13" HEAVY DUTY WITH CUMMINS DIESEL & 5 SPEED TRANSMISSION 2001-2004 & EARLY 2005 WITH NV5600 CAST IRON TRANSMISSION & SOLID FLYWHEEL; DIAPHRAGM PPA STAMPED STEEL W/NARROW CAST SIZE: 13" LEVERS: DIAPHRAGM CORE #: 000 CORE PRICE: $0.00