UnderDog Diesel 2011-2016 Duramax LML Rear Engine Cover Coolant Return Plug

2011-2016 Duramax LML Rear Engine Cover Coolant Return Plug 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.