DOPPG-4DCC-DZ1X-XXXX Hydro Gear part No. PG-4DCC-DZ1X-XXXX This is an original Hydro Gear Left hand pump, part number PG 4DCC DZ1X XXXX, and PG4DCCDZXXXXX. Use in small engines, riding mower engines, tractor engines and other products that use Hydro-Gear.