John Deere Original Equipment Extension Spring - GX25978.
End Type: 03/03
Wire Diameter: 3.500 MM
Outside Diameter: 32.000 MM
Free Length: 209.000 MM
Spring Rate (LBF/in or N/mm): 1.900 N/MM
Initial Tension (LBF or N): 65.000 N
Number of Coils: 35.000 UNITY
Material: A15-7
Fits the following John Deere models: Z335E, Z335M, Z345M, Z345R.
This is an OEM John Deere part. Thanks for looking!