Coolant Block-Off Plug - 2007.5 to 2010 GM 6.6L Duramax (LMM)

When installing PPE Exhaust Manifolds and Up-pipes, the factory coolant tube is no longer compatible. Intended for race trucks that no longer have the need for coolant to flow to the EGR and cabin heater.  The Coolant Block-Off Plug is installed in place of the coolant tube.