Home>> RE509517 - Mechanical Belt Tensioner Mechanical Belt Tensioner - Fits John Deere® - RE509517 Sugg. Retail Price: $72.95/EA Out of Stock Quantity: EA Product Details # RE509517 New (Aftermarket Part) Mechanical Belt Tensioner Belt Tensioner Weight: 4.20 lbs Replaces Tractor Part #: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Where Used FITS JOHN DEERE® CT315, CT322, CT332, 313, 315, 317, 318D, 319D, 320, 320D, 323D, 325, 326D, 328, 328D, 329D, 332, 332D, 333D, 244J, 304J, 324J, 325, 4120, 4320, 4520, 4720 Specifications Instructions Any use of OEM part numbers is for reference only. Need help finding a tractor part? Give us a call at 1-800-462-7335.