2004-2009 GMC Topkick and Chevrolet Kodiak straight heater radiator hose with 2 Clamps. This is the heater core inlet heater hose. This item is for 2004-2009 medium duty trucks, including Topkick and Kodiak C4500 and C5500. 

GM Part # 15088703 (number on the item)

Discontinued by GM.

New. Never Installed. OEM Part

Item is number 10 in the GM diagram