2017 - 2025 6.6L Duramax L5P

The 6.6L Duramax L5P engine advances the GM Duramax legacy for powerful, quiet, and durable diesels by offering more of those attributes with greater efficiency compared to the previous 2023 and older L5P engines.

The latest L5P is even more capable with an impressive power rating of 470 horsepower and 975 lb.-ft. of torque. For confident towing power from the start, ninety percent of peak torque is produced from 1,550 RPM thru 2,850 RPM.