This is the intercooler piping coupler for 2003-2007 Chevrolet Kodiak and GMC Topkick C6500, C7500, C8500, 2006-2007 C4500, 2004-2007 T6500, T7500, and T8500 trucks. This is for those trucks equipped with a turbocharged engine. This coupler is for use ONLY on the cold side of the piping. This is to be used AFTER the intercooler. This is a brand new coupler. This is a black, reinforced, rubber coupler manufactured by Thermopol for GM. This is 105mm long and has a 3" interior diameter.

GM Part # 15069231

Item is number 2 in the GM diagram.