Echo Original Equipment SOCKET - C509000100 · DPPT-2600H S/N: E60800001001 - E60800999999-->Main Pipe - Upper · PPT-2620 S/N: U43415001001 - U43415999999-->Main Pipe - Upper S/N U43415034728 - U43415999999 · PPT-2620H S/N: U43515001001 - U43515999999-->Main Pipe - Upper S/N U43515009984 - U43515999999 · PPT-266 S/N: E06426001001 - E06426999999-->Main Pipe - Upper S/N E06426007650 - E06426999999 This is an OEM Echo part.