fits model: Mercruiser.

( Brand: Sierra ), ( Manufacturer Part Number: 18-4170 ), ( Part Type: Cylinder Piston ), ( Country/region Of Manufacture: Taiwan ), ( UPC: 030999976208 )
The Sierra 18-4170 is an impressive outboard motor engine designed for power and performance. This particular model is equipped with a Mercruiser 165hp engine, which delivers a robust and reliable power output. The engine features an inline cylinder arrangement, with four pistons, each working in harmony to propel your watercraft forward with ease.
The pistons, specifically, are of high-quality construction, with a bore size of 0.30 inches. This dimension ensures optimal combustion efficiency, resulting in improved power output and fuel efficiency. The inline configuration of the cylinders also contributes to a balanced and smooth operation, reducing vibrations and noise for a more comfortable riding experience.
The Sierra 18-4170 is not just about power, but also about reliability. Mercruiser, a renowned marine engine manufacturer, is known for its durability and longevity. The engine is built with marine-grade materials, ensuring it can withstand the harsh environments that watercraft often encounter.
The 165hp engine provides ample power for a variety of water activities, from leisurely cruising to high-speed water sports. It's also capable of towing water skiers or wakeboarders, making it a versatile choice for water enthusiasts.
In conclusion, the Sierra 18-4170 with its Mercruiser 165hp inline cylinder engine is a powerful, reliable, and efficient choice for anyone looking to upgrade their watercraft's power system. With its high-quality pistons and robust construction, it's a motor that will provide years of enjoyable use on the water.
Pros of Buying Sierra 18-4170 with Mercruiser 165hp Inline Cylinder Pistons:1. Powerful Engine: The Mercruiser 165hp engine provides ample power for a boat of this size, ensuring smooth and efficient operation.
2. Reliability: Mercruiser engines are known for their durability and reliability, which can save you money in the long run by reducing maintenance and repair costs.
3. Fuel Efficiency: The inline pistons in the engine design help improve fuel efficiency, reducing your operating costs.
4. Versatility: The Sierra 18-4170 is a versatile boat that can be used for a variety of activities, including fishing, water skiing, and cruising.
Cons of Buying Sierra 18-4170 with Mercruiser 165hp Inline Cylinder Pistons:1. Initial Cost: The upfront cost of the Sierra 18-4170 with the Mercruiser 165hp engine can be high, which may be a barrier for some buyers.
2. Maintenance: While Mercruiser engines are reliable, they still require regular maintenance to keep them running smoothly.
3. Weight: The Mercruiser 165hp engine is heavier than some alternatives, which may affect the boat's performance and fuel efficiency.
Conclusion:The Sierra 18-4170 with the Mercruiser 165hp inline cylinder piston engine is a powerful and reliable option for boat buyers looking for a versatile vessel. While the upfront cost may be high, the engine's durability and fuel efficiency can save you money in the long run. However, it's important to consider the maintenance requirements and weight of the engine when making your decision.
Recommendation:If you're in the market for a versatile and powerful boat, the Sierra 18-4170 with the Mercruiser 165hp inline cylinder piston engine is a solid option. Just be sure to factor in the maintenance requirements and weight of the engine to ensure it's the right fit for your needs and budget.
Replaces Mercruiser Mercury 734-4860. Sierra 18-4170 Piston Kit Mercruiser Mercury 165hp GM Inline 6 Cylinder 0.30 Oversize, Mercury-Mercruiser 734-4860 PISTON AND PIN ASSEMBLY .030.S. Includes: OS. Rings for Top Groove, 2nd groove, 3rd 0.30 OS.