CUMMINS NT855 & N 14; FLAT FLYWHEEL WITH 10" CENTER FOR 15 1/2" CLUTCH 103 TOOTH RING GEAR WITH 6 MOUNT HOLES & 2 THREADED HOLES RING GEAR: 103 TEETH PILOT BEARING: TP836306 CROSS REFERENCE: 3609903, 3609890 CORE #: 175 CORE PRICE: $250.00