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Old 09-02-2010, 10:13 PM
Registered User
Join Date: Jan 2009
Location: Manchester,NH
Posts: 392
Steering gear box question

I need a new steering gear box, and I was wondering if a W126 gear box is the same as a W123 gear box. I have a 300D, and wanted to put in a w126 gear box and wanted to know it will fit.

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Old 09-02-2010, 10:23 PM
vstech's Avatar
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,389
I was wondering the same thing. they LOOK very similar, but if you have a parts car and the inclination, pull yours and see. let us know.
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Old 09-03-2010, 12:09 AM
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Join Date: Jan 2009
Location: Manchester,NH
Posts: 392
Yes they look very similar. I am going to a yard tomorrow and will probably pull a w126 gear and see what happens.
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Old 09-03-2010, 02:19 AM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Seems like this was discussed before, and I think the consences was, they won`t swap.

Hope Iam wrong, as I see some low milage 126`s come into the yards.

there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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Old 09-03-2010, 06:04 AM
t walgamuth's Avatar
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 36,293
I don't know the answer. but are you sure you need a different box? They last a really long time. My dd has well over 300K on it and the steering is nice and tight. The correct direction to tighten the box is anticlockwise.
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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Old 09-03-2010, 09:14 AM
Registered User
Join Date: Jan 2009
Location: Manchester,NH
Posts: 392
Yes I need a new box. When i bought the car it had a little play in the steering. All suspension parts are tight and the adjustment was maxed out on the box. So i threw in a gear box out of a 240D, but now it turns really hard to the left and the steering just does not feel right. There is a yard here in NH where they have 7 or 8 w123s but they have been there forever and they all junked, but he also has some newer 126s and i was hoping to get a gear out of one of those.

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