2011-2016 LML Duramax Downpipe Plugs

Off the shelf drain plug bolts just won't work in the downpipe as the ports are too shallow. We have custom length stainless plugs to plug off an open port in the downpipe if you have any unused sensors. These work in the NOx, 9th Injector, and EGT ports on the downpipe in offroad applications only.