John Deere Original Equipment Extension Spring - M84711

John Deere Original Equipment Extension Spring - M84711 Extension Spring - SPRING, IDLER Specification - End Type: 03/03 Wire Diameter: 0.162IN Outside Diameter: 1.250IN Free Length: 6.228IN Spring Rate (LBF/in or N/mm): 34.946LBF/IN Initial Tension (LBF or N): 31.001LBF Number of Coils: 22.000UNITY Material: A15-2 Finish: K Note: D Fits the following Lawn and Garden Tractor Models: 116 and 116H Lawn Tractors (with 38-Inch & 46-Inch Mower Deck). 180 Lawn Tractor (with 38-Inch, 46-Inch or 48-Inch Mower Deck). 185 Lawn Tractor (with 38-Inch or 46-Inch Mower Deck). 240, 245, 260, 265, 285 & 320 Lawn and Garden Tractors. SRX75 and SRX95 Riding Mowers. This is a OEM John Deere part. Thanks for looking!