Thermostat Housing to Heater Core Coolant Adapter for 2005-2007 6.6l Duramax

Thermostat Housing to Heater Core Coolant Adapter

• Design allows for clocking of hose barb outlet
• Plug included if heater core is being removed
• 3/8" NPT can easily be adapted to an AN fitting

Includes:

• Billet Aluminum Coolant Port Adapter
• Hose Barb 90° Adapter 
• Plug
• O-ring
• Flange Bolt

Fits: 2005-2007 6.6l Duramax LLY or LBZ engines.