New Bush Hog 50080907 Fuel Tank Assembly HDE-4 Series ZT. ZERO TURN MOWER FUEL TANK ASSEMBLY HDE-3, MODELS HDE2049KT3, HDE2249FS3, HDE2255FS3, HDE2261FS3, HDE2555KP3, HDE2561KP3. HDE-4 SERIES MODELS HDE2049KT4, HDE2249FS4, HDE2255FS4, HDE2261FS4, HDE2555KP4, HDE2561KP4.