Mahle 54585 Left Driver SIDE GRADE C DURAMAX HEAD GASKET 2001-2016

Mahle 54582 Right 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.