fits model: 250, Mariner. make: Mercury. year: 1994–2002.

( Manufacturer Part Number: 821663 ), ( Part Type: Hp Alternator )
The Mercury Mariner 1994-2002 Alternator with Part Number 821663 is a crucial component for maintaining the electrical system in your 225, 250, or 30 HP 3.0L engine Mariner. This alternator, specifically designed for Mercury Marine outboard engines, ensures reliable and efficient charging of the battery while the engine is running.
The 821663 Mercury Mariner Alternator is a 12-volt direct drive unit, delivering a steady current to power your boat's electrical accessories. It's equipped with a robust and durable regulator to maintain the battery's charge at optimal levels, preventing overcharging or undercharging.
The alternator housing is made of high-quality materials, designed to withstand the harsh marine environment. It features a durable fan for efficient cooling, preventing overheating and ensuring optimal performance even in prolonged use.
The alternator is also known for its easy installation and maintenance. It comes with mounting brackets and necessary hardware, making it a straightforward upgrade or replacement process. The diode design ensures long-lasting performance and reduces the risk of electrical backflow, protecting your engine's electrical system.
In summary, the 1994-2002 Mercury Mariner Alternator 821663 is a reliable, durable, and efficient electrical component for your outboard engine. It ensures reliable battery charging, is easy to install and maintain, and is designed to withstand the harsh marine environment.
Pros of buying a 1994-2002 Mercury Mariner alternator (part number 821663) for a 225, 250, or 300 HP 3.0L engine:1. Availability: Older parts like this one are often easier to find and purchase due to a longer production and usage period.
2. Cost-effective: Older parts are typically cheaper than their newer counterparts, which can result in significant savings.
3. Compatibility: This specific part is designed for the Mercury Mariner's 3.0L engine, ensuring a perfect fit and function.
Cons of buying a 1994-2002 Mercury Mariner alternator (part number 821663) for a 225, 250, or 300 HP 3.0L engine:1. Limited warranty: Older parts often come with fewer or no warranties compared to newer parts.
2. Quality concerns: The age of the part may have led to potential wear and tear, which could impact its performance.
3. Less advanced features: Older parts may lack the advanced features present in newer models, such as improved efficiency or durability.
Conclusion: If you're looking for a cost-effective solution for your Mercury Mariner's alternator, the 1994-2002 model with part number 821663 could be a viable option. However, it's essential to consider the potential drawbacks, such as limited warranty and quality concerns. A thorough inspection and possibly a professional evaluation of the part's condition are recommended before installation. To ensure the best performance and longevity, weigh the pros and cons carefully and consider upgrading to a newer, more advanced model if your budget allows.
Ks part: alternator may fit more model's condition: used.
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Please see included pictures. Fits various Mercury Mariner ,250, hp outboard motors.