specifications utvshift:

• for makes: Mercury
• for years: 1982
• manufacturer part number: 1643-6458
• type: Bevel Gears Housing

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• time: 30 Days

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general utvshift:

• ATV, Side-by-Side UTV Parts Accessories > Transmission Drivetrain > Other Transmission Drivetrain Parts
• condition: Used

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• options: Ship-to-home
• quantity: 1
• started: February 7, 2025
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• availability: In Stock