John Deere Original Equipment Spring - M151783 Traction L Spring Specifications: End Type 03/03, Wire Diameter 0.112IN, Outside Diameter 1.150IN, Free Length 14.685IN, Spring Rate (LBF/in or N/mm) 4.739 LBF/IN, Initial Tension (LBF or N) 5.530 LBF, Number of Coils 43.000UNITY, Material A15-7, Finish K. Fits the following John Deere models: X300, X300R, X304, X305R, X310, X320, X324, X330, X340, X350, X350R, X354, X360, X370, X380, X384, X390, X394, X584. This is an O.E.M. John Deere part. Thanks for looking!.