Do not overlook the engine oil cooler on your Duramax during engine service. These oil coolers are notorious for catching and storing both oil and coolant contaminates. DHD always recommends installing a new oil cooler during engine rebuilding or during internal component replacements.
For 20 years replacing the oil cooler meant replace the entire $400 assembly with a GM service part. Now, you can install a fresh core in your original housing for a fraction of the cost!
Features:
Gaskets Included:
Note: The seals in this kit are designed to reseal oil cooler case halves that utilize an o-ring. Some early LB7 and LLY trucks have an OE cooler that requires a flat single layer steel gasket. That gasket has been discontinued.
The green sealing band is found on replacement GM coolers 2001+ as well as 2012+ trucks. If you have a original equipment cooler on your early 2001-2010 trucks it might not required to green band seal.
Fitment:
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