509-6461: 170mm Gage Diameter Piston Ring

Description: Cat top piston rings are split rings that fit into a groove on the OD of the piston body above the intermediate 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. Attributes: • Material: Steel • Surface hardened • Coated • Gage Diameter: 170 mm (6.69 in) • Height: 3.87 mm (0.152 in) • Emissions control Application: Consult your owner's manual or contact your local Cat Dealer for more information.