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.
Features:

• Coolant Block-Off Plug
• Replaces factory coolant tube
• Made from Aluminum
• Sold Individually

Applications:

• 2001-2010 GM 6.6L Duramax LMM (119000100)