Compression Seat Spring Replacement: M154605 Each package contains 4 Compression Seat Springs for replacement and spare. High quality material is not easy to deform, more durable compared to rubber ones Seat Compression Spring fits the following models: 3203 , 4105 , 1023E , 3032E , 3038E , X300 , X300R , X304 , X305R , X310 , X320 , X324 , X330 , X340 , X350 , X350R , X354 Seat Compression Spring for JohnDee-re Lawn Mowers/Tractor: X360 , X370 , X380 , X384 , X390 , X394 , X500 , X520 , X530 , X534 , X540 , X570 , X580 Seat Compression Spring for JohnDee-re Lawn Mowers/Tractor: 4044M , 4049M , 4052M , 4066M Compression Seat Spring M154605 for JohnDeere Lawn Mowers/Tractor, Seat Suspension Spring Fits 4052M X310 X320 X300 X300R X304 X305R X500 X580