UnderDog Diesel 2011-2016 GM 6.6L LML Duramax Coolant Bypass Kit
UDD-LML-Coolant-Bypass-30723230
2011-2016 GM 6.6L LML Duramax Coolant Bypass Kit from UnderDog Diesel. Available configurations and required selections are shown in the product options.
Professional installation is recommended. Supporting modifications or calibration may be required for some performance applications. Confirm vehicle fitment before ordering.