Set of four (4) fuel tube o-rings that inserts into the fuel passage between the carburetor intake and air chamber or plenum of the GL1000 and GL1100. These o-rings were never sold as a separate part by Honda but are included in the OEM carburetor gasket sets for GL1000 (16010-371-004) and GL1100 (16010-463-004 ). Made from material to avoid premature hardening, they are an inexpensive fix for those unseen air leaks plaguing the GL1000 and GL1100 owners.