Order Yours Today to get your equipment back in top shape. JOHN DEERE 37 37A Tractor Mounted SnowThrower Replacement Drive Chain These rugged drive chains include one master connecting link. Our Premium roller chains are made rugged to ANSI Standards with hardened solid steel rollers and pins. Shot peened side plates for stress relief, improved fatigue resistance and longer service life. Bulk Packaged - No retail packaging. Original fit with master joiner link included. Roller Chain Dimensions: #40 Chain to fit 37 with SN 010001-110000 Chain Pitch: 0.500" Roller Diameter: 0.312" Roller Width: 0.312" Pin Diameter: 0.156" Plate Thickness: 0.060" Overall Width: 0.650" Tensile strength: 3800 Pounds Link Count: 80 Length: 40" #40 Chain to fit 37A with SN 110001-115000 SN 127001-550000 Chain Pitch: 0.500" Roller Diameter: 0.312" Roller Width: 0.312" Pin Diameter: 0.156" Plate Thickness: 0.060" Overall Width: 0.650" Tensile strength: 3800 Pounds Link Count: 82 Length: 41" #50 Chain to fit 37A with SN 115001-127000 Chain Pitch: 0.625" Roller Diameter: 0.400" Roller Width: 0.375" Pin Diameter: 0.200" Plate Thickness: 0.080" Overall Width: 0.820" Tensile strength: 6500 Pounds Link Count: 66 Length: 41.25" If your chain is making a popping / clicking noise or sounds like it is binding when it runs, not running as quiet as it once did , the chain is worn/stretched beyond it's service limit and ready to fail. Order replacements now to have on hand for the inevitable. Please measure and verify the actual # of links or the overall length of your drive chain before ordering. If the chain you need is longer or shorter, contact us, we will make one especially for you.