1100-4058 Chicago Scooter Co. Oil Drain Bolt Fits CSC go QMB139 engine Scooter The Oil Drain Bolt with the part number 1100-4058 is designed for CSC Go. scooters equipped with the QMB139 engine. This bolt serves a crucial purpose in the scooter’s maintenance, allowing you to drain the engine oil during routine oil changes. Compatibility: Fits GY6-based engines, including the 50cc QMB139 and 150cc GY6 motors. Suitable for various scooter models, such as Buddy, Black Cat, Rattler, Kymcos, Lance, Rocketta, Tank, and more. Also compatible with most Chinese 50cc, 60cc, 80cc, and 100cc QMB139 motors. Works for 150cc-232cc GY6 motors as well as Tao Motors, Taotao, Ice Bear, Wolf, and Jonway models. Fits scooters from brands like Jmstar, Roketa, Sunl, Tank, Peace, Cougar, and Gator. Specifications: Made of quality metal for durability. Lightweight design.