2006-2023 Silverado Sierra Express GM Duramax Diesel Fuel Gas Cap GT326 / 23288715

The GM/ACDelco fuel cap seals your vehicle's fuel tank filler, and is the high quality replacement ideal for many vehicles on the road today. This replacement fuel cap is manufactured to meet your expectations for fit, form, and function

ACDelco Part Number: GT326
GM Part Number: 23288715 or 20857912

Fitment: 2006-2023 Chevy/GMC 6.6L Duramax Diesel Engines