Connect a related record via Workflow

Hi,

quite simple question.

I have Module A and Module B.

In Module A there is a new record created by incoming Mails. Some Values of the Record are set by the Subject of the Mail via Workflow.

In This context i'd like to relate/connect that record to another record in a different Module (B) depending on the specific Value in Subject.

For e.g.

Subject is: "Car Type 123 is having a Problem"

So depending on that

Field 1 - Product "Car"
Field 2 - Type "123"
Field 3 - Problem

Field 4 - State "Open"

are getting a specific value - that works totally fine.

But the missing part is a relationship to the Module B and the record there.

Like - action -> link record to related Module B and record "Failure Type 098"

I hope it's clear what i'm looking for.

 Thanks!