The Heavy Duty Exhaust Gas Recirculation Valve, No. 904-5098, from Dorman Products is designed to match the fit and function of the original valve on specified vehicles: 2006-03 Cummins ISM, OE Nos. 3101917, 3102317, 3102745, 3103077, 3103361, 3103765, 3103824, 3104230, 3104875, 4921905, 4955421, 4955421RX. Made of quality materials, it is engineered for reliable performance and durability. This valve is engineered to withstand extreme heat and carbon buildup and is a reliable replacement for a failed original EGR valve.