Fitment: 2004.5-2007 LLY LBZ Duramax
DHD's billet fitting thermostat housing to heater core line kit makes heater core plumbing a breeze. This kit includes our billet coolant supply fitting that replaces the OE steel EGR/heater core supply tube, a billet triple seal heater core quick connect fitting and all the hose and hardware required. This kit will route coolant from the front coolant bridge adjacent to the thermostat housing to the heater core.
Confirmed fitment on LLY and LBZ trucks. May fit other years.
This kit will work in conjunction with HSP's forward facing thermostat housing.
See picture below for suggested fitment:
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