16221-ZW6-000 Carburetor Gasket - Overview. The 16221-ZW6-000 Carburetor Gasket is a vital component in Honda marine engine systems. It serves as a high-quality seal within the carburetor assembly, ensuring an airtight and fuel-tight connection between carburetor components. By maintaining the proper seal, this gasket supports optimal air and fuel mixture delivery, which is crucial for reliable engine operation and efficiency. Manufactured to match factory specifications precisely, it ensures se