178-6544: Piston Rings

Description: Cat® Piston Rings are split rings that fit into a groove on the outer diameter of the piston body between the top ring and the oil ring. Piston rings function to form a seal between the piston body and the cylinder wall that prevents the loss of combustion cylinder gases to the crank case, maintains a constant level of lubricating oil between the cylinder wall and the piston and regulates engine oil consumption by scraping oil from the cylinder wall back to the sump. Application: Consult your owner's manual or contact your local Cat Dealer for more information.