This is the radiator overflow tank hose for 2007-2009 Chevrolet Kodiak and GMC Topkick T6500, T7500, and T8500 trucks. This hose is for the overflow tank on the cooling system on these trucks. This hose is a blue colored part. 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 # 25888387 (number on the item)

Item is number 2 in the GM diagram.