The McCormick 3015177X1 is an authentic OEM piston ring, featuring a 95mm diameter. This essential engine component is designed for specific McCormick CX and MC series agricultural tractors, including models like CX100, CX105, CX110, MC100, MC105, and MC115. It plays a crucial role in maintaining optimal cylinder compression and controlling oil consumption, ensuring efficient engine performance and longevity. Manufactured to original equipment specifications, this piston ring guarantees a precise fit and reliable operation.