Hydro pump drive belt replaces Hustler/Excel OEM# 781443 and 781443X. 62-1/4" length x 1/2" width REL(raw edge laminate) Aramid Cord construction for superior strength and longevity. Rotary# 10844; Sunbelt# B158370, B1781443; Stens# 265-856. Fits most Z & Super Z Models. Refer to your owner's manual to match by belt OEM part #.