The McCormick 6517936M1 is a genuine OEM spring designed for use in a wide range of McCormick and Massey Ferguson tractors. This essential component ensures proper function and durability in agricultural machinery, maintaining optimal performance and reliability. It is crucial for specific applications across numerous models, including the McCormick MC series and a broad spectrum of Massey Ferguson tractors. Refer to your machine's parts catalog for specific application details to ensure correct fitment.