John Deere Original Equipment Compression Spring - M118688. 
Wire Diameter: 3.048 MM
Outside Diameter: 19.810 MM
Free Length: 39.880 MM
Spring Rate (LBF/in or N/mm): 36.430 N/MM 
Solid Length: 21.290 MM
Number of Coils: 7.000 UNITY
Material: A15-11
Finish: K
Fits the following John Deere Gators: 4x4, 6x4, Diesel Trail, Worksite, CS, CX, TH 6x4, TS 4x2, TX, TX 4x2, X710, X730, X734, X738, X739, X750, X754, X758, X940, X948, X949, Z535R, Z540R, Z625, Z655, Z665, Z720E, Z730M, Z735E, Z735M, Z740R. This is a genuine John Deere Part. Thanks for looking!