It is known that the factory coolant plate is prone to leaks. The OEM Plate uses a metal gasket that can corrode over time, causing leaks. The UnderDog Diesel Coolant Block-Off Plate for the GM 6.6L Duramax is the fix for this issue!
Machined Billet Aluminum with an integrated O-Ring Seal, you can be sure to permanently eliminate those leaks from causing you issues down the road.
Features:
Integrated O-Ring Seal
Black Anodized Finish
Billet Aluminum
Included Grade 10.9 Hardware
Note: You will lose about 4 Gallons of Coolant during installation. Downpipe needs moved out of the way to access the plate.
