Echo Original Equipment CARBURETOR WTA-35 - A021004331 · PB-580H S/N: P44514001001 - P44514999999--Carburetor · PB-580H S/N: P44713001001 - P44713999999--Carburetor · PB-580H S/N: P48013001001 - P48013999999--Carburetor · PB-580H S/N: P48314001001 - P48314999999--Carburetor · PB-580T S/N: P44614001001 - P44614999999--Carburetor · PB-580T S/N: P44813001001 - P44813999999--Carburetor · PB-580T S/N: P48113001001 - P48113999999--Carburetor · PB-580T S/N: P48414001001 - P48414999999--Carburetor · PB-580T S/N: P55515001001 - P55515999999--Carburetor This is an OEM Echo part.