The 12900522950 Piston Ring Set is a genuine Yanmar OEM component designed for optimal engine performance and longevity. This ring set is compatible with various Case IH, John Deere, and New Holland compact tractor models utilizing Yanmar 3TNV88, 4TNV88, and 4TNV88C engines. It ensures proper piston sealing, critical for maintaining compression and reducing oil consumption. Key specifications include an 88 mm bore, 0.12 kg weight, 95 mm length, 95 mm width, and 51 mm height.