Mahle 54585 Left Driver Side Grade C Duramax Head Gasket for 2001-2016 6.6L Duramax

Mahle Victor Reinz 54585 Left Side Grade C Head Gasket 01-16 Duramax Diesel

These Mahle head-gaskets are the OEM head-gasket that GM uses under their GM & AC-Delco line. These head-gaskets are the Grade C 1.05MM thickness.

Check with your engine builder to verify head-gasket thickness requirements.