Compatibility: The RS5500 Carburetor is specifically designed to replace models 0G8442G110, 0066740, G0066720, and G0066740, a perfect fit for your 389cc Generator without any modifications needed. Complete Air Filter Kit: Included with the carburetor is a comprehensive air filter kit that enhances engine performance by providing clean air, which is essential for optimal combustion and longevity of the generator.