MAHLE Cylinder Head Gasket 17-23 GM 6.6L Duramax L5P Select Thickness:0.51"- 1.30MM The mild steel backing plate

The mild steel backing plate is zinc-dipped to inhibit corrosion

blowing away your stock parts is what this system is really about

7L Cummins but want to keep a factory look

the secondary leafs are engaged

at an affordable price

MAHLE Cylinder Head Gasket 17-23 GM 6.6L Duramax L5P Select Thickness:0.51"- 1.30MM The mild steel backing plateThe MAHLE Cylinder Head Gasket for 2017 2023 GM 6. 6L Duramax L5P delivers OE form, fit, and function in a durable multi layer steel (MLS) design. Whether you're replacing the left or right side, these gaskets ensure a reliable seal under high combustion pressures, perfect for stock or mildly upgraded setups. Trusted MAHLE quality built for long term performance. Sold Individually.