EvoHT2 for 20-23 GM Duramax - Now with ECM and TCM Tuning! MERCH 6L LML - Mahle Aftermarket's

6L LML - Mahle Aftermarket's Mahle Cylinder Head Set contains every other gasket and sealing product that will you need to complete your head gasket repair in one package

OEM Replacement Part

\The drop steps feature a louvered design that makes it easy to secure your footing in any condition

Torque/ +17 HP gains

Add on 1050470-SB pulley kit required for 2011 single/dual alternator and 2012-2016 dual alternator

EvoHT2 for 20-23 GM Duramax - Now with ECM and TCM Tuning! MERCH 6L LML - Mahle Aftermarket's**Device can unlock and tune only one vehicle. Once the ECM TCM is unlocked and flashed, the flash can be returned to factory settings, but the Unlock process can not be reversed. If VIN lock and ECM Unlock has been completed, device is non returnable