fits model: Marine. make: Mercury. year: 2012–2021.

( Manufacturer Part Number: 8M8030976 ), ( Part Type: Unit )
The Mercury Marine Unit 12 21 1.75 Lower, with the model number 8M8030976, is a high-performance outboard engine designed to deliver power and reliability on the water. This Mercury outboard engine is a 12-volt, 21-horsepower unit, featuring a 1.75-inch lower shaft.
The engine is equipped with a 4-stroke, 4-cylinder, 90-degree V-6 design, which provides excellent fuel efficiency, low emissions, and smooth operation. The 4-stroke design also ensures quiet operation, making it perfect for recreational boating or fishing trips.
The Mercury Marine Unit 12 21 1.75 Lower features a digital electronic fuel injection system, which delivers precise fuel injection for optimal engine performance. This system also helps to reduce fuel consumption and emissions, making it more environmentally friendly.
The engine is built with high-quality materials and is designed to withstand the rigors of marine use. It has a corrosion-resistant aluminum alloy cylinder head and a high-strength steel crankshaft, ensuring long-lasting durability. The engine is also equipped with a water-cooled system, which helps to maintain optimal operating temperatures and extend engine life.
The Mercury Marine Unit 12 21 1.75 Lower is easy to install and maintain. It comes with a quick-disconnect fuel system and a removable mounting bracket, making installation a breeze. The engine also includes a comprehensive maintenance schedule and easy-to-access service points, making routine maintenance simple and straightforward.
Overall, the Mercury Marine Unit 12 21 1.75 Lower is a high-quality, reliable, and powerful outboard engine that is perfect for small boats, fishing boats, and personal watercraft. Its 4-stroke design, digital electronic fuel injection, and corrosion-resistant materials make it a durable and efficient option for boaters looking for a dependable power source.
Pros of buying a Mercury Marine 8M8030976 12 21 1.75 lower unit:1. Powerful and Reliable: This Mercury Marine outboard engine is known for its power and reliability. It delivers 175 horsepower, which is sufficient for most recreational boating activities.
2. Fuel Efficient: The 8M8030976 model is designed to be fuel-efficient, which can save you money on fuel costs in the long run.
3. Durable: Mercury Marine engines are built to last. The 8M8030976 is no exception. It is made with high-quality materials and components, ensuring long-term performance.
4. Easy to Maintain: Mercury Marine engines are known for their easy maintenance. The 8M8030976 model is no different. Its design makes routine maintenance tasks simple and straightforward.
5. Wide Availability of Parts: Mercury Marine has a wide network of dealers and distributors, making it easy to find replacement parts if needed.
Cons of buying a Mercury Marine 8M8030976 12 21 1.75 lower unit:1. High Initial Cost: The Mercury Marine 8M8030976 is a high-performance engine, and as such, it comes with a high price tag.
2. Requires Regular Maintenance: While the engine is easy to maintain, it does require regular servicing to ensure optimal performance and longevity.
3. Loud Operation: Outboard engines, in general, can be quite noisy. The Mercury Marine 8M8030976 is no exception. This might be a concern if you value quiet operation.
4. Fumes: Outboard engines can produce fumes, which might be a concern if you plan to use the boat in enclosed areas or near people.
Conclusion:The Mercury Marine 8M8030976 12 21 1.75 lower unit is a powerful and reliable engine that is suitable for most recreational boating activities. Its fuel efficiency, durability, and easy maintenance make it a good investment for the long term. However, its high initial cost, noise, and fume production are drawbacks that potential buyers should consider.
Recommendation:If you value power, reliability, and long-term performance, the Mercury Marine 8M8030976 12 21 1.75 lower unit is a good choice. However, if you are budget-conscious or if noise and fumes are a concern, you might want to consider other options. It's always a good idea to test drive the engine before making a purchase to ensure it meets your specific needs and preferences.