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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.

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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.

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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.

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

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

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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.

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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.

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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! :thumbup2:

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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 :thumbup2: or John as some call him.

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