Intake manifold gasket - PeachParts Mercedes-Benz Forum

DieselUte · #1 10-12-2021, 11:46 PM

I was shocked to see that the gasket between the throttle housing and intake manifold for my '83 240D is $77 from the dealer, that seems out of proportion to me even for parts from the dealer. Could I possibly have the wrong part number (101 in the diagram below)? The number I am using is:

Gasket, Intke Mnfld, Asbsts - Mercedes-Benz (616-141-00-80)

Is this something different than I think it is? Or does it include more than the gasket? Does anyone know what Asbsts stands for? The first thing that comes to mind for me is asbestos. Could that be the reason for the high price?

Given it is an air intake gasket (rather than a wet fluid connection), would I be safe to make my own gasket?

Alec300SD · #2 10-13-2021, 01:09 AM

From your description, I think you might be asking about item 10 (636-074-02-80) in the link below:
https://www.ilcats.ru/mercedes/?function=getParts&class=1&catalog=004&aggtype=M&model=616912&group=14&subgroup=082261&stroke=01&sasubgroup=001&language=en

It is a discontinued product, per the online MB dealership parts department I checked.
It appears to be a paper gasket, so you could fashion one from a sheet of paper gasket material.

Did find one NOS for $8 here:

W136

Alec300SD · #3 10-13-2021, 02:29 AM

Did a little more research and found that the gasket (616-141-00-80), item 101, lists for $77 and the asbts descriptor probably is an abbreviation for asbestos.
If the gasket needs to shield the throttle housing from extereme temperatures then the OEM asbestos gasket is the way to go.

I did find it online for $55.20 here.

The link below has the diagram and the key to the item numbers in the diagram.
Mercedes-Benz EPC. OM 616.912 M - Engine, DIESEL ENGINE 48 KW (65 PS/DIN), UP TO END OF MODEL YEAR '80 DIESEL ENGINE 48 KW (65 PS), MODEL YEAR 81 FROM ENGINE 912 10 176207 UP TO ENGINE 236215 AS WELL AS 167207-167211,168491-168500,168525,168525,16852

DieselUte · #4 10-13-2021, 02:53 AM

Thanks for your research and for the information Alec300SD. You mentioned a possible need for heat shielding, that may be the reason for the high price. Thanks for finding it with the $20 discount though, that would definitely help.

I did find the old gasket intact (see picture), and I'm used to replacing all gaskets as I go since I'm fixing the car up mechanically. I'm also used to gaskets being relatively low price. I wonder if I could keep using the old one this time. Could I check that the old one is functioning properly by spraying ether around the throttle body and watching for a response? And by checking how hot the throttle body gets during use?

Alec300SD · #5 10-13-2021, 11:09 AM

It looks to be reusable.

I personally wouldn't use any volatile compounds.

hercules · #6 10-14-2021, 10:47 PM

Nothing special about that gasket. Not a high heat area. I always used silicone sealer
around the out side edges,never a problem.
Note: the air fins,on the bottom were for swirl for better mixing of exhaust gases.

BillGrissom · #7 10-16-2021, 10:30 PM

If truly asbestos, I would clean it up and re-use it if it looks solid, since the only thing that might degrade asbestos is mechanical degradation. I'm surprised to learn that a 1983 diesel engine even has a throttle plate. What is its purpose and does it even fully close? Unlikely since that would starve the engine of air. It isn't like a vacuum leak in a gas engine since the rpm is still controlled by fuel from the injection pump. Seems the only risk from a leak would be in bypassing the air filter, and unlikely any significant dirt could get past the gasket anyway.