The John Deere 54 in. Deck Drive Belt is designed to replace your John Deere riding mower drive belt. The long-lasting aramid cords provide strength for your mower's high horsepower demands. It is compatible with John Deere riding mower models D170 and LA175.. For questions about service and repair, please call the John Deere Customer Contact Center at 800-537-8233 or reference the Service & Repair document. Mower deck belt. For John Deere riding mowers. Fits models E180, D170 and LA175. 54 in. belt length. Belt length (in.): 103.7. Fits Deck Size (in.): 54 in.. Fits deck size (in.): 54