Coolant Output Pipe Leak

[nthomas06]

Ok, I have no idea what the coolant output pipe is. All I know is it is in the back(?) of the engine and it has to be replaced. My repair guy hasn't yet looked at the car, my appointment is tomorrow. Can anyone give me any info about this or correct me if I am wrong. I have been searching for a diagram of the engine and output pipe but can't seem to find on the internet. Any help would be greatly appreciated. Thanks!

[marleymon]

http://realoem.com/bmw/diagrams/c/c/6.png

is #1 the one on the back?

[nthomas06]

Thanks for the picture. Do you know anything more about the output pipe? Also, where did you find the picture? Thanks again so much!

[marleymon]

well- not sure if #1 is the right pipe....someone here will know and may come up w/ a part#.

realoem.com is your friend....plug in the last 7 dgits of your vin starting with AM..... and bookmark it.

anyone? what's the infamous pipe in back..?

[nthomas06]

Thanks. I found this pic of the cooling system and hoses along with a list of the numbered items.

http://www.realoem.com/bmw/showparts.do?model=CG73&mospid=47506&btnr=11_1567&hg=11&fg=35

No. Description Supplement Qty From Up To Part Number Price Notes
01 WATER HOSE 1 11531743535 $18.86
02 WATER HOSE 1 11531247261 $8.59
03 HOSE CLAMP L42-48 4 07129952119
04 WATER HOSE 1 11531743295 $30.41 +core
05 HOSE CLAMP L28-33 1 07129952113
06 HOSE CLAMP L16-30 1 64218367179 $1.00
07 HOSE CLAMP L18-24 2 07129952109
08 HOSE CLAMP L15-19 2 07129952107
09 WATER HOSE 1 11531247398 $11.38
10 CABLE STRAP 120MM 2 32411112282 $0.47
11 HOSE 1 11151247903 $33.76
12 HOSE F ENGINE INLET AND WATER VALVE 1 64211394295 $25.95
13 HOSE F RADIATOR AND ENGINE RETURN 1 64211387010 $14.17
14 HOSE CLAMP L28-33 1 07129952113
15 HOSE CLAMP L16-30 3 64218367179 $1.00

Notes:

[cooljess76]

That plastic coolant line is the one that goes along the top of the engine underneath the intake manifold. The one that is in the back of the engine is shaped like a "y" and is part# 11531743679. It's #9 in this diagram:
http://www.realoem.com/bmw/showparts.do?model=CG73&mospid=47506&btnr=11_1561&hg=11&fg=15
There's only 2 bolts holding it on, but it's a PITA to access. Someone said that it's easier to get to with the valve cover off. Since it's only a 8 dollar part, you might want to consider doing the work yourself. Also, I'd recommend replacing the part that Marleymon mentioned as that line is notorious for breaking as well.

[nthomas06]

Hey thanks for your helped. I took the car to the specialist. He said (without yet looking at the car) that what he thinks I am talking about is a pipe that is a cast piece with the engine head(?). If so I have to replace the head or he has to drill out the pipe and put in a new pipe with a pipe fitting. That is basically what I understood and remember. He should be calling me within the next couple of hours. Hopefully it is something easier than that. I will keep you posted.

[marleymon]

thanks Cool- I ordered the #1 up there...I guess I need to order the one in the rear too #9 with a valve cover gasket set also.....

btw- I never done the VC gasket...easy jobber? im searchin....

i'm doing a thermo,aguapump, new rad($128 behr on fleabay), hoses, might as well do these too...

[nthomas06]

Hi thanks for all the help. The repair guy called. Turns out it wasn't the "coolant outlet pipe" the one casted to the engine head. IT was a plastic coolant flange that broke. So not so bad. Should have my car back today. THank all!

[adamud]

I just recently replaced the #9 plastic Y on the back of the engine. That was a pretty hard job. Not much hand space behind there! I might be able to help someone if they have questions on doing the #9 installation.

[phearless12]

Hey i need to replace the #9 pipe. My engine is leaking coolant and its coming from the back of the block and i think what u have done will fix the problem. Was the job really hard? Do i have to replace any other parts to get to this one? could u walk me thro on the replacing the part?