【OEM REPLACEMENT & EASY INSTALLATION】The 603907 pump drive belt with 1/2″ x 50.75″ dimensions. Direct replacement for Hustler OEM 603907, 607400, 607400-A; Stens 265-699. Compatible with Hustler Raptor, Raptor SD (52", 54", 60"), Raptor SDX, Raptor Limited, and Raptor Flip-Up series zero-turn riding mowers. Installation is straightforward, so you can complete it in minutes 【MULTI-PLY KEVLAR CONSTRUCTION】The 607400 Hustler drive belt features a Kevlar cord that builds in resilience. Its short Kevlar strands within the rubber retain long-term structural integrity, suited for all mowing tasks 【ALL-SEASON DRIVING】Crafted from specialized neoprene, the lawn mower belt retains suppleness in every season. Its reverse-clad seams design curtails skidding for continuous drive, extending the intervals between belt replacements 【WIDE COMPATIBILITY & SELECTION】Belt sizing is essential—that’s why we match our belts to OEM specifications. Cross-reference your model with the compatibility equipment information list on this page. Any questions? Our team is here for you 【BUILT FOR LONG-TERM RELIABILITY】ROTIX mower belts are engineered for diverse outdoor settings and accommodate the constant starts and stops. The Kevlar cord, neoprene rubber, and multi-ply structure work together to enable reliable drive power in all mowing scenarios