JDParts is your online connection to your dealer's parts counter. Notice: Every attempt is made to ensure the data listed is accurate. You pay a premium price for a premium product. THE MAJORITY OF THE PARTS ARE INTERCHANGEABLE (PISTONS, PISTON RINGS, FUEL PUMPS, IGNITION COILS, HEADS, GASKETS, VALVES, ETC. The John Deere GX335 garden tractor was manufactured in Horicon, Wisconsin, USA from 2002 to 2005. John deere 335 replacement engine The first two letters indicate which factory the engine was produced in: TO (Dubuque, IA) CD (Sarran, France) PE (Torreon, Mexico) The next four digits are for the engine model, followed by a letter for the emission code.