Hey everyone, need some help....

I recently purchased Eibach springs for my FD3S.
The springs I purchased have part # 5525.001
and 5525.001. I went on Eibach website
and part # for Eibach springs for FD3S is
5525.140.

Does anyone know what 5525.001 and 5525.002
is for and what it means??

What does the (.001, .002) signify?? or anything at all?
does itmean spring rate or something???? Differnt Lowering height??

Some one help
Thank..

 

BTW i call yesterday evening and were closed
and this morning its to early, not open.