Replacement belt for Several Woods Mow-n Machines Mower Decks, code 71879. This is a 5/8" X 55" Heavy Duty Kevlar cord belt. Fits: D5218T-2 Mow`n Machine D5221T Mow`n Machine D6118-2 S/N 345401 & Up Mow`n Machine D6118-3 Mow`n Machine D6118T Mow`n Machine D6118T S/N 580459 & Up Mow`n Machine D6118T-2 Mow`n Machine D6121T Mow`n Machine DM4415 S/N 345401 & Up Mow`n Machine DM6119 Mow`n Machine DM6119 S/N 345401 & Up Mow`n Machine If you are not sure if this belt will fit your mower please give us a call before you purchase it and we will confirm fitment for you. Specifications: Pitch: 5/8" Length: 55 Kevlar Cord" Made by A & I Products We stock a wide variety of replacement parts for most Agricultural Equipment please contact us if you have any questions or if you would like more information. Your satisfaction is important to me, if you have any questions, concerns or comments please let me know, I will do everything I can to answer your questions, correct your problem and help you out.!