- Upgrade your RC marine engine performance with these two 36 mm cooling jackets, specifically engineered for 3660, 3674, and 3650 engine models. - Designed as efficient heatsinks, these cooling jackets ensure optimal water cooling for your RC marine engine, preventing overheating and prolonging the life of your equipment. - Made from high-quality materials, they deliver reliable heat dissipation tailored for the demands of marine environments. - Key Features: - Compatibility: Perfectly fits 3660, 3674, and 3650 engines, ensuring a snug and effective installation. - Size: Each jacket measures 36 mm, providing a compact yet powerful cooling solution. - Performance: Enhances engine efficiency by maintaining optimal operating temperatures, allowing for longer run times and improved reliability. - Practical Applications: - Ideal for competitive RC boating, where maintaining peak engine performance is crucial for winning races. - Perfect for recreational use, keeping your engine cool during extended outings on the water. - Great for hobbyists looking to upgrade or replace their existing cooling systems for enhanced durability and performance. Invest in these cooling jackets to safeguard your RC marine engine against heat-related issues and ensure a smoother, more enjoyable experience on the water.