Do I have the correct MAS part on my 1991 300CE?

[StephFR]

Still tracking some issues with my car... and now I'm pointing on the MAS.

The current installed on the car has the following #: 011 545 83 32, while it looks like most of the online reseller call for # 012 545 48 32.

Do I have the correct one?

More about my car: 1991 300 CE (24 V), apparently a California model.

Thanks,

[deanyel]

Those two parts interchange with each other.

[StephFR]

Thanks!