1OE Number: The referencing OE number of this recoil pull start starter are 28400 ZE3 W02ZB, 28400 ZE3 W01, 28400 ZE3 W01ZA, 28400 ZE3 W01ZB, 28400 ZE3 W01ZP. 2Fitment: The recoil starter is a replacement for GX340 GX390 GX610 GX620, and applicable for 11 Hp, 13 Hp, 18 Hp, 20 Hp Engines. 3High Performance: Direct replacement for the old or damaged pull starter, offers better performance for your engine with low operating noise, stable performance. 4Premium Material: The recoil starter is made of high strength Abs and metal material, which is wear resistant, break proof, durable and stable. 5Easy to Install: Stringently manufactured to meet the original standard, good replacement for the old or broken one, improving the time efficiency. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin