Fits: 2020 thru 2024 Chevy Silverado/GMC Sierra 2500HD/3500HD L5P Duramax Diesel

OEM replacement fuel cooler surge tank cap. This is for the smaller coolant surge tank located under the hood of the truck that cycles coolant to the fuel cooler.

Replaces Part#'s:

• GM 13558569 
• GM 13599209