I finally got around to installing the coolant filter I bought at the end of last year. I tried to install it when I did my coolant flush in December, but I couldn’t find a plumbing/mounting option I was happy with, so the filter went back on the shelf.

I finally figured out where to mount it last month when I was installing my Home Depot CAI, the bracket fits perfectly on the bumper bracket behind the fog light, and there is plenty of room for hoses to run.

I had heard in passing that the block offered lower coolant pressure than the head, and that there was a coolant port behind the oil filter. Last week when I was getting my cam installed I confirmed this with Pat at Big Twin Diesel, and he said he had used the ports I was talking about in BB twin setups, and it would indeed flow.

So I had a mounting/plumbing plan that would work, so I waited until I did my oil change today and tackled the install. The first thing I did was drain the coolant. Once that was done I installed the fittings in the block/head.

I used the ½ NPT plug between 5 & 6 in the head, this is where the most pressure and heat exists. I am using 3/8” hose, so the fitting is a ½” MPT x 3/8” barb.

The fitting in the block is the return, it’s a 18 x1.5 o-ring metric fitting. I then put a 3/8” x 3/8 MPT barb into the o-ring fitting.

I then mounted the filter to the truck, and figured out how to run the hoses. Once that was figured out I removed the filter head and got the fittings tight.

Once that was done I got all the hoses routed. I zip tied and put anti-chaff on where appropriate.

This is all you can see when the wheel well liner is installed.

The filter itself is essentially level with the bottom of the bumper, and well above the valance piece.

I have found that the filter gets to about 100-110* (based on feel, and length of time I can hold it), before the thermostat opens, and about 140* after.

This filter should help increase water pump life, and overall cooling system efficiency. I am also expecting it to decrease the pressure in the head by 5 & 6 as well as decrease my coolant temp by a couple degrees when towing.

I decided to do a little plumbing work last night. I moved the return to the heater core return. I don't think I was getting the full flow I could have with it plumbed the way I did. I originally hadn't wanted to run it thru the heater core return becuase the area is small and the fittings are large.. But it was actually quite easy and looks fine.

I used about 8" of 5/8" heater hose, a 1/2" NPT "T", 2 1/2"NPTx 5/8 Barb, and 1 1/2" NPT x 3/8 barb. All in all the swap took about an hour, including the coolant drain/fill.

Hey AH64ID I know this is a old thread but I was wondering where you got that bracket for your coolant filter at? Are you still running the same setup? Thanks for any help! NEVERMIND: I found it Dieselmanor!

Mine is a Fleetguard part, let me know if you want the number.

Been looking into doing this. Can you drop the Fleetguard # please ?

This is where I found the head and bracket http://www.dieselmanor.com/fleetguard/257715S.asp Is this where you got it? Its funny I cant find it on their website only when I google it it comes up

That's it. I got it from my local Cummins shop.

That's actually a lot more affordable than I was thinking..

That's actually a lot more affordable than I was thinking..

I agree dieselsite has one for 129 its a nice unit but I know you can piece one together for cheaper of course thanks to our filter guru AH64ID or John as some call him.

I have been contemplating doing this to my 01, I assume my block would have the same ports.  I did it to my 1993 F-250 with the 7.3 IDI. I used wix filter head 24019 though.