Merchant Automotive 2006-2010 Chev/GMC Lower Radiator Pipe O-Ring – 10406
Replacement O ring seal fits in lower hose at connection to radiator. A leak at this spot is commonly just the seal and does not require replacement of the entire hose assembly. GM used 2 different size o-rings, kit comes with both to insure you have the one you need.
Lower hose retainer clip also available – Part Number 25806515