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ljcooljc posted a topic in Centurion Boat Maintenance, Performance, Troubleshootinghello new to the forum so forgive me in advance i have a 2002 centurion hurricane with the 350 Mag MPI Tow Sports s/n OM310293. yesterday on the water the serpentine belt slipped off, i was able to salvage part of the belt to get back to the dock thank goodness. at first i thought the idler pulley must have a bad bearing, so went home to order parts and this is where the trouble started. when i look up parts for the serpentine belt and a replacement pulley i get conflicting part numbers. (807757T idler pulley 3" diameter) or (864625T idler pulley 4.25") same with the serpentine belt i get (8638765 serpentine belt 87.5") and (807755 serpentine belt 88") what puzzles me is the sizes... is it universal because of the idler pulley bracket has an adjustment? i called a local shop and when they look it up same thing... please help id like to get back out on the water :))))