1、Piston ring set is suitable for all 406CC 186F and 186FE made in China, and 418CC 186FA and 186FAE diesel engines 2、The ring ports of the three piston rings cannot be on the same direction (it is better to stagger 120 in order), and the ring ports of the piston ring need to stagger the piston pin holes 3、Durable, come with anti-corrosion, high temperature resistance 4、Piston parts of air‑cooled diesel generator, also can be used for mini‑tiller 5、Good‑quality alloy material, with high hardness, good heat resistance and corrosion resistance Item Type: Piston Ring Combination Material: Alloy Purpose: Air-cooled diesel generator piston accessories Suitable Models: 406CC 186F and 186FE, and 418CC 186FA and 186FAE only have engines Piston Inner Diameter: Approx. 86mm / 3.4inThickness: Approx. 2mm / 0.1in 4mm / 0.2in 2mm / 0.1in 3 x Piston Ring Combination 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-dadangjia