barcheta

So I went to my local MB dealer today to get a new plug cause the one i currently have is stripped and I want to have a new one on hand before I destroy the old one getting it out.

Parts guy who was real helpful prints me out the part diagram and brings me two drain plug plus the sealing washers.

Problem is the new plugs look nothing like the old plug thats in the pan now. As a comparison he also brought over a new pan which oddly enough also has the plug already screwed in. The plug I need not the one they tried to sell me. He looked up the part and told me thats the one that listed. I did a side by side comparison and decided no way that could be correct.

The oem plug is black, uses what looks like a torx30 fitting, and has a head that is about 3/4 of an inch in diameter. The one he tried to sell me uses an allen fitting, is silver, and has a head about 1/2 inch in diameter.

Does anyone have the proper part number or know where to get a tranny drain plug for a 2006 E350 4-matic? I'd like to get two.

Thanks

lkchris

I believe you have the 7-speed transmission.

Do you know how to fill it after you drain it?

Do you have the special tool required to fill it via the drain plug hole ... because that's the only way?

barcheta

Nope I have a 5 speed auto. Its a 4matic. All 4matics were 5 speeds in 06. 722.6

vettdvr

What you have in your 5 speed auto is the same as mine and it is a PITA.

First time I tried to remove mine it stripped so I pulled the pan. I don't drain anyway for routine service. You can use a topside extractor if you just want to drain the pan. Then refill with fresh fluid for a partial no filter change. I pulled my pan and changed oil and filter at 85,000. Now at 117,000 I am thinking about doing a topside to do just a pan change out. I know everyone harps about flushing etc. But I have been doing this type of service for the last 40 yrs on auto transmissions and never had a failure. Doesn't mean it won't happen but I am 100% for it working for me.

barcheta

Yeah that's what I ended up doing also. It is a PITA. I have 105500 on mine now. I drained about 5 quarts out as I let it sit overnight. It does seem to shift better now. Interesting that the replacement plug looks nothing like the oem one or even the one that comes with the pan.

starbrite

Part #'s @ e350 4matic, PN changed 3 times since you bought the car

Original: N00098010002

Current:
screw= N000000000884
seal = A1402710060

barcheta

Hey thanks starbrite any chance you might know the dimensions of this new screw?

starbrite

This is the info from MB EPC : M10X1MM

barcheta

I think that may be the one the parts guy pulled for me.

MBtech1098

On the 722.6 trans, the drain plug has always been an allen. Size of the allen is either 5 or 6 mm. It is a fine thread 10x1.0 mm. The head is about 3/4". The drain plug he gave you sounds as if it was for a 722.9. Keep in mind that if the head of drain plug is Torx, then it is not factory.

desired_speeds

yea, its a 5mm allen from factory on the black bolt. The updated bolt is silver and just as you described it. It is a replacement bolt and is the correct one which works without any issues. It is not a torx! Using a torx is how you strip it.

barcheta

Excellent responses guys. Thanks. I believe you're correct about how I stripped the screw. Looks like I will be going back and picking up the silver screw. Looks like I'll need an extractor to get the old screw out.

starbrite

BTW, just for reference, the pn for the 722.9 (7 spd) is N000908012009

Vai2kdna77

I did my pan flush and filter and gasket this past weekend. To start-when I tried to unscrew the drain plug, the tool snapped off inside the darn hole! I had to drop the pan to drain it, and could not get the drain plug/ bolt to come out. Is this a lefty loosey/ righty tighty type bolt? I got the new filter, gasket and fluid back in there just fine. Took about 4 quarts of fluid for that. Is there any way to get that bolt out of there and replace it? Do I just need to pick at it until it has cleared out? The part that broke off into the allen head drain bolt is now flush, and I did not want to drill it out in an effort to not compromise the pan. Any ideas? What is the replacement drain plug part #? I have a 2003 e320 w211. I think the transmission is a 5 speed 722.6. Please advise! THANK YOU AS ALWAYS!! YOU GUYS ARE AWESOME!

kajtek1

The drain plug on those transmissions have no real life use.
Cheap mechanics use it for speedy bucks making, but the plug sits on elevated flange, so it will leave some fluid with the dirt sitting in the pan.
For real service you need to drop the pan and wipe the bottom clean. Newer pans also do have magnet to clean.
Dropping the pan full of oil makes some splash, so have big catching pan and line the floor with plastic.
Other than that - not a big deal to leave the plug untouched.

Vai2kdna77

Sounds good, other than me making a little mess on the garage floor! Thank you!