HELP! Cant find a W124 Expansion Tank to buy.
 

I need a new expansion tank (1245001849) for my 1987 W124 300D, like this one offered by our host site here:

1987 Mercedes-Benz 300D Base Sedan - Radiators - Page 3

However, I have tried 5 places now (Peach, parts.com, ebay, autohauz) and everyone accepted my order then sent an email saying they don't have it and are issuing a refund. Called the Dealer and they say it is unavailable and out of production.

Anyone know where to get one?

Thanks,

Geoff

Shoot a note to David Hendy at dhendy3697@aol.com

He may have a second hand one

Any possibility that the tank from a later W124 could be made to fit/work?

Odd. I had no trouble getting my 87 turbo 190 tank from the dealer... I'll call my guy and get you a firm quote. May have to wait for it to arrive from Germany

Just put the part number you have into a search engine and wade through the hits. I get pages and pages of offerings...

I need the last 8 digits of your vin to quote the tank.

Thanks, for the help.

I have done a search for the part and keep running into the same thing, they say they have it then it turns out they don't. tried lots of sources. I am going to go to the yard today and see if either of the 2 models there have a tank that looks like it is in good shape although I wanted a new one since mine appears good until it get pressurized (at least I think that is the case). This is all part of the rundown to figure out my cooling issue.

VSTECH the VIN is WDBEB33D3HA371870.

Thanks again for the help.

I'm pretty sure I have one, it's in good condition but the plastic was discolored so I replaced it when I installed the engine, just a cosmetic thing.

I'll look later today, if it's here and I can find a suitable box I'll let you have it for shipping. Can't guarantee it's here (yet) though.

I presume you are looking for the expansion tank near the turbo, not the overflow tank in the fender?

The expansion tank contains a silica gel tank, which maintains the coolant corrosion protection. Although a used tank can probably do everything else, a new tank would be preferable in the long run.

Note that performing the acid flush of the cooling system will kill that silica pack, so hold onto your old tank if you plan to do an acid flush in the future, and swap in the old tank for the flush.

Another possible source for a new tank: Thomas Hanson at the Classic Center, 1 949-598-4842

Maybe shoot these guys an email to see if they have one.
http://www.mercedesautoworks.com/124_chasis_engine_cooling_system1.htm#cool recovery tank0

The original tank did not have the SCA pack in it, perhaps later 124 models did, I don't believe that my new dealer/OE tank that I bought/installed 5-6years ago has one.

If you install the proper HOAT coolant / MB-spec., and observe proper change intervals I suspect that you will be fine as this is a dry-sleeve engine and designed with the original configuration. If you are able to find a new tank, certainly I'd prefer (and did so) to install new OE.

thanks for all the offers for used tanks. I found a new tank! Going to replace it this weekend. Hopefully that solves my heating issue.

Hupomone where did you find your tank, I need one?

Crap!

the new tank I got doesn't fit in the location of the old tank. Old (original) tank is #1245000949, new tank is #1245001749, I thought I was getting 1245001849. the old tank has the level switch on the end and the radiator hose going to the bottom. The new tank has the level switch and hose connection from the side and so there is no way to reinstall the air filer assembly plus I cant get the hose to connect because if it is metal pipe until about 4 inches from the expansion tank.

Any ideas other than looking for a new 1245001849 tank?

Also my current tank definitely has a leak around the cap collar where it connects to the plastic tank, as you can see bubbles as the engine gets hot now that I have a new cap that works correctly.

...back to an internet search then...

Any luck finding a new coolant expansion tank? Are there no after market suppliers of these tanks? I have spent the last few hours searching and every site says NLA or currently out of stock. Guess I will keep searching and maybe call the Classic center on Monday. Mine is still in ok condition, just looks awful. I currently have radiator pulled to thoroughly flush A/C system and thought no better time than the present to go ahead and replace resevoir/tank. Any suggestions as always appreciated.

Received email back from Classic Center this morning, they have no tanks either. Guess I will just stockpile a few when I run across them in the pull yards.

The expansion tank, part # 1245001849, is no longer available NLA. What would you suggest to do? I am thinking of hacking a W124,W126 expansion tank to fit. Which one would be a better fit or available?

Could you post some photos? When I needed a new tank for my 190DT, the stock oem item was something like $250. But Mercedes apparently invented the same thing over and over again. I found that the tank from a V8 124 was a different part number, but identical in every dimension at 1/3 the cost.

I just bought, supposed to be new old stock, from eBay. They don't have picture but the part number matches. We will see whether the seller can deliver! This is the picture I found from the Internet. I am sure I can hack something from other models as a last resort.

http://www.peachparts.com/shopforum/...d_exp_tank.jpg

I had trouble too but just found one
 

I was lucky! I found one!

The 300e ones are available for just $18 but the 300d ones are all NLA, "No Longer Available".

It really doesn't look different from the gasser tank, which carries pn 1245001349:

The gasser one won't fit. Too big for the area
 

You can't use one from a 300e on a 300d, won't work.

What is the difference?

So what exactly is so damn special about the 300d tank vs the 300e tank?
http://cdn4.pelicanparts.com/catalog...001549-M22.jpg
The only diff I see is the thin hose from the top of the radiator tank moves from the left side of the tank to the right.
https://anappleaday.net.au/wp-conten...n-molehill.gif

No such thing as a V8 W124
 

They don't exist.

The gasser tank is TOO BIG. IT WON"T FIT.
 

Won't fit into the area.

The 300e tank is BIGGER. It will NOT FIT into the area.
 

It won't work. The 300e tank is way too big for the area.

E320 tank is identical to the 300d.
http://cdn4.pelicanparts.com/techart...mall/pic01.jpg
http://www.peachparts.com/shopforum/...d_exp_tank.jpg
This is a non issue.

V8 engine W124 chassis cars do exist, they were

400E
E420
500E
E500

legendary cars.. :cool:

When I looked on the regular US eBay they listed 190D Coolant Recovery Tanks for about $19 and Some by Meyle on up to $30. Don't know if there is differences in years and unforunately sometimes the Sellers don't know much about what they are selling.

But, if you are not in a hurry you can email the Seller and witnin 2 days they usally answer.

The 190DT uses a unique recovery tank (2015000249/2015000549), which is priced like solid gold. Fortunately, it's a direct interchange with the tank used in a 400E (1245001549). But that's not the OP's problem.

The seller cancelled the transaction, NLA. So I need to find a similar one to hack.

Tank
 

Tis is what i found .300D 1245001749 . All W124 look the same to me .. This is the same as my 260E W124 M103 This was take right off Ebay listing for a 300D

It looks similar but it's NOT.
 

Totally different tank.

1) Hose connections are in wrong place
2) It won't fit in. It's too big.

Since I had the same issue finding a replacement tank for my 87 300TD I took the information and got a tank from a 90's 400E.

The tank is larger in size but I made it work with tightening mounting nuts for the tank and air cleaner housing in stages.

You can see the size differences between the old and replacement tank in the pictures. The only thing I don't like the fitment of is the lower hose. It's secure but not pushed onto the neck as far as the old one.

I'll add the part number of the replacement tank when I get back home.

Well show us a picture of your tank .

This part is an exact fit of the 1987 300D diesel. 124 500 13 49,1245001349. I just bought one and it is literally the SAME.

ah-kay's results on my 1987 300D confirmed.

Bumping an old thread... does anyone know if the currently-available aftermarket (Febi/Rein) tanks, 124-500-13-49, have the silica pack inside?