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

OEM GM replacement surge(a.k.a radiator) tank cap. This is for the Larger Coolant Surge Tank located under the hood of the truck. Faulty caps and aftermarket replacements can cause many different issues in the cooling system. 

Replaces Part#:

• GM 13545896
• GM 13502353