GM 12678318 Duramax L5P Engine Oil Cooler Assembly 2017-2019

This is a genuine GM OEM Duramax Diesel L5P Engine Oil Cooler Assembly.

The Duramax engine oil cooler is not normally a component that goes bad, however, it should be replaced after any catastrophic engine failure or during any performance engine builds.

The factory oil cooler has a stack plate design which makes cleaning any debris out nearly impossible. This is the reason we always recommend replacing the oil cooler. A defective engine oil cooler is also a major source for coolant/oil cross contamination. Check your coolant degas bottle for a layer of oil. If any appears, it is often defective oil cooler.

Fitment:

2017-2019 Vin "Y" L5P Duramax 2500/3500 Silverado/Sierra

Note: Gaskets Not Included