The O-ring K 87183 is a precision elastomer sealing component designed for part K 87166, providing essential leak protection and pressure stability in the auxiliary systems of the ZV40/48 engine. Its circular cross-section allows uniform sealing contact, ensuring reliable performance even under high vibration, temperature variations, and continuous operating loads. Made from materials resistant to fuel, oil, and hydraulic fluids, the K 87183 O-ring prevents unwanted leakage and protects sensitive components from contamination or pressure loss. As a small yet critical element, it enhances overall system integrity and contributes significantly to the engine’s long-term reliability and efficiency.