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Bosch 044 fuel pump install ..in the rear

Installed a new Bosch 044 fuel pump in the back today.
Hardest part was wiggling and pushing the new rubber boots over the wire terminals after I had the pump installed. Not much hand room down there while laying on your back under the car.

I took off the check valve and used the banjo bolt from the origonil pump in a check valve spacer because the front pump has one so there's no need for another one on the rear pump. Thats how the origonal pumps are set up and this way I didn't have to buy a banjo cap nut for the check valve or make one out of the other check valve spacer by cutting off the male threads and brazing up the hole.

I bought an M18x1.5 to M14x1.5 reducer for the 044 inlet threads that let me use the fuel inlet fitting from the original rear 930 pump from British American Transfer in Sarasota, Florida. British American Transfer.
It's very well made. part number is 912-18-14 on web page http://97.74.32.155/files/metric.pdf

I have to thank David Cole for turning me on to BAT. They have more of this kind of stuff than anywhere else in the states and no one else had one with metric threads.
All the custom made alternatives were more expensive and then some...

Good things travel in pairs... 044 fuel pumps do too.

I snapped a few pics before and after installing it.
Both 044 pumps are running smooth and quiet.






Last edited by JFairman; 01-12-2014 at 06:41 PM..
Old 01-12-2014, 06:38 PM
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What kind of fitting do you have on the fuel line for the feed side, is it a 180'? Thanks.
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Old 01-14-2014, 06:55 PM
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Yes, the original fuel lines down there are still in the car and the feed line has a steel 180 on the end that fits the original conical fitting.

Yesterday I got under there again and loosened the hose clamp that holds the fuel pump in it's mount and slid it towards the back of the car a little so the convex ridge around the fuel pump fits into the concave ridge in it's mount and snugged the hose clamp so it's on there straight.
It looks better now.
Old 01-14-2014, 07:13 PM
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Quote:
Originally Posted by JFairman View Post
It looks better now.
Well that's good, `cause I can't be the only one who was concerned about the aesthetics of your first attempt.
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Old 01-14-2014, 07:31 PM
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Yeah I was about to heckle him for his misinstallation, good thing your fixed it STAT!

Kidding aside, thanks for the detailed notes and pics... this is very much on my to-do list (pretend world happy place type stuff) that I hope to get to.

Lucky you, I'll more than likely pick yer cranium fer some handholding (again / as usual) when that time comes 8-).

Well done, like always...
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| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 01-14-2014, 09:01 PM
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Wish you could have done this before I did mine, what a PITA trying to find that fuel fitting adapter! I wasted so much time and money buying crap that didn't fit right.
As always thanks for the tutorial Jim.
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Old 01-15-2014, 05:08 AM
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You can also take the conical fitting from the inlet side of the 930 pump and braze it into one of those generic spark plug spacers they sell for cars that burn a lot of oil to try and keep the plugs from fouling as fast. Then use that for the inlet side of the 044 pump while using the original fuel lines.
Many sparkplugs and oxygen sensors are the same M18x1.5 threads as the inlet of the 044 pump so one of those would work if you have the torches for brazing... and you want to save around 20 bucks.

I found another 930 rear fuel pump inlet fitting in my collection of fittings today. I didn't know I had it. I guess it was from another rear 930 fuel pump I used to have. This one has no corrosion or wrench marks in the gold cadmium plating like the one I used on my 044 pump install.
It kinda makes me want to remove the pump and put this one on but thats too much work for something you can't see when it's installed.

It's the fitting on the right in this pic.


...yeah i know i'm nuts but i'm in good company
Old 01-15-2014, 05:59 PM
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Morning, Jimster...

Revisiting this, as promised 8-)

Where did you source the "check valve spacer"? Is that the shiny silver 1" 'nut' seen on the right side of the pic in the 3rd pic?

Also... is yours made in Germany or Czech? I thought the Czech ones were garbage, but someone here is telling me oppositelylike.

I hear stories all over an Audi board about junk 044 early failures, prefer to avoid...

Thanks brutha...
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Paul... CT | '87 930 | '08 M3 6gang vert |
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| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 03-06-2014, 06:48 AM
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Hi Paul, they come with the check valve spacer on them. You just have to tighten them because they aren't always tight when you get them.
You don't have to use the check valve spacer on some of them if it makes the pump too long but it makes it much easier to get an open end wrench on to the check valve if you have to. That comes in handy because sometimes when you loosen the cap nut to remove the banjo fitting the check valve comes loose and unscrews instead of the cap nut so you have to put a wrench on the check valve to keep it from turning while loosening the cap nut.

Like many bolts and nuts I put a drop of motor oil on the cap nut threads to help it turn easier when tightening it.

All Bosch 044 pumps are made in Czech Republic now. They seem to work fine but they are noisier than the original stock ones.
Old 03-06-2014, 07:36 AM
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Great, thanks Jim.

Ordering one now, two possibly.

I recall you run one up front too - any install SNAFU's there or just P&P?

for $250 shipped for a pair, I figured good way to rule out any fuel starvation issues 8-)

New in Box Genuine Bosch 0580254044 300LPH 044 External Inline 700 HP Fuel Pump | eBay

It's not like I don't have enough simultaneously concurrent projects goin on up in the air right now! Call it... cabin fever. I'm already dedicated fuse'd so the load shouldn't be an issue...
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Paul... CT | '87 930 | '08 M3 6gang vert |
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| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 03-06-2014, 08:06 AM
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XRP now makes fittings for 044 pumps to add filters and convert them to AN fittings.



Paul, be very careful buying Bosch 044 pumps from untrusted sources. There are many counterfeit pumps out there.

BOSCH 044 real and knockoffs --read this-- - RX7Club.com
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Old 03-06-2014, 10:32 AM
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Great, thanks much for that - always wondered what the 'tells' were. Got it.

The inlet fitting should be easy to spot. Unfort the item I linked is laying flat - I've questioned the seller via ebay, we'll see if I even get a response...

What would be your suggested source then?
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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 03-06-2014, 10:46 AM
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I hope you get good ones in sealed plastic bags inside the box. The copper sealing washers on new ones are always shiny fresh copper color like a new penny and the ones in the picture in your link are tarnished copper color.
Also the check valve flats look like they may have wrench marks on the edges around the points.

When new they come in sealed thick plastic bag in the box. Can't see the numbers on that pump because it's turned but at least there's no scratches from being mounted with a hose clamp.
Thats a real good price if you get new ones. I think it's below wholesale.

I've posted links to the adapter fittings for the front and rear inlets to put 044 pumps in a 930 and the little steel cone fitting on the rear inlet is the same as the one on a Mahle fuel filter for a 930 so save those when you toss out an old fuel filter. I have never found them for sale anywhere but they come on the new fuel filters.
Old 03-06-2014, 11:20 AM
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I too tried to zoom in on those ad pics, I think the marks are just 'handling' nicks not from wrench and the copper color is too hard to form an opinion on as it's the side profile and not a hi res pic.

that fleabay guy confirmed inlet is 18mm - guess I'll give it a whirl

so, the fittings... you need 2 then of those black BAT reducers... one F&R?

The cone fitting... that's something you're saying to save from future fuel filters right, not something I need to install 2 new 044's? Sorry just trying to confirm your thoughts.

mucho appreciatto
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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 03-06-2014, 12:09 PM
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I can zoom in real well on it with my 27" monitor and high end graphics card... it doesn't look new to me but that doesn't matter if it works good.

For the front pump I used an AN fitting with a push on barbed hose fitting for the 12mm inner diameter hose off the fuel tank screwed on to it which was less than half the price of anything custom made. I bought it locally.

Here's some pics of different 044 installations on my car. I've installed 5 of them now.
The rubber cover that fits the 044 like a glove is a 993 part and it muffles some of the buzzing noise from the front pump which always seems louder than the rear pump.
I would be out working on my car instead of doodleing away here right now but it started raining so I can't work on it.






Old 03-06-2014, 01:03 PM
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awesome, thanks - glad it's raining 8-)

will try to source that barb'd fitting @ BAT too... (rather than that other place you mentioned pre-edit heh heh)

the one pictured may not be the actual one they're sending, since I ordered 2 that'd be difficult 8-)

Pay Pal and eBay's $$$ back guarantee purchase so for $248 shipped for a pair what they hey right? We'll see...

Pretty excited for this... I'd not gotten around to the output test on mine, but my fuses and wiring (pre-dedicated-inline'ers) are pretttttty 'hot' and corroded. Guessing the pumps are producing a good load (were frying the fuse - undriveable - before the Shadetree'er fix yearseses ago)...
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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 03-06-2014, 01:13 PM
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Thats a very good price, the other place charges more than that for one of them and so does pelican and then you have to add on shipping.

You're right, they probably send you a different one than the one pictured and you know one of them has to be a different one.

Enjoy them, they are very nice fuel pumps and will pump more than enough gas for CIS and most EFI motors running E10 gasoline.

edit: the rain has moved out to sea so now it's annoying drizzle.
http://www.accuweather.com/en/us/miami-fl/weather-radar-r1h?play=true

Last edited by JFairman; 03-06-2014 at 01:28 PM..
Old 03-06-2014, 01:26 PM
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I thought we could get away with a single 044??? Now we need two or are you over compensating Jim?
Old 03-07-2014, 06:28 PM
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I don't know, maybe....
maybe one is enough. I never tried just one.

at least they don't argue with each other.
Old 03-07-2014, 06:42 PM
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just received my 2 044's - both are:

- packed exceptionally well
- in darker yellow (not faded) yellow Bosch boxes
- wrapped in thick sealed plastic bags as Jim pointed out they should
- shiny new with brilliant copper washers, etc.
- marked "made in Czech" on the box and engraved into the casings
- with 18mm inlet fittings


Seems like a huge win for $249 shipped for the pair. Phew!

for anyone else looking, this was a great transaction: New in Box Genuine Bosch 0580254044 300LPH 044 External Inline 700 HP Fuel Pump | eBay

Also arriving today were a pair of adapter fittings from Chris Carroll - he'd reached out to me upon seeing this offering to provide the F&R adapter fittings needed and at a reasonable price - THANKS CHRIS!

Looking forward to install... thanks again Jim for all the handholding, as usual... cannot overstate that
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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 03-10-2014, 08:56 AM
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