View 1 Photo View 0 Videos Cummins ISX Flywheel $90 USD NEW FLYWHEEL RING GEAR FOR ISX CUMMINS FLYWHEEL. REPLACES 3680913 3680348 3680921 21" RING WITH 113 TOOTH COUNT., Serial#: NA, Clutch Type: 2 Plate Pull, Size: 15, Casting#: 3680913 ConditionNewPart Number3680913 3680348 3680921 WA902-10-4134Stock Number3680913 MLS Number14139692CategoryFlywheels Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info