Echo Original Equipment MUFFLER ASSY - P100006321 · PB-8010H S/N: P48715001001 - P48715999999-->Exhaust S/N: P48715001001 - P48715017999 · PB-8010H S/N: P48715001001 - P48715999999-->Exhaust S/N: P48715018000 - P48715999999 · PB-8010H S/N: P52315001001 - P52315999999-->Exhaust · PB-8010T S/N: P48615001001 - P48615999999-->Exhaust S/N: P48615030000 - P48615999999 · PB-8010T S/N: P52415001001 - P52415999999-->Exhaust This is an OEM Echo part.