Johnson cm30 verses Bosch
MBWorld Fanatic!
Joined: Sep 2008
Posts: 3,575
Likes: 8
From: BC
Haters crazy
So todays meet sparked this question all over again... bosch vs cm30...
people who are using cm30 say its the best
people who are using bosch say its the best
people who are using miezzere say its the best
anybody have actually flow etc specs on these even?
people who are using cm30 say its the best
people who are using bosch say its the best
people who are using miezzere say its the best
anybody have actually flow etc specs on these even?
Super Member
Joined: Oct 2009
Posts: 661
Likes: 3
From: Saudi Arabia - Qatif
Brabus K8 E55 05
Ok, here is the thing, I used Johnson cm 30 and I can tell that the car felt hot some how specially under the hood and fans run some of the times specially when weather is hot. Then, I used Meziere and I could not notice the car feels hot under the hood. When I changed back to Stock Bosch with serial ends up with 86, I can feel that the car is hot again and it is only around 28 - 32 Deg C here and the fans start between time to time.
Bottom of the line, go with Meziere, it has louder sound, yes, it consume more current, yes, but gives you more cooling for your system.
Bottom of the line, go with Meziere, it has louder sound, yes, it consume more current, yes, but gives you more cooling for your system.
Newbie
Joined: May 2011
Posts: 1
Likes: 1
From: South Africa
2002 C32 AMG
Bosch part number
Hallo all, I have done some research regarding the CM 30 vs. Bosch and found that the Bosch has changed the part numbers accordingly.
First they had the 0 392 022 002, working on some of our cars but you will see that this pump has a smaller inlet and outlet port measuring 19mm in diameter. There is a lot of treads replacing this cheaper version with the 0 392 022 003 and then change the impeller housing from the old to the new increasing the port size to 22mm in diameter.
The 0 392 022 003 was produced at about the same time as the 002 but due to the flow rate at different pressure and port diameter the part numbers were different. The 003 is more commonly used in our cars and is the result of the damage caused to the Bosch pumps reliability image.
They have manufactured the 0 392 022 010 to replace the 003. You will find that the 010 has an even better flow rate under pressure and should be the latest Bosch available for our cars and the one available from your MB dealer at a very high price.
Log on to Google using "Bosch 0 392 022 010" and this should link you to all the info that you require.
The site even takes you to a site in CA Simi Valley that you can buy the OEM Bosch pump from at a very reasonable price compared to the dealer network.
Hope this helps.
First they had the 0 392 022 002, working on some of our cars but you will see that this pump has a smaller inlet and outlet port measuring 19mm in diameter. There is a lot of treads replacing this cheaper version with the 0 392 022 003 and then change the impeller housing from the old to the new increasing the port size to 22mm in diameter.
The 0 392 022 003 was produced at about the same time as the 002 but due to the flow rate at different pressure and port diameter the part numbers were different. The 003 is more commonly used in our cars and is the result of the damage caused to the Bosch pumps reliability image.
They have manufactured the 0 392 022 010 to replace the 003. You will find that the 010 has an even better flow rate under pressure and should be the latest Bosch available for our cars and the one available from your MB dealer at a very high price.
Log on to Google using "Bosch 0 392 022 010" and this should link you to all the info that you require.
The site even takes you to a site in CA Simi Valley that you can buy the OEM Bosch pump from at a very reasonable price compared to the dealer network.
Hope this helps.
Super Member
Joined: May 2009
Posts: 511
Likes: 2
From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
Thanks for the heads up. I ordered a Bosch pump per reference of this forum off ebay, and it appears I have the 0 392 022 010 p/n.
I'm glad to know I picked the right one.
I'm glad to know I picked the right one.
Super Member
Joined: Jan 2011
Posts: 615
Likes: 0
2017 991.2 Turbo PDK 2017 C63S Coupe Ceramic Brakes 2015 CLS63S AMG Full House
My MB dealer just replaced my E with water pump A 000 500 0386, Good God, she is an absolute Demon Animal Beast now. Our days are fairly hot for now, in JHB. Above Sea Level too, but damn she pulls even meaner than before.
Member
Joined: Sep 2011
Posts: 143
Likes: 0
05 E55
Thread bumped from rigormortis. 
Anyway-I installed this bosch HD pump right after I bought my car (05 with 27k miles) and I had the same results. Car pulls much harder with just pump change and I did 10 back to back 0-90-0mph to test it and no evidence of powerloss noticeable on butt dyno.
New H/E sitting in garage waiting for me to install...being a wuss about the cold weather lately though.
Anyway-I installed this bosch HD pump right after I bought my car (05 with 27k miles) and I had the same results. Car pulls much harder with just pump change and I did 10 back to back 0-90-0mph to test it and no evidence of powerloss noticeable on butt dyno.
New H/E sitting in garage waiting for me to install...being a wuss about the cold weather lately though.
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MBWorld Fanatic!
Joined: Dec 2008
Posts: 4,411
Likes: 69
From: Socal, Chino
E55 2006 / CLS55 / S450 / Jag XKR2011
are they the same IC pump and the water pump ?
MBWorld Fanatic!
Joined: Mar 2008
Posts: 1,230
Likes: 32
From: Vancouver, BC
CLS55 AMG
here's a bosch for $105.
http://www.texasaircooled.com/catalo...ater-Pump.html
and here's one on ebay for $99 with free shipping
http://www.ebay.com/itm/New-Bosch-El...item2eb9a859da
parts.com wants $259.20 for it
0005000386 $360.00 $0.00 $259.20
COOLANT PUMP
http://www.texasaircooled.com/catalo...ater-Pump.html
and here's one on ebay for $99 with free shipping
http://www.ebay.com/itm/New-Bosch-El...item2eb9a859da
parts.com wants $259.20 for it
0005000386 $360.00 $0.00 $259.20
COOLANT PUMP
MBWorld Fanatic!
Joined: Mar 2008
Posts: 1,230
Likes: 32
From: Vancouver, BC
CLS55 AMG
i'd like to find out who makes this pump... looks like good quality, but for $899 it's way overpriced
http://www.purems.com/Products/MS100...ormance-System
http://www.purems.com/Products/MS100...ormance-System
MBWorld Fanatic!
Joined: Mar 2008
Posts: 1,230
Likes: 32
From: Vancouver, BC
CLS55 AMG
here's a pump on the cheap end.... anyone think it's worth a try? same 19mm outlet, flows 8GPM
$53 shipped.
http://www.ebay.com/itm/Intercooler-...sories&vxp=mtr
$53 shipped.
http://www.ebay.com/itm/Intercooler-...sories&vxp=mtr
Super Member
Joined: Jan 2003
Posts: 527
Likes: 9
e63 p30 estate
MBWorld Fanatic!
Joined: Feb 2011
Posts: 1,752
Likes: 175
From: London, UK
W212 - E63 AMG
Anyway, I'm going to be fitting it to my E55 today hopefully, so I'll report back if I notice any change in performance.
MBWorld Fanatic!
Joined: Feb 2011
Posts: 1,752
Likes: 175
From: London, UK
W212 - E63 AMG
Ok so I fitted it today and tbh there wasn't any problem in the first place (i just wanted to upgrade for the hell of it) so I can't really comment on any power gains via having cooler temps on the butt-dyno.
Can somebody please tell me if I bled the system in the correct way? I simply removed the bleed nipple and reservoir cap for a few minutes with the car idling, then I added the nipple back and let the car idle for 10 minutes. Hot air was coming out of the vents in the cabin, so I assumed it was okay. After driving it, I can't say that there was any difference at all. My old pump ended in 86 - i'll get more details on that one tomorrow.
Looking at this vid:
The guy attaches a hose to the bleed nipple and routes it back into the reservoir. Does this mean that my method was wrong? Is it a difference cooling system for the 'charger?
Can somebody please tell me if I bled the system in the correct way? I simply removed the bleed nipple and reservoir cap for a few minutes with the car idling, then I added the nipple back and let the car idle for 10 minutes. Hot air was coming out of the vents in the cabin, so I assumed it was okay. After driving it, I can't say that there was any difference at all. My old pump ended in 86 - i'll get more details on that one tomorrow.
Looking at this vid:
The guy attaches a hose to the bleed nipple and routes it back into the reservoir. Does this mean that my method was wrong? Is it a difference cooling system for the 'charger?
