The New Holland 84156016 is a genuine OEM stop ring designed for securing hydraulic hose union fittings in a wide range of New Holland T-series agricultural tractors. This essential component ensures proper connection and prevents disengagement, maintaining the integrity of the hydraulic system. Manufactured to New Holland's stringent quality standards, it provides reliable performance and precise fitment for models including T7, T8, T9, T6, T5, T4, and T3 series tractors.