Hi:

I'm trying to replace all of the rubber heater hoses on my 84 300 Turbo Diesel.

Found everything except MB part A123 832 8994, which Peachparts reports as no longer available from MB.

This is one of the heater return lines on the right hand side of the firewall, one of those "S" shaped hoses about 10" long.

In the picture below it's the one on the right-hand side marked with a red "X."

Anybody else run into this problem when buying these replacement hoses? If it's NLA and I can't find it anywhere else, can this hose be fabricated, such as by a hydraulic hose shop? Don't know if a regular straight line could be used somehow since I've never not been able to buy replacement hoses.

I'd appreciate any ideas that any of you might have on this one.

Thanks,
Eric

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Remove the hose and take it to the parts store. If NLA, you will be matching it up with something close. Measure the fitting so that you know the diameter and convert to inches before going to the store.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

When you say right side, do you mean the picture's right side or do you mean the passenger side of the car? You have two "X" marked hoses.

I compiled a list of heater hose part numbers on the link below and it appears those "X"ed out hoses don't have that part number you listed.

W123 Coolant and Heater Hoses Part Numbers

You might need to recheck the part numbers.




.

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1983 123.133 California
- GreaseCar Veg System

Just heater hose from a parts store, 5/8 or 3/4, I think. In my old w123 I used it for several years. If it forms a kink, make a longer loop to form the bend, or just use the old hose unless it's cracking or leaking.

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CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?

if you're sure on the part #, try contacting Mercedes classic center in SoCal.

they have found several parts for me that the dealer claimed NLA, or just couldn't find in their system.

talk to Charles, he knows how to find stuff.

not the best place as far as answering the phone so you may have to try a few times.

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1983 300CD Turbodiesel

If you have an O'reilly auto parts store, they carry Gates hoses. Gates is about as good as it gets in terms of quality and fit. Ask the parts counter people if they would allow you to go back to where they keep the hoses. Take the hose off your car and that way you can match it up easier while in the store.

If I have a choice, Gates rubber hoses are the ONLY way to go.

When I searched the part number A123 832 8994 on ebay but without the "A" in the part number there is a ebay seller that said he has 10 of them NEW MERCEDES GENUINE 240E 280CE 280E 300CD 300D 300TD HVAC Heater Hose Present price $14.16 with free shipping.

But that hose is not S shaped. Most parts places don't use the letter in front of the Mercedes part number.

The shape of the hose does seem to be a difficult one to match up with some generic hose. On ebay you can also view generic silicon hoses that are in various shapes. Silicon is more flexible and I am guessing is not going to rot with age like the rubber ones.

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84 300D, 82 Volvo 244Gl Diesel

Oops, I miss read the part numbers. 123 832 8994 is indeed a part number on one of the "x"ed out hoses. One the link I provided, it is marked #3 in the picture.

It looks like it is available here.
https://www.genuinemercedesparts.com/oem-parts/mercedes-benz-hose-heat-amp-vent-s-1238328994

You could also call the Classic center.
.

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1983 123.133 California
- GreaseCar Veg System

Pull the existing hose off and take it to the parts counter at your local store. I've done this many times with custom hoses or projects and have always returned with something that works.

Dkr.

That is a plumbing confusion with the "1 in, 2 out" (or vice-versa) Behr heater core. I haven't replaced those hoses yet, but did on the front side w/ 5/8" silicone hose. I have a kit of silicone hoses for a motorcycle (ebay cheap) with many turns. I used on several cars (PCV, etc), but none fit the M-B. One trick many hot rodders use is to cut a hose and add a metal splice so they can rotate to get the correct elbow angles. This is mainly w/ 1.5" upper radiator hoses (they love the Ford F-150 hose, cheap w/ many bends). Perhaps the same could be done for heater hoses. This is thinking ahead to when these hoses truly are "not avail".

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans