Genuine OEM HydroGear Parts HydroGear Transaxle Oil Service Kit includes: 5 quarts of genuine Hydro-Gear transaxle oil, 2 genuine oil filters, 1 fitting & 1 pump Fits Hydro Gear ZT-2800 through ZT-3600 Transaxles For use in small engines, riding mower engines, tractor engines & other products that use Hydro-Gear Using original Hydrogear parts to repair your hydro pump, transaxle or hydrogear transmission will ensure that you lawnmower transaxle or equipment perform at its best performance.