6 0 Cummins 6.7 Flywheel $80 USD Quality used flywheel and ring gear for a Cummins ISB 6.7, backed by our standard warranty. OEM # 5521188, 3968672 Please Note: The part sent may not exactly match the one pictured.... Quantity2ConditionUsedStock Number44F-3968672-STK MLS Number11704849CategoryFlywheels Last Updated11/18/2025 LocationBig Lake, MN, US Sold ByQuality Bus and Truck Parts (844) 580-___ SHOWNUMBERCall Seller Email Seller Save More Info