This is a genuine manufacturer-approved part which is specially made for use with Subaru / Robin engines commonly installed on lawn and garden equipment. The purpose of this insulator is to provide a tight seal between the carburetor and the cylinder, unfortunately, over time it will wear out and it may begin to crack eventually requiring...Read more a replacement. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality insulator is made of durable plastic and is sold individually.