158.75mm K19 KT19 KTA19 KTAA19 QSK19 Diesel Engine Pistons 4309218 4913795

The shape of the piston depends mainly on the type of combustion engine. Gasoline (petrol) engine pistons tend to be lighter and shorter compared with the diesel engine pistons. Piston geometry has many subtleties, due to the complexity of its working environment, but we the main parts of a piston are:

• piston head, also called top or crown: is the upper part of the piston which comes into contact with the gas pressure withing the combustion chamber.
• ring belt: is the upper-middle part of the piston when the piston rings are loed.
• pin boss: is the lower-middle part of the piston which contains the piston pin.
• piston skirt: is the area under the ring belt.