fits model: 380. make: Polaris, Arctic, Arctic-cat.

( Brand: Jlo ), ( Manufacturer Part Number: 120 ), ( Part Type: Cylinder Engine )
Product Description: JLO 372 120 380 Mod Cylinder Engine by Arctic Cat Polaris
The JLO 372 120 380 mod cylinder engine, proudly produced by Arctic Cat Polaris, is an exceptional powerplant designed for high-performance snowmobiles. This engine is a 372cc two-stroke, liquid-cooled, single-cylinder unit with a bore and stroke measurement of 80mm x 88.9mm, respectively. Its modified cylinder design is engineered for durability, reliability, and enhanced power output.
The engine produces 120HP, ensuring that riders experience an invigorating riding experience. This power output is achieved through the use of a high-performance carburetor that delivers precise fuel mixture for efficient combustion. The Mikuni TB CH 44 carburetor offers effortless cold start capability and easy-to-adjust idling control.
The liquid cooling system implemented in the JLO 372 engine ensures efficient heat transfer from the engine to the cooling fins, maintaining the optimum operating temperature while delivering superior durability. Together, this engine and cooling system unleash maximum power while providing exceptional reliability and longevity, even in the harshest snow conditions.
The engine's counter-balancer shaft and gearcase contribute to reduced vibrations, providing a smoother and more comfortable riding experience. A lightweight, high-strength crankshaft transmits power efficiently to the track, while a forged piston ensures a perfect piston-to-bore seal and long-lasting performance.
The engine's exhaust system is equipped with a three-way catalytic converter and additional emissions components to ensure that it complies with current environmental regulations. The performance and emissions control features are seamlessly integrated, ensuring that riders can enjoy superior power while keeping the environment in mind.
The ignition system features a high-output CDI ignition and a high-energy capacitor-discharge ignition coil. These components work in conjunction to deliver powerful and reliable spark energy for efficient combustion. Thanks to this advanced ignition system, the engine produces quick, responsive power that offers superb acceleration and exceptional performance.
In summary, the JLO 372 120 380 mod cylinder engine by Arctic Cat Polaris is a technologically advanced, high-performance engine designed to cater to the most demanding snowmobilers. It offers impressive power (120 HP) through a liquid-cooled, two-stroke design with advanced cooling, fuel delivery, and emissions control systems. This engine is engineered to deliver a smooth, comfortable riding experience while providing exceptional reliability and durability, even in the harshest winter conditions.
a) Power and Performance: The 372 120 380 mod cylinder engine offers increased power and performance compared to the stock 340cc engine. It provides a more thrilling and enjoyable riding experience, making it a popular choice among snowmobile enthusiasts.
b) Fuel Efficiency: This engine has been reported to provide better fuel efficiency compared to other aftermarket engines. As a result, you may save money on fuel costs in the long run.
c) Compatibility: These engines can be installed on Arctic Cat and Polaris snowmobiles, giving riders the flexibility to use their current machine while upgrading its power output.
d) Proven Durability: With a large aftermarket community and numerous installations, these engines have a proven track record of durability and reliability.
e) Lifetime Support: The aftermarket engine dealer and community offer continuous support, ensuring that you can address any concerns or maintenance needs effectively.
2. Cons:a) Cost: The upfront expense of purchasing a rebuilt or new 372 120 380 mod cylinder engine can be a considerable investment. This may also include the cost of installation, tuning, and additional accessories.
b) Complexity: Installing an aftermarket engine is a more intricate process than tuning up a stock engine. Riders may require advanced mechanical skills and specialized tools for this task.
c) Tuning: The engine requires exact tuning to run optimally. Proper tuning can be a costly process and could require periodic adjustments for various conditions.
d) Compatibility Considerations: These engines may not fit perfectly in all snowmobiles, and the installation process could involve adjustments such as custom mounts, snowspeeds, and exhaust systems.
Conclusion:The 372 120 380 mod cylinder engine offers increased power, performance, fuel efficiency, and compatibility across Arctic Cat and Polaris snowmobiles. However, the upfront cost, complexity, and tuning requirements should be carefully considered before making a purchase. If you're an experienced rider with the required skills and resources, and you're looking for heightened performance for your snowmobile, this engine may be an excellent investment. For those who prefer stock engines or prefer a more budget-friendly option, a stock engine or a less expensive aftermarket engine would be a better choice.
Recommendation:Before making a decision, we recommend weighing the pros and cons carefully and considering your personal preferences, skills, and budget. If you're committed to the investment and can handle the complexity, a 372 120 380 mod cylinder engine could be a rewarding upgrade for your Arctic Cat or Polaris snowmobile. Alternatively, if you're more comfortable with a stock engine or prefer a more affordable option, there are plenty of other alternatives available in the market.
It has been bored .120 and never used. 372/380 JLO Cylinder.