My 1992 190E with a 2.6 has a faulty MAS RELAY part # 011 545 79 32. I ordered a used MAS RELAY having the same part # via eBay Motors. However, I've received a similar looking MAS RELAY but with a different part # of 007 545 65 32. I'm reluctant to install the ordered relay which has a different part #. I'm respectively requesting some wisdom of the 2 above part numbers. Are they interchangeable with one another? What are the difference of the two?