This is an authentic OEM replacement part sourced directly from the manufacturer. O-rings help seal the carburetor and stop it from leaking air or fuel. O-rings are used in a variety of lawn and garden tools that have small engines, such as snow blowers, lawn mowers, and tillers. After time o-rings get brittle and pieces may break off and get into your fuel system and cause damage to your carburetor. The most common time for replacement is when you are replacing your carburetor or doing other repairs.
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Manufacturer Part Number: 630740