This is the lower radiator hose for 2003-2009 GMC Topkick and Chevrolet Kodiak C4500-C5500 trucks, with the 8.1L engine (L18). This part mounts on the lower output of the radiator to the engine. This part is no longer available from GM and is now a rare, hard to find part. Replace your old hoses 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 # 15797902 (number on the item)

Alternate GM Part # 15201654

Item is everything circled in "A" in the diagram. Includes numbers 9, 10, 11, and 12 in the diagram