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Old 02-22-2020, 09:37 AM
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Default Bosch 044 info

Just finished installing a Bosch ď044Ē fuel pump and thought I would share the information I had learned in the process as there wasnít much I could find searching all over the internet before I did it and would have appreciated a write up or two with some better information. I have no idea just how big of injectors you could run with it, but I can say with certainty, that it runs 238/80ís great. I have had these injectors for over 40k miles and have never been able to run my highest tune from one tuner or even the top two from another. I had been wanting to upgrade for quite awhile, but with a short bed, super cab the dual setups available wouldnít fit inside the frame rail and I am leery of the aeromotive and fuelab pumps in regards to longevity. I was considering fabricating my own setup, but really didnít want to deal with it since my work space is very limited right now. That pretty much meant the Bosch or Walbro was my only option and since my stock pump is still kicking at 320k+ mi I decided I trusted the Bosch the most. Also worth noting for anyone just starting a search and seeing this that the Bosch and Walbro are not rated for diesel fuel. I didnít add the cost up exactly, but I think it was right around $400 for everything.

In starting the search, first thing I found was that the part number had changed since years ago when I was researching this topic. The ď044Ē pump now has the part number 61944. The second thing worth noting is apparently the fuel pump market is full of counterfeiters selling Chinese (or other) knockoffs. It got bad enough that they now put a holographic sticker to seal the box with a number that you can go put in on Boschís website to verify it is a real Bosch pump. It seemed the same thing is happening to Walbro, but that didnít concern me right now. Also, the price on them has come down quite a bit as I have been able to find it from reputable sellers for well under the $200 mark.

I was already running a pre-pump filter/kit and post pump with fuel bowl ******. I ordered the pump, the fittings for both ends of the pump (Outlet was 12mm x 1.5 to -6 AN, Inlet was 18mm x 1.5 to -10 AN), the filter housing (2ea #10 ORB to -10 AN), and the required -10 AN pushlock fittings/fuel line. (In my case I should have got one 45* fitting for the inlet to my pre pump filter, but the straight one did work, just have to watch my line where it rubs on the edge of the fuel tank). I also ordered the 5/8Ē pickup tube and universal relay harness to run the pump.

I followed the directions for the pickup. It went pretty well, although drilling the hole for it was harder than I expected and definitely needs a good drill bit. I also found that my check valve and plastic pickup piece had disintegrated and was laying in pieces in the bottom of the tank. Good thing I donít run it right down to empty. I used the old fuel line to cut the right lengths and then installed the pushlock connectors. What a PITA...I ended up using a heat gun to get the fuel line toasty (sun isnít putting out much heat in February) and a bit of oil and still had to fight to get it all the way on. The ď044Ē pump fits in the factory bracket, but I had to remove the foam surrounding the factory one, I used some thin plastic I had laying around to wrap the new one and install it in the bracket. Seemed to work well. To use the fittings I did, you have to removed the check valve on the pump outlet that comes with the pump and then install the AN fitting. I donít think you need it and donít notice any issues, but if you are concerned, they do make high flow inline valves that you could get. Then I installed the wiring.

I tried to prime the pump as best as I could by pouring fuel in the line from the filter to the pump, but donít know if it helped or not. Then turned on the key. This fuel pump is definitely a bit louder since I couldnít ever hear it in the cab with the OEM pump. This one has a slight whine/whir, but I canít hear it at all with the truck running. I cycled the key a handful of time until I didnít hear any air being cycled through the system and fired it up. Ran like before and had solid fuel pressure. Took it for a drive to warm it up and put it in all three tunes that wouldnít hold pressure before and hammered on it a few times and the fuel pressure needle doesnít budge. So far, I couldnít be happier with the choice despite it not looking like a very popular option these days or maybe ever based on my research. Iíll report back in this thread if/when the pump dies just to close the loop since I found a few people using them for diesel and having them die, but most of those posts referenced a cheap eBay purchase so Iím hoping they were fakes.

Sorry it was so long, but I use the forums for tons of research and ideas and rarely have something like this I feel might be useful and figured Iíd give back a bit. I canít tell you how many times a thread will have everything I need to know except one or two things I need to know or dead ends without a conclusion. I know a lot of you are well beyond this, but hopefully someone can make use of it.
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2000 Ext. Cab F350 SRW, 6" Lift, 37x13.50 Toyo MT's

Upgraded Trans, head studs, Comp 910's, Smith Bros pushrods, 238/80 injectors, reg return, GT38R, etc.

-Always More Stuff Coming!
  #2  
Old 02-22-2020, 10:02 AM
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Post up some pictures, I run one as well. Bought a kit from Marty's Diesel
I made the regulator bracket

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02 CCSB X code leafs with full traction hangers on 35s
Stock motor, stock trans with TransGo valve body mods, Mishimoto trans cooler
Full Force 238/80's, Irate Diesel T4 kit, S366SXE
OUO weld on traction bars
Texas Tuned
5" MBRP
Isspro gauges
  #3  
Old 02-22-2020, 11:47 AM
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I’ll see what I can do for pictures. The write up was an afterthought while I was thinking about how well it worked and why there was minimal info on it.
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2000 Ext. Cab F350 SRW, 6" Lift, 37x13.50 Toyo MT's

Upgraded Trans, head studs, Comp 910's, Smith Bros pushrods, 238/80 injectors, reg return, GT38R, etc.

-Always More Stuff Coming!
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Old 03-06-2020, 07:19 AM
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Also very happy with Martyís kit . Nice write up


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Late 99 F-450 4X4 Dump - KC38R ,Swamps 175/146, Adrenaline , Martys Fuelw/bowl ******, Dieselsite Trans,GH tuning ,Swamps IDM, ARP's, SmithBros. 910's.
  #5  
Old 03-24-2020, 07:25 PM
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Nice write up. What’s the 044 rating vs factory?

Curious why you chose it over dual factory pumps.
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-96 F350 cclb, Billet SRP, S468FMW, P.I.S. 300/200s, A1000/Sump, BTS, OUO Ladder Bars. -1/4 mile 13.043@102.59 on 38s

-96 F350 dually sclb, 4x4, Zf5, 6637, 175/146s.

-18 F350 Lariat cclb, leveled, D-eleted.
  #6  
Old 03-24-2020, 07:44 PM
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Quote:
Originally Posted by OBS-Addiction97 View Post
Nice write up. Whatís the 044 rating vs factory?

Curious why you chose it over dual factory pumps.
I dont know the specs of either off hand.
I did this for simplicity, keeps up with 238/80s.

I did just have to make another harness, the one they sent me was corroded half way down the wire and burned up the relay- almost causing a fire
I went away from a chassis ground and grounded at the battery now. All 10awg wire.
The wiring they sent originally was audio amp power cable. I'm not sure it's a problem but it did corrode on me.

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02 CCSB X code leafs with full traction hangers on 35s
Stock motor, stock trans with TransGo valve body mods, Mishimoto trans cooler
Full Force 238/80's, Irate Diesel T4 kit, S366SXE
OUO weld on traction bars
Texas Tuned
5" MBRP
Isspro gauges
  #7  
Old 03-24-2020, 08:47 PM
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GreenF350 GreenF350 is offline
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Quote:
Originally Posted by OBS-Addiction97 View Post
Nice write up. What’s the 044 rating vs factory?

Curious why you chose it over dual factory pumps.
The “044” is supposed to be 300LPH free flow and 200LPH at 72.5 psi or at least that’s what I keep seeing advertised. I’m not sure what the factory pump specs are. I was fully planning to go with the two parallel factory pumps, but I have a short wheelbase truck and didn’t really have room to mount it on the inside of the frame rail and the fittings and such were starting to get expensive and seemed like more trouble than it was worth. The fuelab and other race pumps seem to have mixed reviews in this application, but are $400ish. The “044” is only $136 (best I could find from a reliable source) and I knew it would supply what I needed and am expecting Bosch reliability and it mounts in the factory location with minimal plumbing changes. That said, it’s not rated for diesel so....who knows if it will last? I carry a spare and I won’t fault it if it doesn’t since it isn’t made for diesel, although externally it looks just like a bigger version of the stocker.

-Aaron

Guess I better get off my rear and get those pictures too!
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2000 Ext. Cab F350 SRW, 6" Lift, 37x13.50 Toyo MT's

Upgraded Trans, head studs, Comp 910's, Smith Bros pushrods, 238/80 injectors, reg return, GT38R, etc.

-Always More Stuff Coming!
  #8  
Old 03-24-2020, 09:29 PM
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Twin Bosch from 444fab is what I like . If the primary fails backup is right there .
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File Type: jpg 20190627_235746.jpg (180.7 KB, 37 views)
  #9  
Old 03-24-2020, 09:31 PM
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Quote:
Originally Posted by 78-79fordman View Post
Twin Bosch from 444fab is what I like . If the primary fails backup is right there .
That's a clean setup

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02 CCSB X code leafs with full traction hangers on 35s
Stock motor, stock trans with TransGo valve body mods, Mishimoto trans cooler
Full Force 238/80's, Irate Diesel T4 kit, S366SXE
OUO weld on traction bars
Texas Tuned
5" MBRP
Isspro gauges
  #10  
Old 03-24-2020, 10:10 PM
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78-79fordman 78-79fordman is offline
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Quote:
Originally Posted by Dmstrucks02 View Post
That's a clean setup

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Yap there worth the money. I have two of them one on each obs . Saving for one to go on my superduty. I am a probley a little over complicated on my wiring for them as I have the secondary pump wired to activate by a boost gauge which can turn it on and off . Or I can on manually with a switch or off .

Last edited by 78-79fordman; 03-24-2020 at 10:15 PM.
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