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1971 350SL
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42 Posts
Discussion Starter #1
Hello, I own a 1971 350SL. My fuel pump died last year, so I ordered a cheap reproduction fuel pump... And since that time I had a few strange problems. My car also has a pulsation damper near the fuel pump and filter. When I changed the fuel pump II also changed the fuel filter and the rubber hoses... I also changed the hoses to the pulsation damper.

Now I have occasional problems like stalling and rough ride... Is it possiblle that this is the fuel pump problem or the pulsation damper (since I do not knnow what does it do)? Why is the pulsation damper there? As I understand, only very early cars had those...
Or could this be the fuel pump problem? Do I need special fuel pump for Bosch D Jetronic?

Best regards, J
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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31,991 Posts
The damper cage on early models is hollow.. From what I have read it reduces the chance of cavitation. Yes you need the correct pump.
 

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1973 450 SL
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1,885 Posts
Here is an alternate source for the correct fuel pump from Nissan. This pump was made by JECS under a Bosch license. I have 2 of them from salvage cars. I have run them on my car; identical function and I like the check valve on them a little better than the OE Bosch.

Nissan 17011-P7211

If your original pump died electrically, it's a goner. If it was just leaking, or gummed up and not turning, they can be rebuilt.
 

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1971 350SL
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42 Posts
Discussion Starter #4
Can anyone tell.me how can I identify which Jetronic do I have in my SL... since I am new to MB world and not familiar with these sistems...

Does anyone know the Bosch pump serial numbers for D or K Jetronik? I assume the pumps are different for each system...

Thx, J
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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31,991 Posts
MB part number 001 091 71 01. You have D-Jet.
 

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1971 350SL
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42 Posts
Discussion Starter #6
MB part number 001 091 71 01. You have D-Jet.
Thanx for replys...

Why is this pump different than the others? I will buy a new pump, but I would like to be sure which pump to buy since these pumps are not cheap... Does this number MB 001 091 71 01 mean that I can also buy similar BOSCH 001 091 71 01 pump that will work ok as well?

About D-Jet... how can I be sure that it is truly D-Jet? What compoonents are different? Any specific engine compartment part ?

Thanx
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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31,991 Posts
D-Jet is electronic injection. K-Jet is not. Start reading section 07.4) of the EGv107 Sticky:

D-Jet operates at a lower pressure than K-Jet. MB part number is not the same as Bosch part number.

Read post 3 of this thread.

Pic. of '73 D-Jet 4.5. Yours would be similar only the 3.5 has yellow injectors.

450SL engine refinish.jpg
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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10,145 Posts
Bosch advised re their new djet pump: "0 580 464 999 is a parts set, containing the fuel pump 0 580 464 042 and several adapters".
It's not a great replacement, but other than Nissan pump, probably only game in town. MB sell that same pump as a Djet replacement using original MB part number. If you check on Pelican/Peachparts, they offer both.

The Nissan 280Z pump is same as the original Djet pump, and is probably the best choice. Cost about same.
 

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1971 350SL
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42 Posts
Discussion Starter #9
Thank you all for your replys... I was very busy last week... My engine looks like on the Rowdies picture ... So I have Djet...
So, MB part number is 001 091 71 01 ?
What about : Bosch advised re their new djet pump: "0 580 464 999 is a parts set, containing the fuel pump 0 580 464 042 and several adapters".
Is this the same pump?
As I remember, my previous pump looked like this one : 001 091 7101: FUEL FEED PUMP for Mercedes 107.043 (350SL)
Must I buy original MB 001 091 71 01 pump, or can I buy a Bosch or similar pump?

Best regards, J
 

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1971 350SL
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42 Posts
Discussion Starter #11
See post #3.
I live in Europe and could not find this pump online. Also searched through ebay and found this :
17011-P7211 | eBay

So there is no ordinary Bosch fuel pump to buy? The hits on ebay for Bosch 0 580 464 042 are :
0 580 464 042 | eBay

If there is no other alternative pump then I will order a Nissan pump from the USA...

Thanks, J
 

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1971 350SL
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42 Posts
Discussion Starter #12
Why is this Nissan or original MB pump so special? Or why is Djet pump different than other 3bar pumps? I can buy a reproduction (MEAT & DORIA) of this Nissan or MB pump at my local parts store... why does it have to be original Nissan or MB part?

Thanx, J
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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10,145 Posts
You can do whatever you wish. You have received some good advice here based on experience of other owners. Ignore it if you wish - It's your car.

The original pump was designed for these cars. The only pump that is equivalent is the Nissan pump. Next choice is the current pump that MB sell or the identical Bosch. Those pumps are physically a different shape, produce much higher pressure and are in my opinion, a distant second choice to the Original/Nissan. But better than cheap knock-offs. Only originals available are used ones.
 

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1973 450sl
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4 Posts
Based on the advice presented in this and other threads by MB Graham, Rowdie and others, I went with the Nissan pump to replace the original on my 1973 450sl. Several months and miles later, I am happy that I listened!
 

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1971 350SL
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42 Posts
Discussion Starter #15
Thanx for explaining, why the original or Nissan pump is better than newer pumps. I used to have a bmw e24 with motronic system and I used 2 different cheap pumps without a problem... Now it is time to find a Nissan pump :)

Best regards, J
 

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1971 350SL
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42 Posts
Discussion Starter #16
My fuel pump research came out with this :
Bosch offers for early r107: https://www.partsinmotion.co.uk/xlist/80/0580254985SI0000COB300.pdf
https://www.partsinmotion.co.uk/xlist/80/0580254013SI0000COB9MM.pdf
MERCEDES 350SL R107 3.5 Fuel Pump In Line 71 to 80 Bosch A0010917101 0010917101 4047024595019 | eBay
Lots of info on this subject...
8. Fuel pumpe & pressure regulator

This is just for others that are searching for the same fuel pump related solution...

Thanx everybody for their help!

Best regards, J
 

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'71 350SL, '76 450SLC (Euro both)
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212 Posts
Here is an alternate source for the correct fuel pump from Nissan. This pump was made by JECS under a Bosch license. I have 2 of them from salvage cars. I have run them on my car; identical function and I like the check valve on them a little better than the OE Bosch.

Nissan 17011-P7211

If your original pump died electrically, it's a goner. If it was just leaking, or gummed up and not turning, they can be rebuilt.
Sweet! Thanks for the gouge. Wrote it in my "Tome of Knowledge" for when the day comes. When dealing with Porsche or Mercedes FI parts, alternates are needed to work around the NLA issues and a great way to save $$.
 
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