CUMMINS NT855 & N14; FLAT FLYWHEEL WITH 8 9/16" 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: 129594 CORE #: 175 CORE PRICE: $250.00