TOYOTA Diesel Parts 4S Piston Rings 13011-74110

What is a piston ring?   A piston ring is a component of an internal combustion engine that sits in a groove on the outer diameter of the piston. Its main function is to create a seal between the piston and the cylinder wall, preventing the leakage of gases and oil into the combustion chamber and ensuring optimal engine performance.   Piston rings are usually made of cast iron or steel and are designed to withstand high temperatures, pressures, and mechanical loads. They are typically split into two or three segments to allow for easy installation and expansion. The segments are carefully engineered to fit precisely into the piston groove, providing a tight seal.   The main role of the piston ring is to seal the combustion chamber so that the gases produced during combustion do not escape into the crankcase. It also prevents oil from entering the combustion chamber and helps to control the lubrication of the cylinder walls. By maintaining this seal, the piston rings…