This is a heater hose, water bypass tube for 1997-2009 Chevrolet Kodiak and GMC Topkick T6500, T7500 trucks, and 2004-2009 Chevy Kodiak and GMC Topkick T8500 trucks. This is a short, u-shaped, water bypass tube for the heater hose on these trucks. This inner diameter is 15MM. Replace your old part with this brand new factory original part from GM at a fraction of the dealer price.

New. Never Installed. OEM Part. Bulk Overstock

GM Part # 15717882

Item is number 11 in the GM diagram