Serial number positions for gearbox and diff

[rutger kohler]

Hi, I would like to note the serial  number for the gearbox and diff on my 280SL. Could someone plse direct me to a photo of both positions so I can check them.

[rutger kohler]

I've had a lot of members look at this but no replies, perhaps I have not been clear enough so here is another attempt!  As I understand it each gearbox and differential housing has a unique serial number, just like the engine. I have a small owners parts book which shows the approximate position of the serial number' on the gearbox bell housing, and the diff housing' but when I look on my car, I can't see them.  I am hoping someone else has taken a phot uder their car, of their serial numbers so that I can see where they are.  Hope this clears my request up.

[Larry & Norma]

Auto or manual?

[Garry]

Rutger,

I am not sure but think that the number is stamped on the dif near where the ratio number is also stamped on the left bottom rib.

http://www.sl113.org/forums/index.php?action=dlattach;topic=13717.0;attach=8664;image

[twistedtree]

This should help.  The lower number is the gear ration, and the upper number is the SN.  This is an early 230, and I can't say whether the numbers have moved in later models.

As for the transmission, on an automatic there is a tag on the lower left side of the gear case, just above the oil pan.  I'm not sure about 4 speeds.

[Naj ✝︎]

Hi, Rutger,

Garry is right, on the 280 SL the serial # precedes the diff ratio on the lowest left rib of the casing.

On the 230s, its on the back housing as indicated by twistedtree.

I don't know where the serial # is stamped on a manual box but I believe there is a plate riveted on the rectangular block in the picture on the auto.

Naj

[rutger kohler]

thanks guys, that's sorted the diff, the gearbox is 4 speed manual.