38mm Cylinder Piston Kit compatible with models 37, 370, 38, 380, 381, 8370T, 8371T, 8731S, DS3500T, DS3800S, DS3800T, Stark 37IC, 38, and 3800.This kit includes a cylinder and piston designed for replacement in small engine applications.The components are engineered for precise fitment and performance.Suitable for use in requiring a 38mm bore size.