Gearbox identification

[PhilC]

What do these numbers mean please?

It's mated to my M42.

[tzei]

Getrag 240. Factory casting numbers - nobody knows what they’ll mean. Well maybe someone does but it’s nothing usefull info.

[jgerock]

IF the Getrag was originally mated to an e30, it might still have the car’s VIN sticker located on the left side of the bellhousing.  The number stamped into the Bellhousing flange is the best identifier. See attached from my previous 91 318is.

 

 

Edited March 28 by jgerock
Added chart from E30 book

[TobyB]

Those numbers identify the raw casting that was used to make the part on your gearbox.

 

Nothing more, nothing less.  That '240' means that the casting was probably originally designed to be a part

of the 240 series gearbox, but subsequent machining processes can make it fit other transmissions.

You will also find a 240 casting (or sometimes a 232) on the back of a 245, for example.

 

t

 

Edited March 28 by TobyB

[2002iii]

1 hour ago, TobyB said:

Those numbers identify the raw casting that was used to make the part on your gearbox.

 

Nothing more, nothing less.  That '240' means that the casting was probably originally designed to be a part

of the 240 series gearbox, but subsequent machining processes can make it fit other transmissions.

You will also find a 240 casting (or sometimes a 232) on the back of a 245, for example.

 

t

 

I believe the 245 uses a 242 or 232 casting. The 240 came after the 245 was phased out.