This genuine DEUTZ-FAHR 1139943 O-RING is an original equipment manufacturer (OEM) part designed to provide a reliable and durable seal in a wide range of DEUTZ-FAHR agricultural and construction machinery. Manufactured to precise specifications, it ensures optimal performance and longevity. Key dimensions include an inner diameter of 12.3 mm, an outer diameter of 18.3 mm, and a thickness of 3 mm, making it suitable for critical sealing applications in engines, hydraulic systems, and other components.