Protect your investment with our precision-engineered 3d printed rear engine plug, exclusively designed for KA100 and X30 engine engines. This essential product keeps dirt, dust, and water from entering your engine when your egshast manafold is off and engine is not in use. This is perfect for sending engines off for a rebuld Engineered for racers by racers, Enhance the longevity of your engine components and maintain peak performance even during downtime.