The Bostech replacement EGR Coolers do not come with any documentation for DOT inspection. They do work in conjunction with the entire factory emission system and do not alter the functions of the EGR in any way. I would check with the testing facility to see if they require any specific certification.
The Bostech EGR Cooler Upgrade EGR783 replaces Cummins OE Part#: 2881783NX & 4956008NX. Please call Cummins with your VIN# to verify your OEM to match this EGR replacement. The EGR783 is normally in stock, but we ask that you call to verify availability before you place your order.