... the following engines as well: 1. 4520200 C: and also, for agricultural engines, we ... piston , 3 Cast Iron piston , 4 Cooling channel piston , 5 One piece casting piston , 6 Compages piston ... Alfin ,Double Alfin , No Alfin , Graphite , Oil cooling channel , Sn(tin) plated , Steel Piece , Top Oxidization ... , 3 Cast Iron piston , 4 Cooling channel piston , 5 One piece casting piston , 6 Compages piston ...