Moeller Marine 033421-10 Mercury Male Barb Connector 3/8" Moeller Marine Mercury male barb connector is constructed of durable Die Cast and attaches to the fuel hose on the fuel tank side. For use with Mercury Outboard engines. Connects to tank; Attaches to fuel hose on the fuel tank side; Male 3/8" Barb; Die Cast - Bayonette Style; For use on Mercury; Connects to Moeller part # moe-33419-10 & moe-33420; OEM certified;