The original EGR cooler for certain vehicles features a fin design that is prone to clogging. Dorman's OE FIX EGR cooler modifies the OE design by using spiral tubes that are optimized to cool exhaust gas efficiently and reduce clogging. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Silverado 2500 HD: 2007, 2008, 2009, 2010] - [Chevrolet Silverado 3500 HD: 2007, 2008, 2009, 2010] - [GMC Sierra 2500 HD: 2007, 2008, 2009, 2010] - [GMC Sierra 3500 HD: 2007, 2008, 2009, 2010]