The Piston Rings Set - Standard size 66mm for Yanmar 3TNV66, a premium quality piston ring set designed to provide optimum performance and durability for your engine. This set includes 1 complete piston ring set of 1 cylinder, ensuring a reliable and efficient operation of your engine. Highlights Engine Model : Yanmar 3TNV66 Brand : Riken Taiwan Country/Region of Manufacture : Taiwan Piston Bore (mm) : 66 Ring Size (mm) : 66x1.5HKx1.5x3 Manufacturer Part Number : 119209-22500 Package Include : 1 Complete Piston Ring set of 1 Cylinder