installed CAT 2 micron filter today
https://www.rpidiesel.com/products/1...conversion-kit
i think for 11-16 you just plug up the return line fitting .
Appreciate all that info you posted but I'm sticking with the 4 micron factory filter because I'll still have my DFCM primary pump because once the Air Dog is installed, it'll feed the DFCM with a 2 micron filter. But I'll run the 10 micron filter on the Air Dog in the winter.
At least you posted it up for the forum.
this is how I installed it.
I used the S&S net bond and made a foam collar and stuck the filter in the own housing. Hoses lined right up.
didn’t use the L mount.
ALSO, my hose piping off problem could also be because I have the return hose in wrong…it should point down. I’m going to move it when the barb fittings come in.
this is the CAT 2 micron filter element. I’m told that this will fit the S&S and the S&S 4 micron Baldwin and six will fit on the CAT manifold. S&S does not recommend using a 2 micron. They said Ford designed for 5 micron for a reason and S&S thinks the 4 micron is e Pugh of an improvement. I told them I was not going to use the 2 micron during the winter.
https://ssdiesel.com/
They made the first DPK kit on market. And they make the 2nd gen version with the Parker Racor SNAPP filter setup. I just did a big order from dieselfiltersonline.com AND FORGOT TO ORDER A FREAKING 10 MICRON AIRDOG FUEL FILTER!!!! Oh well.
The engine compartment factory filter for the HPFP is rated at 4 microns from I've seen. If I'm wrong, I'll get corrected...

What's on the end of the 1/4 inch return hose? Where does it go to?
Last edited by Overkill2; Jul 4, 2021 at 01:30 PM. Reason: Add to post
goals are
s&S kit = reduce the cost of engine bay fuel filters, eliminate the small fitting breakage problem, improve the stock 5 micron filter to 4 microns, provide a manifold for extra NPT accesory ports.
CAT kit = reduce the cost of engine bay fuel filters, eliminate the small fitting breakage problem, improve the stock 5 micron filter to 2 microns, provide a manifold for extra NPT accesory ports.
if I were to do all over again, I would go with the S&S kit...and...if you wanted to run 2 microns during warm months, get a CAT filter eliment. but be advised S&S does not recommend using 2 micron filters.
also noted my barb fittings only has three barbs on it and the barbs are not one way barbs.
I have a 5 barb fitting arriving webs a d maybe I will be able to get two clamps on it.
I also orders some 1/4 soft injector clamps which I think will not bite into the hose.
more to come.
Ford Trucks for Ford Truck Enthusiasts
I have one way teeth fittings with longer barbs on order, some 1/4 injection hose clamps, so once they get installed should be fine. couldnt find the high pressure clamps mentioned in earlier post but the 1/4 fuel injection clamps look simular.
if it pops off again once I replace the barb fitting....im going back to stock in the engine bay and moving the 2 micron filter to the underside and put it in front of the AFE lift pump I have coming in.
I have one way teeth fittings with longer barbs on order, some 1/4 injection hose clamps, so once they get installed should be fine. couldnt find the high pressure clamps mentioned in earlier post but the 1/4 fuel injection clamps look simular.
if it pops off again once I replace the barb fitting....im going back to stock in the engine bay and moving the 2 micron filter to the underside and put it in front of the AFE lift pump I have coming in.
and no..they did not offer to pay for any of the upgrade parts I have coming in.
I have one way teeth fittings with longer barbs on order, some 1/4 injection hose clamps, so once they get installed should be fine. couldnt find the high pressure clamps mentioned in earlier post but the 1/4 fuel injection clamps look simular.
if it pops off again once I replace the barb fitting....im going back to stock in the engine bay and moving the 2 micron filter to the underside and put it in front of the AFE lift pump I have coming in.
Did you get a micron rating for the AFE filters? I thought I heard 1 micron, if they even make them....
Last edited by Overkill2; Jul 5, 2021 at 10:31 AM. Reason: Add to post
This H&S kit has the rubber hose and a new steel nozzle that won't break for the 17 plus guys I would assume who have that 3rd fitting like fritz does. 11 to 16 guys wouldn't need it. Just cap the two side ports off.
I gotta say if I went with a filter replacement set, I like the H&S filter head set up and hose better than fritz's.
then there's Smeding Diesel's set up but I can't see a hose for the 17 plus trucks.
https://www.rpidiesel.com/collection...conversion-kit
Here's fritz's setup from the site who makes the kit.
https://blackmarketperformance.com/c...el-bowl-delete
Hey fritz did it come with the hose? It just lists the return fitting on the list of contents.
Includes BIllet BMP Filter Head; Relocation Mounting Bracket ;2 Billet Quick Connects; Return Line Fitting; Cat Fuel Filter; Mounting Hardware
the problem I have is the oem return line is a 50 psi rated line.
I don’t know exactly what the pressure is in the line…but…with a stock setup the psi after the filter is mid 50’s. With this 2 micron filter, the psi is mid 60’s..
what I couldn’t find was a 75 psi 3/16th fuel line.
so I decided to roll this back.
ny plan now is to use this 2 micron filter under the cab next to the chasis mounted lift pump I am waiting on.
it would be an easy add on, and I can drop the return fitting and make the filter pass thru.
this would keep the pressures in the engine bay normal.











