Your choice (price is each) of a New John Deere by Tuff torq K914C transaxle for X728 & X748 above serial number 40,000 (may also fit X738 & X758) or a new UV20-DA transaxle for John Deere TX Gator with serial number under 50,000 but it may work in the higher serial number machines as well and may fit TX Turf gators also. The Deere part number for the gator transaxle is AM135309 and the part number for the garden tractor hydrostatic transmission is MIA11936 or MIA10851. Price is plus tax. No trades. Shipping available. $1,400