DMAXSTORE Filter Adapter With Donaldson Filter Install
We know the fuel system on a modern common rail diesel is sophisticated but the filtration on the Duramax is lacking, so we are always looking for a for better filtration to keep your engine running at it finest, so we have put a 2 micron cat filter on the stock filter head and have had great results but the only down fall to having the cat filter is that there is no water separation built in to this filer so unless you are running a lift pump with a water separator on it it is not advised to run the cat filter. We have found an option for you that are looking for a better filter and and water separation This Donaldson fuel filter is a 3 micron fuel & water separator filter combo. It is 99% efficient at 3 microns, flows 90gph It also features a built in water drain on the bottom of the filter. The Donaldson 553203 filter has a larger particulate capacity over the cat filter, so we have taken our cat filter adapter and installed this filter and it works awesome.
Here is a quick install of the filter adapter and the required spacer for the clearance of the filer.
This is the o-ring that comes with the filter adapter that is correct for the cat filter but will have to be removed for the Donaldson filter to seal correctly.
The o-ring on the left is included with all the Donaldson filters and the o-ring the right is the removed o-ring from the Cat adapter
Install the o-ring on the adapter now your ready to start work on the tuck
Start by removing the air intake tube to gain access to the to filter head assembly
Next loosen up the 12mm bolt on that hold the filter head to the engine
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