Many moons ago - about a year after I bought my Volvo, I had some difficulty that prompted me to take my Swedish-Steam-Roller to a mechanic. Among other things, the "mechanic" informed me that I needed a "new" Ignition control Unit. Previous to this, I believe that the ICU I had was a 1317873. At the time, I had virtually no experience with anything automotive beyond changing oil and filling up the gas. I examined my records from the period, and find nothing exact concerning the ICU that was in my car before the "mechanics" got a hold of it. The "replaced" ICU appears to be still working just fine, but when I picked up my car all those many years ago, the ICU looked exactly the same as the "old" one except that the blue number label was missing. I was told that it was a "new" used part. Although I couldn't prove it at the time, I suspected that they just removed the blue label and left my old ICU in place and charged me for a replacement. Like I said, I knew nothing about the fact that many mechanics simply belong in jail. I was wide-eyed and naive, and probably had a neon sign flashing above my head that read, "SUCKER". I now find that I have become somewhat obsessed with finding out what the number of my ICU is. Does anyone know of another way to identify what ICU I might have other than by the missing label? The illustration describes my car.