This is the heater hose inlet and outlet hose for 2007-2009 GMC Topkick and Chevrolet Kodiak trucks with the 7.8L diesel engine. This is two, blue, silicone hoses for the heater core inlet and outlet. Replace your old, leaking, or burst hoses with this brand new factory original part from General Motors at fraction of the dealer price.

New. Never Installed. OEM part. Bulk Overstock

GM Part # 25794899 (number on the item)

Item is number 9 in the GM diagram