Description: Genuine GM 15 P.S.I. Radiator Cap, part number 10409635. This GM OEM 15 P.S.I. radiator cap is a factory cover that protects and finishes the area it mounts to, with OE-correct shape and attachment. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 10409635 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: All models. 6.2l, diesel. All models. 6.5l diesel. 1st Design. Single Thermostat. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature