The John Deere LG391673 Piston and Ring Set is an essential OEM component designed for a wide range of John Deere lawn and garden equipment. This genuine piston and ring assembly ensures proper engine compression and reliable operation. Measuring 88.9 mm in length and width, with a height of 76.2 mm and weighing approximately 0.091 kg, it is built to precise specifications for a perfect fit and long-lasting durability. It is compatible with numerous John Deere models including the D, E, L, LA, S, X, and Z series, covering various HP engines.