This factory replacement Timing Belt is used on 1991-2008 E-Z-GO 4-Cycle Engines, including vehicles with 1992-current 295cc and 350cc Fuji-Robin Engines. The timing belt controls the timing of the engine valves. Used on 1991-2008 E-Z-GO Gas TXT, Marathon, Medalist, 804, 875, XI300/500, Workhorse 1200, 4/6-Passenger Shuttle, ST Express, and Refresher models, and on all 1992-current Fuji 4-Cycle Engines (295cc and 350cc).